Evolutionary classification of protein domain structures

alpha arraysalpha-helix arrays with mainly perpendicular helices

alpha bundlesalpha-helix bundles with mainly parallel helices

alpha superhelicesrepeating alpha-helix hairpins form a superhelix

alpha duplicates or obligate multimersalpha duplicates or monomers associate together to form a compact domain

alpha complex topologyalpha domain with complex and unique topology that cannot be described as array or bundle or superhelix

beta barrelssingle beta-sheet folded upon itself to form a barrel

X: cradle loop barrel

Refs: Structure 14, 1489-1498; Current opinion in structural biology 18, 358-365

H: RIFT-related

T: acid protease

126354, 3-crossover-4

T: double psi

152436, 2-crossover-3, 5-crossover-6

T: AbrB

122'1'344'3', 2-crossover-3, 2'-crossover-3'

T: Bacterial fluorinating enzyme-C

1265437, 2-crossover-3, 6-crossover-7

T: FMN-binding split barrel 2

T: FMN-binding split barrel

123654, 3-crossover-4

F: SecD_1st,SecDF_P1_head

PF21760 PF22599

F: MreC

PF04085

F: Peptidase_S39

PF02122 CL0124

F: Putative_PNPOx,PNP_phzG_C

F: MrkH_YcgR_like

F: F420H2_quin_red

F: Peptidase_C30

Representatives:

e2ducA2[A:1-186] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Replicase polyprotein 1ab ; X-RAY DIFFRACTION 1.7Å

e7s3sA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 860 ; X-RAY DIFFRACTION 2.0Å

e7s4bA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 87H ; X-RAY DIFFRACTION 2.00Å

e7d64A1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: ZN ; X-RAY DIFFRACTION 2.45Å

e7dqzA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.99Å

e7dqzB1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.99Å

e7rbzA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4IJ ; X-RAY DIFFRACTION 1.649Å

e7rc0A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4I9 ; X-RAY DIFFRACTION 1.646Å

e7rc1A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4IO,DMS ; X-RAY DIFFRACTION 1.63Å

e7d3cB1[B:1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.2Å

e7d3cA1[A:1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.2Å

e7datA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

COVID-19 MAIN PROTEASE ; ligands: AU ; X-RAY DIFFRACTION 2.75Å

e7dauA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

COVID-19 MAIN PROTEASE ; ligands: AU ; X-RAY DIFFRACTION 1.72Å

e7davA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

COVID-19 MAIN PROTEASE ; X-RAY DIFFRACTION 1.77Å

e7ddcA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H3F ; X-RAY DIFFRACTION 2.175Å

e7dg6A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

Replicase polyprotein 1ab ; X-RAY DIFFRACTION 2.4Å

e7dgbA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: EOF ; X-RAY DIFFRACTION 1.678Å

e7dgfA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H60 ; X-RAY DIFFRACTION 1.639Å

e7dggA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H63 ; X-RAY DIFFRACTION 2Å

e7dggB1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H63 ; X-RAY DIFFRACTION 2Å

e7dghA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H6F ; X-RAY DIFFRACTION 1.968Å

e7dgiA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H6L ; X-RAY DIFFRACTION 1.8980Å

e7dgiB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H6L ; X-RAY DIFFRACTION 1.8980Å

e7dhjA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H6R ; X-RAY DIFFRACTION 1.96Å

e7dr8A1[A:2-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.33814917992Å

e7dr8B1[B:2-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.33814917992Å

e7dr9A1[A:3-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.77587097342Å

e7dr9B1[B:4-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.77587097342Å

e7draA1[A:3-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.78Å

e7draB1[B:4-189] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.78Å

e7e6lA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.78Å

e7e6lB1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.78Å

e7e6mA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.83Å

e7e6mB1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.83Å

e7e6nA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.84Å

e7e6nB1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.84Å

e7e6rA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.90Å

e7e6rB1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.90Å

e7eo7A1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.24916621935Å

e7eo7B1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FNO ; X-RAY DIFFRACTION 2.24916621935Å

e7eo8A1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FNO ; X-RAY DIFFRACTION 2.28Å

e7eo8B1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.28Å

e7jp0A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; ligands: DMS,VJA ; X-RAY DIFFRACTION 1.65Å

e7ltnA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: YCV ; X-RAY DIFFRACTION 1.787Å

e7mlfA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: C7A ; X-RAY DIFFRACTION 2.6Å

e7mlgA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: ZJ1 ; X-RAY DIFFRACTION 2.5Å

e7ntsA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Replicase polyprotein 1ab ; ligands: DMS,FMT,GOL ; X-RAY DIFFRACTION 1.477Å

e7p51A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5P9,DMS,NA ; X-RAY DIFFRACTION 1.47Å

e7rfrA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4W8 ; X-RAY DIFFRACTION 1.626Å

e7rfrB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4W8 ; X-RAY DIFFRACTION 1.626Å

e7rfsA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 1.91Å

e7rfuA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4YG ; X-RAY DIFFRACTION 2.50Å

e7rfwA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 1.729Å

e7rlsA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5YN ; X-RAY DIFFRACTION 2.00Å

e7rm2A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5YJ ; X-RAY DIFFRACTION 2.00Å

e7rmbA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5Z7 ; X-RAY DIFFRACTION 1.9Å

e7rmeA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5Z3 ; X-RAY DIFFRACTION 2.00Å

e7rmtA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5ZN ; X-RAY DIFFRACTION 2.00Å

e7rmzA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5ZJ ; X-RAY DIFFRACTION 2.1Å

e7rn4A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: H69 ; X-RAY DIFFRACTION 1.85Å

e7rnhA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5ZW ; X-RAY DIFFRACTION 2.0Å

e7rnkA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 5ZT ; X-RAY DIFFRACTION 2.10Å

e7si9A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 2.00Å

e7t3yA1[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: F5L,F8C ; X-RAY DIFFRACTION 1.900Å

e7t3yB1[B:-2-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: F5L,F8C ; X-RAY DIFFRACTION 1.900Å

e7t3zA1[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FEY,FHS ; X-RAY DIFFRACTION 1.950Å

e7t3zB1[B:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FEY,FHS ; X-RAY DIFFRACTION 1.950Å

e7t40A1[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FV5,FVE,PG4 ; X-RAY DIFFRACTION 1.700Å

e7t41A1[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FWI,FZI ; X-RAY DIFFRACTION 2.100Å

e7t42A1[A:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FIK,FIW ; X-RAY DIFFRACTION 1.600Å

e7t42B1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FIK,FIW,PG4 ; X-RAY DIFFRACTION 1.600Å

e7t43A1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FN2,FP8 ; X-RAY DIFFRACTION 1.700Å

e7t43B1[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FN2,FP8 ; X-RAY DIFFRACTION 1.700Å

e7t44A1[A:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: ESS,ET6 ; X-RAY DIFFRACTION 1.450Å

e7t44B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: ESS,ET6 ; X-RAY DIFFRACTION 1.450Å

e7t45A1[A:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: EW9 ; X-RAY DIFFRACTION 1.650Å

e7t45B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: EW9,PG4 ; X-RAY DIFFRACTION 1.650Å

e7t46A1[A:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: F5L,F8C ; X-RAY DIFFRACTION 1.450Å

e7t46B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: F5L,F8C ; X-RAY DIFFRACTION 1.450Å

e7t48A1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FEY,FHS ; X-RAY DIFFRACTION 1.900Å

e7t49A1[A:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FV5,FVE ; X-RAY DIFFRACTION 1.750Å

e7t49B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FV5,FVE ; X-RAY DIFFRACTION 1.750Å

e7t4aA1[A:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: EO6,EQS ; X-RAY DIFFRACTION 1.800Å

e7t4aB1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: EO6,EQS,PG4,PO4 ; X-RAY DIFFRACTION 1.800Å

e7t4bA1[A:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FWI,FZI ; X-RAY DIFFRACTION 1.600Å

e7t4bB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: FWI,FZI,PG4 ; X-RAY DIFFRACTION 1.600Å

e7vh8A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI,H2S ; X-RAY DIFFRACTION 1.590Å

e7tobA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: K36,PEG ; X-RAY DIFFRACTION 2.050Å

e7dvpA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.690Å

e7te0A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 2.00Å

e7nwxA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Replicase polyprotein 1a ; ligands: ZN ; X-RAY DIFFRACTION 1.80Å

e7vjwA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vjxA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vk0A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk3A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk4A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk5A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk6A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vk7A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7dvwA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: DMS ; X-RAY DIFFRACTION 1.490Å

e7dvxA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.7970Å

e7dvyA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.7950Å

e7dw0A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.810Å

e7dw6A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.6950Å

e7nxhA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.10Å

e7vjyA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.700Å

e7vjzA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.900Å

e7vk1A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.600Å

e7vk2A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.000Å

e7vk8A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.400Å

e7tllA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 1.63Å

e7tllB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 1.63Å

e7vjwB1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vjxB2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vk0B2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk3B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk4B2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk5B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.100Å

e7vk6B2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7vk7B1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.200Å

e7rnwB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.350Å

e7s82A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; ELECTRON MICROSCOPY

e7au4A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,RY5 ; X-RAY DIFFRACTION 1.820Å

e7u29A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 2.09Å

e7e5xA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.190Å

e7tvsA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase nsp5 ; ligands: DMS,XNJ ; X-RAY DIFFRACTION 1.88Å

e7tq6B2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: IT3,ITG,PG4 ; X-RAY DIFFRACTION 1.550Å

e7vtcB1[B:1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.53865625155Å

e7tq7A1[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Orf1a protein ; ligands: IRR,PG4 ; X-RAY DIFFRACTION 1.700Å

e7tq8A2[A:-1-189] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Orf1a protein ; ligands: IRK,IUB,PG4 ; X-RAY DIFFRACTION 1.650Å

e7s82B2[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; ELECTRON MICROSCOPY

e8dg3A1[A:0-186] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: 4WI

e8dg3B2[B:0-186] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: 4WI

e7mb5B1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.60Å

e7mb6B1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.21Å

e7mb7A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.02Å

e7mb8D2[D:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.62Å

e7mb9A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.81Å

e7t2uA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-Like Protease ; X-RAY DIFFRACTION 2.100Å

e7t2uD2[D:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-Like Protease ; X-RAY DIFFRACTION 2.100Å

e7t2vA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-Like Protease ; X-RAY DIFFRACTION 2.470Å

e7t2vD2[D:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-Like Protease ; X-RAY DIFFRACTION 2.470Å

e7t9yA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: GOL ; X-RAY DIFFRACTION 2.18Å

e7ta4A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 1.78Å

e7nijA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 1.580Å

e7tq5A1[A:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: IRW,ITX ; X-RAY DIFFRACTION 1.650Å

e7vfaE1[E:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: SO4 ; X-RAY DIFFRACTION 1.75Å

e7vloB2[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 2.02Å

e7vvtA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 80X ; X-RAY DIFFRACTION 2.500Å

e8doyA1[A:0-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 1PE,DMS,MES,PG0,T1X ; X-RAY DIFFRACTION 1.59Å

e8doyB2[B:0-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,PG0,T1X ; X-RAY DIFFRACTION 1.59Å

e8e61B2[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; ligands: CL,VLU,VM0 ; X-RAY DIFFRACTION 1.850Å

e8e64A2[A:4-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; ligands: WEL ; X-RAY DIFFRACTION 1.750Å

e7v7mA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; X-RAY DIFFRACTION 2.08Å

e7wypA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: G7O ; X-RAY DIFFRACTION 2.30Å

e7vlqB1[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4WI ; X-RAY DIFFRACTION 1.93910601486Å

e8czwB2[B:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: P8L,P8U ; X-RAY DIFFRACTION 1.700Å

e8e68B2[B:3-186] Image Pymol Jmol Links: PDB, SCOP, CATH DOI

3C-like proteinase ; ligands: PG4,WGO,WGU ; X-RAY DIFFRACTION 1.600Å

e7qbbA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,V1B ; X-RAY DIFFRACTION 2.000Å

e7qt6A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,RZJ ; X-RAY DIFFRACTION 2.11Å

e7qt7A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,UHV ; X-RAY DIFFRACTION 2.25Å

e7qt9A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Non-structural protein 6 ; ligands: DMS,UJ1 ; X-RAY DIFFRACTION 2.43Å

e7rnwC2[C:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; X-RAY DIFFRACTION 2.350Å

e7tgrA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: B1S,CL,K36,NA ; X-RAY DIFFRACTION 1.680Å

e7vlpA2[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Replicase polyprotein 1a ; ligands: 4WI ; X-RAY DIFFRACTION 1.50Å

e7z0pAAA2[AAA:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: I8H,NA ; X-RAY DIFFRACTION 2.52Å

e8d4nA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 2.70Å

e8dd9A2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: B1S ; X-RAY DIFFRACTION 2.04Å

e7b2jA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,PEG,SQ2 ; X-RAY DIFFRACTION 1.55Å

e7b2uA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,SQ5 ; X-RAY DIFFRACTION 1.55Å

e7b2uB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,SQ5 ; X-RAY DIFFRACTION 1.55Å

e7b5zA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,SYH ; X-RAY DIFFRACTION 1.65Å

e7b77A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,T0W ; X-RAY DIFFRACTION 1.60Å

e7bijAAA1[AAA:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,TU8 ; X-RAY DIFFRACTION 1.47Å

e7e6kA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; ligands: DMS,HYR,SO4 ; X-RAY DIFFRACTION 1.600Å

e7nbtAAA2[AAA:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,U7W ; X-RAY DIFFRACTION 1.63Å

e7neoAAA1[AAA:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,U9H ; X-RAY DIFFRACTION 1.64Å

e7neoBBB1[BBB:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,U9H ; X-RAY DIFFRACTION 1.64Å

e7ntqA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 35J,DMS,FMT,NA ; X-RAY DIFFRACTION 1.49Å

e7ntwA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

3C-like proteinase ; ligands: DMS,FMT,NA,ZN ; X-RAY DIFFRACTION 1.815Å

e7p2gA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: 4N0 ; X-RAY DIFFRACTION 2.5Å

e7qt5A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: DMS,GWS ; X-RAY DIFFRACTION 2.26Å

e7qt8A1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: R8H ; X-RAY DIFFRACTION 2.01Å

e7qt8B1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase ; ligands: R8H ; X-RAY DIFFRACTION 2.01Å

e7u29B1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 2.09Å

e8d4jB2[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 1.78Å

e8d4kA1[A:2-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: K36 ; X-RAY DIFFRACTION 1.89Å

e8d4lA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 1.70Å

e8d4lB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 1.70Å

e8d4mA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: K36 ; X-RAY DIFFRACTION 1.81Å

e8d4nB2[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 2.70Å

e8dczA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 2.38Å

e8dczB2[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 2.38Å

e8ddmA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: K36 ; X-RAY DIFFRACTION 2.78Å

e8dfnA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; X-RAY DIFFRACTION 2.04Å

e8dgbA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: B1S ; X-RAY DIFFRACTION 2.87Å

e8dgbB2[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: B1S ; X-RAY DIFFRACTION 2.87Å

e8dz9D2[D:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

3C-like proteinase nsp5 ; ligands: 4WI ; X-RAY DIFFRACTION 1.66Å

e7pflA1[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

Replicase polyprotein 1ab ; ligands: NA ; X-RAY DIFFRACTION 1.800Å

e7pfmA2[A:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

Replicase polyprotein 1ab ; ligands: 7IL ; X-RAY DIFFRACTION 2.000Å

e7pfmB1[B:1-186] Image Pymol Jmol Links: PDB, SCOP, CATH

Replicase polyprotein 1ab ; ligands: 7IL ; X-RAY DIFFRACTION 2.000Å

Previous Next

F: Peptidase_S6

F: PilZ-like

F: Peptidase_S29

F: PilZN1

F: Peptidase_C37

F: Peptidase_S7

F: Trypsin

F: PilZ

F: Peptidase_S3

F: TssD

F: Peptidase_C4

F: Trypsin_2

F: Pyrid_oxidase_2

F: Peptidase_S7,Flavi_NS2B

F: SecDF_P1_head

F: Putative_PNPOx

F: Peptidase_S31

F: PilZNR

F: Trypsin,Thrombin_light

F: Pyrid_ox_like

F: Flavin_Reduct

F: Pyridox_oxase_2

F: Phage_T4_gp19

F: Pyridox_ox_2

F: Peptidase_S46

F: Peptidase_S32

F: FMN_bind_2

F: DUF447_N

F: Pico_P2A

F: Putative_PNPOx_2

F: tPilZ

F: YwpF

F: IglC

F: Thrombin_light

F: PilZN

F: T6SS_HCP

F: UbiD

F: Peptidase_C107

F: Unmapped domains

Pseudo group of domains that do not map to PFam family profiles. Domains inside should not be considered as in one family.

T: Surface presentation of antigens (SPOA)

123654, 3-crossover-4, swapping

T: Alanine racemase-C

125436, 2-crossover-3, 5-crossover-6

T: Aminomethyltransferase beta-barrel domain

143256, 1-crossover-2, 4-crossover-5

T: PUA domain

12543, 2-crossover-3

T: Type II restriction endonuclease effector domain

T: barrel domain in QueA-like proteins

T: Phage tail proteins

T: PTS system glucitol/sorbitol-specific IIA component-like

T: PK beta-barrel domain-like

T: Mammalian cell entry (MCE) domain

H: Capsid protein protrusion (P) domain

H: N-terminal domain of poxin

H: DP2 DPBB-1 domain

H: HI0933 barrel domain-like

H: Photosystem II accessory factor Psb28

H: Putative lipoprotein BA_5634 insertion domain

H: Arginine N-succinyltransferase alpha chain C-terminal domain

H: Uncharacterized protein TM1086 C-terminal domain

H: Baseplate wedge protein gp7 domain V

H: Baseplate wedge protein gp6 domain I

H: VP5 C-terminal C2 domain

X: N-terminal domain of TAP-binding protein-related

X: P22 coat protein insertion domain

X: Catalytic domain of hepatitis C virus NS2-3 protease

X: N-terminal domain of minor coat protein pIII

X: uncharacterized protein RUMGNA_01417

X: Ribosomal protein L21p

X: Ribosomal protein L25-like

X: Uncharacterized protein from gene locus rrnAC0354

X: Replication foci-targeting sequence N-terminal domain

X: Protein CLP1 C-terminal domain

X: Glycoside hydrolase family 127 C-terminal domain

X: EV matrix protein

X: LigT-like

X: Urease metallochperone UreE-N

X: Target recognition domain of zoocin A

X: Polymyxin B resistance protein

X: Cuben fold of PcncAAAD

X: OB-fold

X: GroES-like

X: Uncharacterized protein Dsy0195

X: SH3

X: IL8-related

X: UL131A-like

X: UL128 C-terminal domain

X: Cell division protein ZapC N-terminal domain

X: hypothetical protein TTMA177

X: Hantavirus structural glycoprotein Gn ectodomain subdomain III

X: MutM N-terminal domain-like

X: Ribosomal protein L14-like

X: YopX, C-terminal domain-like

X: VC0467-like

X: MMP1218-like

X: MFPT repeat

X: Barrel domain in upper collar protein

X: barrel domain in putative modulator of DNA gyrase, PmbA/TldD

X: beta-barrel domain in acetyl-CoA synthetase-like proteins

X: FimD N-terminal domain-like

X: Micronemal adhesive repeat

X: Coronavirus NSP8-like

X: PDZ domain

X: all-beta domain in DNA topoisomerase IV alpha subunit

X: hypothetical protein PA3229

X: beta-clip

X: Cyclophilin-like

X: SPOC domain-like

X: Herpes virus serine proteinase, assemblin

X: Oncogene product-like

X: Mannose 6-phosphate receptor domain

X: FMT C-terminal domain-like

X: Sortase

X: XRCC4, N-terminal domain-like

X: Virulence associated protein B (Vapb)

X: BH3618-like

X: GspC HR domain/PilP-like

X: CRISPR-Cas effector Cas13d N-terminal domain

X: Lipocalins/Streptavidin

X: YmcC-like

X: Lysosome membrane protein 2 lumenal domain

X: Handle domain in transferrin-binding protein B

X: Rubella virus capsid protein C-terminal domain

X: Single-stranded DNA-binding protein DdrB

X: Allergen Alt a 1

X: FomD-like

X: Outer membrane meander beta-barrels

X: secretin domain

X: Factor H-binding protein (fHbp) N-terminal beta-barrel domain

X: STT3/PglB/AglB beta-barrel domain

X: Acetoacetate decarboxylase-like

X: AttH-like

X: Barrel domain in heme-dependent catalases

X: WWE domain

X: GFP-like

X: Transcriptional factor tubby, C-terminal domain

X: Oxysterol-binding protein

X: CBF-like

X: NifT/FixU

X: barrel domain in CV3147-like proteins

X: Pfam PF06938 (DUF1285)

X: PH domain-like

X: Internal protein I

X: LARA domain

X: Restriction endonuclease PabI

X: N-terminal domain in DUF2118 family

X: Pestivirus Npro endopeptidase C53

X: Repulsive guidance molecule (RGM) family

X: V1/V2 domain in HIV gp120

beta meanderssingle beta-sheet with mainly meander topology

beta sandwichestwo beta-sheets stacked together to form a sandwich

beta duplicates or obligate multimersbeta duplicates or monomers associate together to form a compact domain

beta complex topologybeta domains with complex and unique topology that cannot be described as barrel or sandwich or meander

a+b two layersone alpha-helix layer and one beta-sheet layer

a+b three layersone mainly antiparallel beta-sheet layer sandwiched between two alpha-helix layers

a+b four layerstwo beta-sheet layers sandwiched between two alpha-helix layers

a+b complex topologyalpha and beta domain with complex and unique topology that cannot be described in layers

a+b duplicates or obligate multimersalpha and beta duplicates or monomers associated together to form a compact domain

a/b barrelsrepeating beta-alpha units form a barrel

a/b three-layered sandwichesrepeating beta-alpha units form a sandwich with a mainly parallel beta-sheet layer stacked between two alpha-helix layers

mixed a+b and a/balpha and beta domain consists of both a+b and a/b regions

few secondary structure elementsstabilized by cofactors or disulfides

extended segmentsextended, non-globular segments, frequently bind to other proteins to form complexes

special