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
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




Representatives:
e2gg2A1[A:3-264]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U12 ; X-RAY DIFFRACTION 1.0Å
e1qxyA1[A:1-251]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
methionyl aminopeptidase ; ligands: ACT,CO,M2C ; X-RAY DIFFRACTION 1.04Å
e2v3zA1[A:177-440]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MN ; X-RAY DIFFRACTION 1.56Å
e1b6aA2[A:110-374,A:449-478]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,TN4 ; X-RAY DIFFRACTION 1.600Å
e1xgsA2[A:1-194,A:272-295]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 1.75Å
e1chmA1[A:157-402]
nonrep
Image
Pymol
Jmol Links:
PDB,
SCOP,
CATH, PubMed,
DOI
CREATINE AMIDINOHYDROLASE ; ligands: CMS ; X-RAY DIFFRACTION 1.9Å
e7ytoE2[E:159-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.31Å
e7ytoF2[F:159-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.31Å
e7ytoA1[A:158-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.31Å
e7ytoB1[B:158-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.31Å
e7ytoC2[C:159-404] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
; X-RAY DIFFRACTION 2.31Å
e5cdlA2[A:125-349] Image Pymol Jmol Links: PDB, SCOP, CATH
Proline dipeptidase ; ligands: MN,PO4 ; X-RAY DIFFRACTION 1.8Å
e5cdvA1[A:125-349] Image Pymol Jmol Links: PDB, SCOP, CATH
Proline dipeptidase ; ligands: MN,NA,PO4 ; X-RAY DIFFRACTION 1.45Å
e4zngC2[C:134-361] Image Pymol Jmol Links: PDB, SCOP, CATH
Prolidase ; ligands: MN ; X-RAY DIFFRACTION 2.25Å
e4zngB2[B:134-361] Image Pymol Jmol Links: PDB, SCOP, CATH
Prolidase ; ligands: CAC,GOL,MN ; X-RAY DIFFRACTION 2.25Å
e4zngA1[A:135-362] Image Pymol Jmol Links: PDB, SCOP, CATH
Prolidase ; ligands: CAC,GOL,MN ; X-RAY DIFFRACTION 2.25Å
e1kp0B1[B:157-401] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CREATINE AMIDINOHYDROLASE ; X-RAY DIFFRACTION 2.7Å
e1kp0A1[A:157-401] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CREATINE AMIDINOHYDROLASE ; X-RAY DIFFRACTION 2.7Å
e1chmB1[B:157-402] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
CREATINE AMIDINOHYDROLASE ; ligands: CMS ; X-RAY DIFFRACTION 1.9Å
e2p98A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,YE7 ; X-RAY DIFFRACTION 1.700Å
e2q93A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: B21,MN,NA ; X-RAY DIFFRACTION 1.6Å
e2gg0A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U11 ; X-RAY DIFFRACTION 1.28Å
e1c27A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,NLP ; X-RAY DIFFRACTION 1.95Å
e4matA1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (METHIONINE AMINOPEPTIDASE) ; ligands: NA ; X-RAY DIFFRACTION 2.0Å
e2gg8A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U15 ; X-RAY DIFFRACTION 1.8Å
e1c22A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,MF3,NA ; X-RAY DIFFRACTION 1.75Å
e2matA1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
PROTEIN (METHIONINE AMINOPEPTIDASE) ; ligands: CO,NA ; X-RAY DIFFRACTION 1.9Å
e2gg7A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U14 ; X-RAY DIFFRACTION 1.12Å
e1o0xA1[A:7-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; X-RAY DIFFRACTION 1.900Å
e2q96A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: A18,MN,NA ; X-RAY DIFFRACTION 1.6Å
e1yvmA1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CO,NA,TMG ; X-RAY DIFFRACTION 1.60Å
e2gg5A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CO,NA,U19 ; X-RAY DIFFRACTION 2.12Å
e2evcA1[A:5-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: FC3,MN,NA ; X-RAY DIFFRACTION 1.6Å
e2evmA1[A:5-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: FC2,MN,NA ; X-RAY DIFFRACTION 1.7Å
e2q94A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: A04,MN,NA ; X-RAY DIFFRACTION 1.63Å
e2gu7A1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA ; X-RAY DIFFRACTION 2.000Å
e2evoA1[A:5-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,CT0 ; X-RAY DIFFRACTION 1.7Å
e1c23A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,MPH,NA ; X-RAY DIFFRACTION 2.0Å
e2p9aA1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,YE6 ; X-RAY DIFFRACTION 1.600Å
e2q95A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: A05,MN,NA ; X-RAY DIFFRACTION 1.7Å
e1c21A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,MET,NA ; X-RAY DIFFRACTION 1.8Å
e2gg9A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U16 ; X-RAY DIFFRACTION 1.05Å
e2gtxA1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 2.000Å
e2gg3A1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA,U13 ; X-RAY DIFFRACTION 1.45Å
e2gu6B1[B:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.700Å
e2evoB1[B:5-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,CT0 ; X-RAY DIFFRACTION 1.7Å
e2gu5A1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.600Å
e2bb7A1[A:5-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: MN,NA,QMS ; X-RAY DIFFRACTION 1.7Å
e2ggbA1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CO,NA,U17 ; X-RAY DIFFRACTION 2.13Å
e1xnzA1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: FCD,MN,NA ; X-RAY DIFFRACTION 1.52Å
e2gtxB1[B:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 2.000Å
e1c24A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,MPJ,NA ; X-RAY DIFFRACTION 1.70Å
e3matA1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,NA ; X-RAY DIFFRACTION 2.1Å
e2gu4B1[B:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.800Å
e2p99A1[A:3-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,YE6 ; X-RAY DIFFRACTION 1.800Å
e3d27A1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,W29 ; X-RAY DIFFRACTION 2.200Å
e2q92A1[A:3-263] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: B23,MN,NA ; X-RAY DIFFRACTION 1.9Å
e1matA1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONYL AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION
e2ggcA1[A:3-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO,MET,NA ; X-RAY DIFFRACTION 1.0Å
e2gu4A1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.800Å
e2gu7B1[B:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA ; X-RAY DIFFRACTION 2.000Å
e2gu5B1[B:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.600Å
e2gu6A1[A:4-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,NLP ; X-RAY DIFFRACTION 1.700Å
e1qxzA1[A:1-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
methionyl aminopeptidase ; ligands: CO,M3C ; X-RAY DIFFRACTION 1.68Å
e1qxwA1[A:1-251] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
methionyl aminopeptidase ; ligands: ACT,CO,M1C ; X-RAY DIFFRACTION 1.67Å
e1xgnA2[A:1-194,A:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.9Å
e1xgmA2[A:1-194,A:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.80Å
e1xgnB2[B:1-194,B:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.9Å
e1xgmB2[B:1-194,B:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.80Å
e1xgoA2[A:1-194,A:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; X-RAY DIFFRACTION 3.50Å
e1xgsB2[B:1-194,B:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 1.75Å
e1wbqA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.300Å
e1jawA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: ACT,MN ; X-RAY DIFFRACTION 2.7Å
e1n51A1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MN ; X-RAY DIFFRACTION 2.3Å
e1m35E1[E:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e1w2mD1[D:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e1w2mE1[E:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e1m35B1[B:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e1w2mF1[F:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e2bwuA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: FLC,MG,NA ; X-RAY DIFFRACTION 2.200Å
e1w7vC1[C:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.000Å
e1a16A1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: LEU,MN,PRO ; X-RAY DIFFRACTION 2.3Å
e1wl9A1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Xaa-Pro aminopeptidase ; ligands: MN ; X-RAY DIFFRACTION 1.90Å
e1w7vD1[D:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.000Å
e1wlrA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Xaa-Pro aminopeptidase ; ligands: PG4 ; X-RAY DIFFRACTION 2.10Å
e1m35D1[D:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e2bwwA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: FLC,MG,MN,MRD ; X-RAY DIFFRACTION 2.600Å
e2bwxA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 1.700Å
e2bwsA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 1.750Å
e1m35F1[F:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e2bhdA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,MG ; X-RAY DIFFRACTION 2.500Å
e1w7vB1[B:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.000Å
e2bwyA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: FLC,MG,MN,SO4 ; X-RAY DIFFRACTION 2.400Å
e1w2mB1[B:177-438] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e1wl6A1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Xaa-Pro aminopeptidase ; ligands: CL,IPA,MG,XPE ; X-RAY DIFFRACTION 2.0Å
e2bhbA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,MG,MRD,ZN ; X-RAY DIFFRACTION 2.40Å
e1w7vA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.000Å
e1m35C1[C:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e2bwtA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE P ; ligands: FLC,MG,MN,MPD ; X-RAY DIFFRACTION 2.900Å
e1wbqB1[B:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.300Å
e2bh3A1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,LEU,MG,PRO,ZN ; X-RAY DIFFRACTION 2.400Å
e1m35A1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 2.4Å
e2bwvA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
AMINOPEPTIDASE P ; ligands: MN ; X-RAY DIFFRACTION 1.700Å
e1wbqC1[C:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.300Å
e1w2mC1[C:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e1w2mA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CA ; X-RAY DIFFRACTION 2.4Å
e1wbqD1[D:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MG,ZN ; X-RAY DIFFRACTION 2.300Å
e2bhaA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,MG ; X-RAY DIFFRACTION 2.400Å
e2bhcA1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,MG,NA ; X-RAY DIFFRACTION 2.400Å
e2bn7A1[A:177-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: FLC,LEU,MG,MN,PRO,ZN ; X-RAY DIFFRACTION 2.400Å
e2v3xA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MN ; X-RAY DIFFRACTION 1.70Å
e2v3yA1[A:177-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: MN ; X-RAY DIFFRACTION 1.60Å
e1pv9B1[B:125-345] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Xaa-Pro dipeptidase ; ligands: ZN ; X-RAY DIFFRACTION 1.95Å
e3iu7A1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,FCD,MN,SO4 ; X-RAY DIFFRACTION 1.400Å
e3mx6A1[A:2-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MET,MN,NA ; X-RAY DIFFRACTION 1.700Å
e3s6bA1[A:23-367] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: FE,GOL ; X-RAY DIFFRACTION 1.900Å
e3tavA1[A:2-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,LMR,MG,MLT,NA ; X-RAY DIFFRACTION 2.150Å
e3ig4A1[A:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3q6dA1[A:126-353] Image Pymol Jmol Links: PDB, SCOP, CATH
Proline dipeptidase ; ligands: CA,GOL ; X-RAY DIFFRACTION 1.960Å
e4fukA1[A:60-395] Image Pymol Jmol Links: PDB, SCOP, CATH
METHIONINE AMINOPEPTIDASE ; ligands: UNX,ZN ; X-RAY DIFFRACTION 1.75Å
e3tb5A1[A:1-254] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
METHIONINE AMINOPEPTIDASE ; ligands: CIT ; X-RAY DIFFRACTION 2.3Å
e4a6vA1[A:1-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO3,IKY,MN ; X-RAY DIFFRACTION 1.46Å
e4fkcA1[A:141-370] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO AMINOPEPTIDASE ; ligands: CD ; X-RAY DIFFRACTION 2.6Å
e4fliA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: MN,NA,Y16 ; X-RAY DIFFRACTION 1.5500Å
e4egeA1[A:145-374] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Dipeptidase PepE ; ligands: EDO,UNX,ZN ; X-RAY DIFFRACTION 2.200Å
e2dfiA2[A:1-194,A:272-301] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.1Å
e1y1nA1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE 1B ; ligands: K ; X-RAY DIFFRACTION 1.51Å
e2b3hA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CL,CO,GOL,K ; X-RAY DIFFRACTION 1.10Å
e1wn1A1[A:130-356] Image Pymol Jmol Links: PDB, SCOP, CATH
dipeptidase ; ligands: CO ; X-RAY DIFFRACTION 2.25Å
e4iu6A1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,FZ1,K,SO4 ; X-RAY DIFFRACTION 1.900Å
e1wkmA2[A:1-194,A:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: MET,MN ; X-RAY DIFFRACTION 2.3Å
e1wkmB2[B:1-194,B:272-295] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: MET,MN ; X-RAY DIFFRACTION 2.3Å
e1yj3A1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: BME,CO,K,MET ; X-RAY DIFFRACTION 1.6Å
e2b3kA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: ACT,CO,GOL,K ; X-RAY DIFFRACTION 1.55Å
e2b3lA1[A:89-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: ACY,GOL,K ; X-RAY DIFFRACTION 1.50Å
e2gz5A1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE 1 ; ligands: CO,GOL,K,OVA ; X-RAY DIFFRACTION 1.1Å
e2g6pA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,EPE,GOL,HM2,K ; X-RAY DIFFRACTION 1.77Å
e2nq6A1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE 1 ; ligands: CA,CO,GOL,HM4 ; X-RAY DIFFRACTION 1.5Å
e2nq7A1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE 1 ; ligands: CO,GOL,HM5,K ; X-RAY DIFFRACTION 1.6Å
e2zsgB1[B:132-359] Image Pymol Jmol Links: PDB, SCOP, CATH
AMINOPEPTIDASE P, PUTATIVE ; X-RAY DIFFRACTION 1.65Å
e2dfiB2[B:1-194,B:272-301] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: CO ; X-RAY DIFFRACTION 2.1Å
e3bipB1[B:171-448] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT complex subunit SPT16 ; X-RAY DIFFRACTION 1.940Å
e3biqA1[A:171-447] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT complex subunit SPT16 ; ligands: GOL ; X-RAY DIFFRACTION 1.73Å
e3bitA1[A:171-447] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT complex subunit SPT16 ; ligands: BME,CL ; X-RAY DIFFRACTION 1.900Å
e3bitB1[B:171-447] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT complex subunit SPT16 ; ligands: BME,CL ; X-RAY DIFFRACTION 1.900Å
e3cb5B1[B:174-442] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT COMPLEX SUBUNIT SPT16 ; X-RAY DIFFRACTION 2.05Å
e3cb6A1[A:174-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT COMPLEX SUBUNIT SPT16 ; X-RAY DIFFRACTION 1.84Å
e2howA1[A:130-356] Image Pymol Jmol Links: PDB, SCOP, CATH
356AA LONG HYPOTHETICAL DIPEPTIDASE ; X-RAY DIFFRACTION 2.4Å
e2howB1[B:130-356] Image Pymol Jmol Links: PDB, SCOP, CATH
356AA LONG HYPOTHETICAL DIPEPTIDASE ; X-RAY DIFFRACTION 2.4Å
e3iu8A1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,NI,SO4,T03 ; X-RAY DIFFRACTION 1.850Å
e3iu9A1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,NI,SO4,T07 ; X-RAY DIFFRACTION 1.750Å
e3mx6B1[B:-1-258] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MET,MN,NA ; X-RAY DIFFRACTION 1.700Å
e3ig4B1[B:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3ig4C1[C:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3ig4D1[D:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3ig4E1[E:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3ig4F1[F:173-419] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-pro aminopeptidase ; ligands: MN,SO4 ; X-RAY DIFFRACTION 2.89Å
e3mr1A1[A:0-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,PO4 ; X-RAY DIFFRACTION 2.000Å
e3mr1B1[B:1-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,PO4 ; X-RAY DIFFRACTION 2.000Å
e3mr1C1[C:0-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,NA,PO4 ; X-RAY DIFFRACTION 2.000Å
e3mr1D1[D:0-248] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,MN,NA,PO4 ; X-RAY DIFFRACTION 2.000Å
e3pkaA1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,MN,SO4,Y02 ; X-RAY DIFFRACTION 1.25Å
e3pkbA1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,MN,SO4,Y16 ; X-RAY DIFFRACTION 1.25Å
e3pkcA1[A:4-284] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,Y08 ; X-RAY DIFFRACTION 1.470Å
e3pkdA1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: MN,Y10 ; X-RAY DIFFRACTION 1.47Å
e3pkeA1[A:2-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,NI,SO4,Y10 ; X-RAY DIFFRACTION 1.600Å
e3tavB1[B:2-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; ligands: CL,MG,NA ; X-RAY DIFFRACTION 2.150Å
e3q6dB1[B:126-353] Image Pymol Jmol Links: PDB, SCOP, CATH
Proline dipeptidase ; ligands: CA ; X-RAY DIFFRACTION 1.960Å
e3q6dC1[C:126-352] Image Pymol Jmol Links: PDB, SCOP, CATH
Proline dipeptidase ; ligands: CA ; X-RAY DIFFRACTION 1.960Å
e4hxxA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: 1AY,CO,K,SO4 ; X-RAY DIFFRACTION 2.090Å
e3tb5B1[B:1-254] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
METHIONINE AMINOPEPTIDASE ; ligands: CIT ; X-RAY DIFFRACTION 2.3Å
e4a6wA1[A:1-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: 5C1,MN ; X-RAY DIFFRACTION 1.46Å
e4a6vB1[B:1-264] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METHIONINE AMINOPEPTIDASE ; ligands: IKY,MN ; X-RAY DIFFRACTION 1.46Å
e4b28A1[A:237-445] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
METALLOPEPTIDASE, FAMILY M24, PUTATIVE ; ligands: FE ; X-RAY DIFFRACTION 2.15Å
e4fo8A1[A:2-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MET,MN ; X-RAY DIFFRACTION 1.900Å
e4fo8D1[D:2-260] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MET,MN ; X-RAY DIFFRACTION 1.900Å
e4fo7A1[A:2-259] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MN ; X-RAY DIFFRACTION 1.800Å
e4fo7B1[B:2-261] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MN ; X-RAY DIFFRACTION 1.800Å
e4fo7C1[C:2-259] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MN ; X-RAY DIFFRACTION 1.800Å
e4fo7D1[D:2-259] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MN ; X-RAY DIFFRACTION 1.800Å
e4fo8B1[B:2-262] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MET,MN ; X-RAY DIFFRACTION 1.900Å
e4fo8C1[C:2-267] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: MET,MN ; X-RAY DIFFRACTION 1.900Å
e4idyA1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 2 ; ligands: HED,K ; X-RAY DIFFRACTION 2.00Å
e4ikrA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,GOL,K,PVP ; X-RAY DIFFRACTION 1.78Å
e4iksA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,GOL,K,TFD ; X-RAY DIFFRACTION 1.70Å
e4iktA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,GOL,K,TFV ; X-RAY DIFFRACTION 1.60Å
e4ikuA1[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: CO,K,SHX ; X-RAY DIFFRACTION 1.30Å
e4iecA1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 2 ; ligands: CO,K ; X-RAY DIFFRACTION 2.00Å
e4if7A1[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 2 ; ligands: CO,HCM ; X-RAY DIFFRACTION 2.0Å
e4km3A1[A:1-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; X-RAY DIFFRACTION 3.2Å
e3bipA5[A:174-447] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
FACT complex subunit SPT16 ; X-RAY DIFFRACTION 1.940Å
e2oknB3[B:186-483] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-Pro dipeptidase ; ligands: MN,PI ; X-RAY DIFFRACTION 2.45Å
e2iw2A3[A:186-484] Image Pymol Jmol Links: PDB, SCOP, CATH
XAA-PRO DIPEPTIDASE ; ligands: NA ; X-RAY DIFFRACTION 1.82Å
e2oknA3[A:186-483] Image Pymol Jmol Links: PDB, SCOP, CATH
Xaa-Pro dipeptidase ; ligands: MN,PI ; X-RAY DIFFRACTION 2.45Å
e4flkA2[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: MN,NA,Y10 ; X-RAY DIFFRACTION 1.470Å
e4fllA2[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: MN,NA,YZ6 ; X-RAY DIFFRACTION 1.500Å
e4fljA2[A:90-393] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase 1 ; ligands: MN,NA,Y08 ; X-RAY DIFFRACTION 1.7400Å
e3l24A5[A:158-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO DIPEPTIDASE ; ligands: GOA,MN ; X-RAY DIFFRACTION 2.3Å
e3l7gA3[A:158-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO DIPEPTIDASE ; ligands: M44,MN ; X-RAY DIFFRACTION 2.7Å
e3rorA2[A:4-285] Image Pymol Jmol Links: PDB, SCOP, CATH
Methionine aminopeptidase ; ligands: BME,CO,K ; X-RAY DIFFRACTION 2.00Å
e3tb5C2[C:3-162,C:189-254] Image Pymol Jmol Links: PDB, SCOP, CATHDOI
METHIONINE AMINOPEPTIDASE ; X-RAY DIFFRACTION 2.3Å
e4km3B2[B:1-286] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
Methionine aminopeptidase ; X-RAY DIFFRACTION 3.2Å
e2iw2B3[B:189-484] Image Pymol Jmol Links: PDB, SCOP, CATH
XAA-PRO DIPEPTIDASE ; ligands: NA ; X-RAY DIFFRACTION 1.82Å
e3l7gC3[C:163-345,C:369-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO DIPEPTIDASE ; ligands: M44,MN ; X-RAY DIFFRACTION 2.7Å
e3l24C3[C:164-345,C:369-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO DIPEPTIDASE ; ligands: GOA,MN ; X-RAY DIFFRACTION 2.3Å
e3l7gB5[B:164-345,B:369-440] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI
XAA-PRO DIPEPTIDASE ; ligands: M44,MN ; X-RAY DIFFRACTION 2.7Å
Nexta/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