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X - Possible homology level

H - Homology level

T - Topology level

F - Family level

* - Provisional representative


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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

X: Cysteine proteinases-like
H: Cysteine proteinases
T: Cysteine proteinases
F: Peptidase_C1

PF00112 CL0125

Representatives:

e1me4A1[A:1-212] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRUZIPAIN ; ligands: T10 ; X-RAY DIFFRACTION 1.1Å

e4ci7A1[A:31-331] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CELL SURFACE PROTEIN (PUTATIVE CELL SURFACE-ASSOCIATED CYSTEINE PROTEASE) ; ligands: GOL,PGE,SO4 ; X-RAY DIFFRACTION 1.4Å

e1khqA1[A:1-212] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PAPAIN ; X-RAY DIFFRACTION 1.6Å

e4w5cD1[D:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cruzipain ; ligands: 3H7 ; X-RAY DIFFRACTION 3.270Å

e4w5cE1[E:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cruzipain ; X-RAY DIFFRACTION 3.270Å

e4qh6A1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; ligands: 33L ; X-RAY DIFFRACTION 3.13Å

e4qh6B1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; X-RAY DIFFRACTION 3.13Å

e4qh6C1[C:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; X-RAY DIFFRACTION 3.13Å

e4qh6D1[D:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; X-RAY DIFFRACTION 3.13Å

e4qh6E1[E:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; X-RAY DIFFRACTION 3.13Å

e4x6jA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 3Y2,CL,GOL,K,PGO ; X-RAY DIFFRACTION 1.585Å

e4x6hA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 3XT,I37,SO4 ; X-RAY DIFFRACTION 1.000Å

e4x6iA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 3Y1,SO4 ; X-RAY DIFFRACTION 1.87Å

e5a24A1[A:2-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DIONAIN-1 ; ligands: E64,PO4 ; X-RAY DIFFRACTION 1.50Å

e4yyqA1[A:1-216] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform A ; X-RAY DIFFRACTION 1.594Å

e4yyqB1[B:1-216] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform A ; X-RAY DIFFRACTION 1.594Å

e4yyrA1[A:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin B ; ligands: SO4 ; X-RAY DIFFRACTION 1.349Å

e4yysA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform B ; ligands: PO4 ; X-RAY DIFFRACTION 1.350Å

e4yysB1[B:1-221] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform B ; X-RAY DIFFRACTION 1.350Å

e4yyuA1[A:1-221] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform C ; ligands: MES,SO4 ; X-RAY DIFFRACTION 1.177Å

e4yyvA1[A:1-221] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform C ; ligands: 16P,SO4 ; X-RAY DIFFRACTION 1.902Å

e4yywA1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Ficin isoform D ; ligands: SO4 ; X-RAY DIFFRACTION 1.446Å

e5j94A1[A:-7-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 1XF,SO4 ; X-RAY DIFFRACTION 2.22Å

e4yv8A1[A:3-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: SO4 ; X-RAY DIFFRACTION 2.000Å

e4yvaA1[A:3-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: SO4 ; X-RAY DIFFRACTION 1.800Å

e5i4h.1[A:-1-105,B:109-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.419Å

e5ja7A1[A:-6-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 6HM,SO4 ; X-RAY DIFFRACTION 1.61Å

e5ja7B1[B:-7-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 6HM,ACT,GOL,SO4 ; X-RAY DIFFRACTION 1.61Å

e5jh3A1[A:2-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: ACT,CL,SO4 ; X-RAY DIFFRACTION 1.75Å

e5maeA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: 7KN,EDO ; X-RAY DIFFRACTION 1.00Å

e5majA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: 7KH,EDO ; X-RAY DIFFRACTION 1.00Å

e5tdiA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: 7AS ; X-RAY DIFFRACTION 1.4Å

e5mqyA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: EDO,GH4 ; X-RAY DIFFRACTION 1.13Å

e5vcnA1[A:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PEPTIDASE 1 ; ligands: CA,EDO,NAG,PO4 ; X-RAY DIFFRACTION 3.000Å

e5vcnB1[B:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PEPTIDASE 1 ; ligands: CA,EDO,NAG,PO4 ; X-RAY DIFFRACTION 3.000Å

e5vcoE1[E:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PEPTIDASE 1 ; ligands: CA,NAG ; X-RAY DIFFRACTION 2.740Å

e5vcoF1[F:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PEPTIDASE 1 ; ligands: CA,NAG ; X-RAY DIFFRACTION 2.740Å

e5vpkA1[A:1-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der f 1 variant ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.000Å

e5vpkB1[B:1-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der f 1 variant ; ligands: NAG,SO4 ; X-RAY DIFFRACTION 2.000Å

e5vpkC1[C:1-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der f 1 variant ; X-RAY DIFFRACTION 2.000Å

e5vplA1[A:1-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der f 1 variant ; ligands: CA,EDO,NAG ; X-RAY DIFFRACTION 1.900Å

e5vpgA1[A:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der p 1 allergen ; ligands: CA,EDO,NAG ; X-RAY DIFFRACTION 1.950Å

e5vphA1[A:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Der p 1 allergen ; ligands: CA,EDO ; X-RAY DIFFRACTION 2.500Å

e4n4zA1[A:26-339] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine peptidase C (CPC) ; X-RAY DIFFRACTION 3.3Å

e4hwyA1[A:27-340] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine peptidase C (CPC) ; X-RAY DIFFRACTION 2.1Å

e5fpwA1[A:8-314] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PRO CATHEPSIN B S9 ; X-RAY DIFFRACTION 2.10Å

e5fpwB1[B:1008-1315] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PRO CATHEPSIN B S9 ; X-RAY DIFFRACTION 2.10Å

e5fpwC1[C:2008-2315] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PRO CATHEPSIN B S9 ; X-RAY DIFFRACTION 2.10Å

e6exoA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C3E,EDO ; X-RAY DIFFRACTION 1.90Å

e6exoB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C3E,EDO ; X-RAY DIFFRACTION 1.90Å

e6exqA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C2W,EDO ; X-RAY DIFFRACTION 2.50Å

e6exqB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C2W,EDO ; X-RAY DIFFRACTION 2.50Å

e6ezxA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: C7Q ; X-RAY DIFFRACTION 2.34Å

e6ezxB1[B:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: C7Q ; X-RAY DIFFRACTION 2.34Å

e6f06A1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: C7T,CL,ZN ; X-RAY DIFFRACTION 2.02Å

e6f06B1[B:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: C7T,CL,ZN ; X-RAY DIFFRACTION 2.02Å

e6ex8B1[B:1-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C2K,EDO ; X-RAY DIFFRACTION 1.60Å

e5qcdA1[A:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BHJ,SO4 ; X-RAY DIFFRACTION 1.951Å

e5mbmA1[A:-1-254] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin B ; X-RAY DIFFRACTION 2.76Å

e6ay2A1[A:0-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B ; ligands: C1G ; X-RAY DIFFRACTION 1.600Å

e5qbuA1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8J ; X-RAY DIFFRACTION 2.780Å

e5qbwA1[A:1-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8S ; X-RAY DIFFRACTION 3.010Å

e5qbzA1[A:1-217] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8Y ; X-RAY DIFFRACTION 2.8000Å

e5qc2A1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQP ; X-RAY DIFFRACTION 2.260Å

e5qc2B1[B:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQP ; X-RAY DIFFRACTION 2.260Å

e5qcgA1[A:1-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJJ,SO4 ; X-RAY DIFFRACTION 2.695Å

e5qbuB1[B:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8J ; X-RAY DIFFRACTION 2.780Å

e5qc0B1[B:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQJ ; X-RAY DIFFRACTION 1.900Å

e5qc5B1[B:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BAJ ; X-RAY DIFFRACTION 2.400Å

e5qcfA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJD,GOL,SO4 ; X-RAY DIFFRACTION 2.1000Å

e5qbvA1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: N2D ; X-RAY DIFFRACTION 1.800Å

e5qbvB1[B:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: N2D ; X-RAY DIFFRACTION 1.800Å

e5qbxA1[A:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8V ; X-RAY DIFFRACTION 2.100Å

e5qbxB1[B:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B8V ; X-RAY DIFFRACTION 2.100Å

e5qbyA1[A:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: N2A ; X-RAY DIFFRACTION 2.250Å

e5qbyB1[B:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: N2A ; X-RAY DIFFRACTION 2.250Å

e5qc0A1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQJ ; X-RAY DIFFRACTION 1.900Å

e5qc1A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B9S ; X-RAY DIFFRACTION 2.0820Å

e5qc1B1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B9S ; X-RAY DIFFRACTION 2.0820Å

e5qc3A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B9Y ; X-RAY DIFFRACTION 1.9980Å

e5qc3B1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: B9Y ; X-RAY DIFFRACTION 1.9980Å

e5qc4A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: BC7 ; X-RAY DIFFRACTION 2.100Å

e5qc4B1[B:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: BC7 ; X-RAY DIFFRACTION 2.100Å

e5qc5A1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BAJ ; X-RAY DIFFRACTION 2.400Å

e5qc6A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BCJ ; X-RAY DIFFRACTION 2.100Å

e5qc6B1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BCJ ; X-RAY DIFFRACTION 2.100Å

e5qc7A1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQS,EOH ; X-RAY DIFFRACTION 1.900Å

e5qc7B1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BQS,DMS,EOH ; X-RAY DIFFRACTION 1.900Å

e5qc8A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BFV ; X-RAY DIFFRACTION 1.740Å

e5qc8B1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BFV ; X-RAY DIFFRACTION 1.740Å

e5qc9A1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BG7 ; X-RAY DIFFRACTION 1.999Å

e5qc9B1[B:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BG7 ; X-RAY DIFFRACTION 1.999Å

e5qcaA1[A:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BGJ,SO4 ; X-RAY DIFFRACTION 2.290Å

e5qcaB1[B:0-217] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BGJ,SO4 ; X-RAY DIFFRACTION 2.290Å

e5qcbA1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BHV ; X-RAY DIFFRACTION 2.198Å

e5qcbB1[B:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BHV ; X-RAY DIFFRACTION 2.198Å

e5qccA1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BGY ; X-RAY DIFFRACTION 1.797Å

e5qccB1[B:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BGY ; X-RAY DIFFRACTION 1.797Å

e5qceA1[A:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJD ; X-RAY DIFFRACTION 2.780Å

e5qceB1[B:1-221] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJD ; X-RAY DIFFRACTION 2.780Å

e5qcgB1[B:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJJ,SO4 ; X-RAY DIFFRACTION 2.695Å

e5qchA1[A:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJS,SO4 ; X-RAY DIFFRACTION 2.200Å

e5qchB1[B:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJS,GOL,SO4 ; X-RAY DIFFRACTION 2.200Å

e5qchC1[C:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJS,SO4 ; X-RAY DIFFRACTION 2.200Å

e5qchD1[D:1-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJS,GOL,SO4 ; X-RAY DIFFRACTION 2.200Å

e5qciA1[A:0-222] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJV,GOL,SO4 ; X-RAY DIFFRACTION 2.1790Å

e5qcjA1[A:0-220] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJY,SO4 ; X-RAY DIFFRACTION 2.0000Å

e5qcjB1[B:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJY,SO4 ; X-RAY DIFFRACTION 2.0000Å

e5qcjC1[C:0-218] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin S ; ligands: BJY,SO4 ; X-RAY DIFFRACTION 2.0000Å

e6ay2B1[B:1-254] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B ; ligands: C1G ; X-RAY DIFFRACTION 1.600Å

e5mblA1[A:1-255] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin B ; X-RAY DIFFRACTION 1.81Å

e5mbmB1[B:0-254] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin B ; X-RAY DIFFRACTION 2.76Å

e6ex8A1[A:1-217] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: C2K,EDO ; X-RAY DIFFRACTION 1.60Å

e6ezpA1[A:1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L1 ; ligands: C3E,GOL ; X-RAY DIFFRACTION 1.37Å

e6mirA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

e6h8tA1[A:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Papain ; ligands: ACT,CL,SO4,YXX,YXZ ; X-RAY DIFFRACTION 2.1Å

e6czkA1[A:94-313] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pro-cathepsin H ; ligands: BMA,GOL,NAG,SO4 ; X-RAY DIFFRACTION 2.00Å

e5z5oA2[A:100-314] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: CL,EDO,GOL,NA,PEG ; X-RAY DIFFRACTION 1.92Å

e6ashA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: 1XF ; X-RAY DIFFRACTION 1.42Å

e6h8tJ1[J:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Papain ; ligands: ACT,NA,SO4,YXX,YXZ ; X-RAY DIFFRACTION 2.1Å

e6mirB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

e6misA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: E64 ; X-RAY DIFFRACTION 1.98Å

e6misB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: E64 ; X-RAY DIFFRACTION 1.98Å

e6czsA2[A:116-335] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Pro-cathepsin H ; ligands: BMA,CL,NAG,SO4,TRE ; X-RAY DIFFRACTION 1.66Å

e6bkiA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: SO4 ; X-RAY DIFFRACTION 2.94Å

e6bkiB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: SO4 ; X-RAY DIFFRACTION 2.94Å

e5ogqA1[A:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: 9U8 ; X-RAY DIFFRACTION 1.910Å

e5ogqB1[B:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: 9U8,ACT ; X-RAY DIFFRACTION 1.910Å

e5ogqC1[C:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: 9U8 ; X-RAY DIFFRACTION 1.910Å

e5ogrA1[A:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: ACT,VS4 ; X-RAY DIFFRACTION 1.550Å

e5ogrB1[B:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: ACT,VS4 ; X-RAY DIFFRACTION 1.550Å

e5ogrC1[C:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: ACT,VS4 ; X-RAY DIFFRACTION 1.550Å

e6qbsA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: CA,CL,HVW ; X-RAY DIFFRACTION 1.7Å

e6qbsB1[B:216-430] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: CA,CL,HVW ; X-RAY DIFFRACTION 1.7Å

e6ic5B1[B:206-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,HB5,NAG ; X-RAY DIFFRACTION 2.0Å

e6ic5C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,HB5,NAG ; X-RAY DIFFRACTION 2.0Å

e6okjA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; X-RAY DIFFRACTION 1.73Å

e6ic6B1[B:206-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,H9B,NAG ; X-RAY DIFFRACTION 1.898Å

e6ic7B1[B:206-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,H9H,NAG ; X-RAY DIFFRACTION 2.0Å

e6ic6C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,H9B,NAG ; X-RAY DIFFRACTION 1.898Å

e6ic7C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,H9H,NAG ; X-RAY DIFFRACTION 2.0Å

e6okjB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; X-RAY DIFFRACTION 1.73Å

e6n3sA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; ligands: EDO,PO4 ; X-RAY DIFFRACTION 1.19Å

e6n3sB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; ligands: EDO ; X-RAY DIFFRACTION 1.19Å

e6o2xA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; ligands: EDO,PO4 ; X-RAY DIFFRACTION 1.19Å

e6o2xB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cruzipain ; ligands: EDO ; X-RAY DIFFRACTION 1.19Å

e6hgyA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin K ; ligands: G4B ; X-RAY DIFFRACTION 2.20Å

e6u7dA2[A:100-315] Image Pymol Jmol Links: PDB, SCOP, CATH

FBSB ; X-RAY DIFFRACTION 3.00Å

e6rn6B1[B:205-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,GOL,NAG ; X-RAY DIFFRACTION 2.4Å

e6rn6E1[E:206-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,K9Q ; X-RAY DIFFRACTION 2.4Å

e6rn7B1[B:206-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,DMS,GOL,K9W,NAG ; X-RAY DIFFRACTION 1.66Å

e6rn9B1[B:207-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: ACT,CL,DMS,K9Z,NAG ; X-RAY DIFFRACTION 1.9Å

e6rneB1[B:207-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: ACT,CL,DMS,KA8,NAG,PEG ; X-RAY DIFFRACTION 1.65Å

e6rniB1[B:205-367] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: ACT,CL,DMS,KAQ,NAG ; X-RAY DIFFRACTION 1.54Å

e6rn6C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,NAG ; X-RAY DIFFRACTION 2.4Å

e6rn6F1[F:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,K9Q ; X-RAY DIFFRACTION 2.4Å

e6rn7C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,DMS,K9W,NAG ; X-RAY DIFFRACTION 1.66Å

e6rn9C1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,DMS,K9Z,NAG ; X-RAY DIFFRACTION 1.9Å

e6rneC1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: ACT,CL,DMS,KA8,NAG ; X-RAY DIFFRACTION 1.65Å

e6rniC1[C:372-439] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Dipeptidyl peptidase 1 ; ligands: CL,DMS,KAQ,NAG ; X-RAY DIFFRACTION 1.54Å

e6sszA1[A:-17-223] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine proteinase falcipain 2a ; ligands: JV1 ; X-RAY DIFFRACTION 3.45Å

e6sszB1[B:-16-222] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine proteinase falcipain 2a ; ligands: JV1 ; X-RAY DIFFRACTION 3.45Å

e6tcxAAA1[AAA:1-212] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Papain ; ligands: EPE,N1W ; X-RAY DIFFRACTION 1.65Å

e6ql8A1[A:-1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: J5N,NO3 ; X-RAY DIFFRACTION 1.800Å

e6qlmA1[A:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: GOL,HFH,NA ; X-RAY DIFFRACTION 1.500Å

e6qlmB1[B:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: HFH,MHA,NA ; X-RAY DIFFRACTION 1.500Å

e6qlwA1[A:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: CL,J5T,NA ; X-RAY DIFFRACTION 2.000Å

e6qlwB1[B:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: CL,J5T ; X-RAY DIFFRACTION 2.000Å

e6qlwC1[C:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: CL,J5T,NA ; X-RAY DIFFRACTION 2.000Å

e6qlwD1[D:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: CL,J5T ; X-RAY DIFFRACTION 2.000Å

e6qlxA1[A:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: HKH ; X-RAY DIFFRACTION 2.100Å

e6qm0A1[A:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: J6B,MHA ; X-RAY DIFFRACTION 1.900Å

e6qm0B1[B:0-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: J6B ; X-RAY DIFFRACTION 1.900Å

e6rowG1[G:9-137,G:159-253] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine Protease ; ELECTRON MICROSCOPY

e6p4eA1[A:2-217] Image Pymol Jmol Links: PDB, SCOP, CATH

Cysteine proteinase B ; ligands: ACT,GES,MPD,NA ; X-RAY DIFFRACTION 1.35Å

e6p4eB1[B:1-217] Image Pymol Jmol Links: PDB, SCOP, CATH

Cysteine proteinase B ; ligands: ACT,GES,MPD,NA,TRS ; X-RAY DIFFRACTION 1.35Å

e6pxfA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cathepsin K ; ligands: J0V ; X-RAY DIFFRACTION 1.85Å

e6x42X1[X:563-827] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Serine repeat antigen 5 ; ligands: CA,CL,EDO,I3C ; X-RAY DIFFRACTION 1.2Å

e6zq3A1[A:3-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Silicatein alpha ; X-RAY DIFFRACTION 2.4Å

e6ux6A1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH

Cruzipain ; ligands: GOL,TM8 ; X-RAY DIFFRACTION 1.94Å

e7avmA2[A:123-326] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; ligands: GOL ; X-RAY DIFFRACTION 2.8Å

e6y6lA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.300Å

e6y6lB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: GOL,SO4 ; X-RAY DIFFRACTION 1.300Å

e6ycbA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: GOL,SO4,TLA ; X-RAY DIFFRACTION 1.250Å

e6ycbB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: GOL,SO4,TLA ; X-RAY DIFFRACTION 1.250Å

e6yccA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: E64,GOL,SO4 ; X-RAY DIFFRACTION 1.300Å

e6yccB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: E64,GOL,SO4 ; X-RAY DIFFRACTION 1.300Å

e6ycdA1[A:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: SO4,TCK ; X-RAY DIFFRACTION 1.344Å

e6ycdB1[B:1-215] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ananain ; ligands: GOL,SO4,TCK ; X-RAY DIFFRACTION 1.344Å

e6yceA1[A:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; X-RAY DIFFRACTION 1.790Å

e6yceB1[B:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; ligands: IPA,NAG ; X-RAY DIFFRACTION 1.790Å

e6ycfA1[A:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; ligands: CIT,E64,NAG ; X-RAY DIFFRACTION 1.830Å

e6ycfB1[B:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; ligands: E64,IPA,NAG ; X-RAY DIFFRACTION 1.830Å

e6ycgA1[A:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; ligands: CIT,IPA ; X-RAY DIFFRACTION 1.440Å

e6ycgB1[B:2-216] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

FBSB ; ligands: TCK ; X-RAY DIFFRACTION 1.440Å

e6yi7A1[A:70-323] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin B-like peptidase (C01 family) ; ligands: ACT,ORW ; X-RAY DIFFRACTION 1.290Å

e6yynBBB1[BBB:-1-220] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: Q1E,SO4 ; X-RAY DIFFRACTION 2.22Å

e6yyrAAA1[AAA:-1-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: EDO,FLC,Q1N,SO4 ; X-RAY DIFFRACTION 1.30Å

e6yyrBBB1[BBB:-1-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: EDO,FLC,Q1N,SO4 ; X-RAY DIFFRACTION 1.30Å

e6yynAAA1[AAA:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: FLC,Q1E ; X-RAY DIFFRACTION 2.22Å

e6yyoAAA1[AAA:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: DMS,EDO,Q1K,SO4 ; X-RAY DIFFRACTION 1.50Å

e6yyoBBB1[BBB:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: EDO,FLC,Q1K,SO4 ; X-RAY DIFFRACTION 1.50Å

e6yypAAA1[AAA:0-219] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin S ; ligands: ACT,Q1H ; X-RAY DIFFRACTION 2.05Å

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e1xkgA3[A:82-306] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed,

Major mite fecal allergen Der p 1 ; ligands: GOL,SO4,YT3 ; X-RAY DIFFRACTION 1.61Å

e1deuA1[A:6P-242] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROCATHEPSIN X ; X-RAY DIFFRACTION 1.7Å

e1cs8A3[A:1-220] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

HUMAN PROCATHEPSIN L ; X-RAY DIFFRACTION 1.8Å

e1gmyA1[A:0-253] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CATHEPSIN B ; ligands: AEM,APD,DFA ; X-RAY DIFFRACTION 1.900Å

e3f75A1[A:2-224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cathepsin L Protease ; ligands: CL ; X-RAY DIFFRACTION 1.99Å

e1k3b.1[B:207-370,C:371-439] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

DIPEPTYDIL-PEPTIDASE I HEAVY CHAIN & DIPEPTYDIL-PEPTIDASE I LIGHT CHAIN ; ligands: CL,NAG,SO4 ; X-RAY DIFFRACTION 2.15Å

e2oulA1[A:-16-224] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Falcipain 2 ; X-RAY DIFFRACTION 2.200Å

e5egwA2[A:131-386] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cysteine protease ; X-RAY DIFFRACTION 2.70Å

e1pciA3[A:1-216] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROCARICAIN ; X-RAY DIFFRACTION 3.2Å

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.

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