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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

X: Immunoglobulin-like beta-sandwich
H: Immunoglobulin-related
T: Common fold of diphtheria toxin/transcription factors/cytochrome f
F: Cohesin

PF00963 CL0203

Representatives:

e1zv9A1[A:3-173] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal scaffoldin adaptor protein B ; ligands: ACY,EDO,FMT,NO3,PDO ; X-RAY DIFFRACTION 1.28Å

e1qznA1[A:3-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

cellulosomal scaffoldin adaptor protein B ; X-RAY DIFFRACTION 1.90Å

e3l8qA1[A:1-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal scaffoldin adaptor protein B ; ligands: EDO,PDO ; X-RAY DIFFRACTION 1.57Å

e3bwzA1[A:3-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CELLULOSOMAL SCAFFOLDIN ADAPTOR PROTEIN B ; ligands: CL,EDO,NO3 ; X-RAY DIFFRACTION 1.2Å

e3f2lA1[A:2-172] Image Pymol Jmol Links: PDB, SCOP, CATH

Cellulosomal scaffoldin adaptor protein B ; ligands: EDO,NH4,NO3 ; X-RAY DIFFRACTION 1.85Å

e3l8qB1[B:1-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal scaffoldin adaptor protein B ; ligands: EDO ; X-RAY DIFFRACTION 1.57Å

e3l8qC1[C:3-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal scaffoldin adaptor protein B ; ligands: EDO,PDO ; X-RAY DIFFRACTION 1.57Å

e3l8qD1[D:4-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal scaffoldin adaptor protein B ; ligands: EDO ; X-RAY DIFFRACTION 1.57Å

e2w1nA1[A:773-907] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GLCNACASE NAGJ ; ligands: ACT ; X-RAY DIFFRACTION 1.8Å

e2jh2A1[A:7-139] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GLCNACASE NAGJ ; X-RAY DIFFRACTION 2.50Å

e2jh2B1[B:7-139] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GLCNACASE NAGJ ; X-RAY DIFFRACTION 2.50Å

e2jh2C1[C:8-137] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GLCNACASE NAGJ ; X-RAY DIFFRACTION 2.50Å

e2o4eA1[A:29-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GlcNAcase nagJ ; SOLUTION NMR

e4umsA1[A:1039-1192] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CELLULOSOMAL ANCHORING SCAFFOLDIN B ; X-RAY DIFFRACTION 1.84Å

e5lxvA1[A:3-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Scaffoldin C ; X-RAY DIFFRACTION 2.400Å

e5lxvC1[C:1-173] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Scaffoldin C ; X-RAY DIFFRACTION 2.400Å

e2vn6A1[A:12-152] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

SCAFFOLDING PROTEIN ; X-RAY DIFFRACTION 1.49Å

e2oznA1[A:774-906] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

O-GlcNAcase nagJ ; ligands: CL ; X-RAY DIFFRACTION 1.6Å

e1aohA1[A:5-147] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cellulosomal-scaffolding protein A ; X-RAY DIFFRACTION 1.7Å

e2vo8A1[A:939-1074] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

EXO-ALPHA-SIALIDASE ; X-RAY DIFFRACTION 1.70Å

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.

X: Glycosyl hydrolase domain-like

some similarity with Ig fold

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