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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

X: Repetitive alpha hairpins
H: alpha/alpha toroid
T: alpha/alpha toroid
F: Cobalamin_bind

PF01122 CL0059

Representatives:

e3kq4A1[A:25-299] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gastric intrinsic factor ; ligands: B12,CA ; X-RAY DIFFRACTION 3.3Å

e2bb5A1[A:1-301] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCOBALAMIN II ; ligands: B12 ; X-RAY DIFFRACTION 3.2Å

e2bb6A1[A:1-307] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin II ; ligands: B12,CL ; X-RAY DIFFRACTION 2.000Å

e4kkjA1[A:1-294] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-1 ; ligands: CBY,CYN,NAG ; X-RAY DIFFRACTION 3.000Å

e2pmvB1[B:7-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GASTRIC INTRINSIC FACTOR ; X-RAY DIFFRACTION 2.6Å

e2pmvD1[D:7-273] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GASTRIC INTRINSIC FACTOR ; X-RAY DIFFRACTION 2.6Å

e2bb6B3[B:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin II ; ligands: B12,CL ; X-RAY DIFFRACTION 2.000Å

e2bb6C3[C:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin II ; ligands: B12,CL ; X-RAY DIFFRACTION 2.000Å

e2bb6D3[D:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin II ; ligands: B12,CL ; X-RAY DIFFRACTION 2.000Å

e2bbcA3[A:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin II ; ligands: B12,CL ; X-RAY DIFFRACTION 2.40Å

e2v3nA3[A:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCOBALAMIN-2 ; ligands: B12,CL ; X-RAY DIFFRACTION 2.73Å

e2v3pA3[A:1-306] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCOBALAMIN-2 ; ligands: B12,CL ; X-RAY DIFFRACTION 2.9Å

e2pmvA3[A:7-281] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GASTRIC INTRINSIC FACTOR ; ligands: B12 ; X-RAY DIFFRACTION 2.6Å

e2pmvC3[C:7-281] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GASTRIC INTRINSIC FACTOR ; ligands: B12 ; X-RAY DIFFRACTION 2.6Å

e3kq4C3[C:25-299] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gastric intrinsic factor ; ligands: B12,CA ; X-RAY DIFFRACTION 3.3Å

e3kq4E3[E:25-299] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Gastric intrinsic factor ; ligands: B12,CA ; X-RAY DIFFRACTION 3.3Å

e2bb5B2[B:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TRANSCOBALAMIN II ; ligands: B12 ; X-RAY DIFFRACTION 3.2Å

e4kkiA2[A:1-294] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-1 ; ligands: CNC,NAG,PEG ; X-RAY DIFFRACTION 2.350Å

e4zrpA2[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CA,CNC,GOL ; X-RAY DIFFRACTION 2.1Å

e4zrpB1[B:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC,GOL ; X-RAY DIFFRACTION 2.1Å

e4zrqA1[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC,GOL ; X-RAY DIFFRACTION 2.6Å

e4zrqB1[B:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC,GOL ; X-RAY DIFFRACTION 2.6Å

e7qbdA1[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CA,CNC ; X-RAY DIFFRACTION 4.18Å

e7qbdB1[B:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CA,CNC ; X-RAY DIFFRACTION 4.18Å

e7qbeA1[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC ; X-RAY DIFFRACTION 3.0Å

e7qbeC1[C:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC ; X-RAY DIFFRACTION 3.0Å

e7qbfA2[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CA,CNC,EDO,IOD ; X-RAY DIFFRACTION 1.85Å

e7qbgA2[A:1-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC,GOL ; X-RAY DIFFRACTION 2.69Å

e7qbgC2[C:3-304] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Transcobalamin-2 ; ligands: CNC,GOL ; X-RAY DIFFRACTION 2.69Å

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.

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

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