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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

X: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

X: ClpS-like

contains a HTH motif

X: Alpha-lytic protease prodomain-like
H: KH-domains
T: Prokaryotic type KH domain (KH-domain type II)
F: KH_2

PF07650 CL0007

Representatives:

e1wf3A1[A:181-298] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-binding protein ; ligands: GOL ; X-RAY DIFFRACTION 1.88Å

e1egaA1[A:183-295] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (GTP-BINDING PROTEIN ERA) ; ligands: SO4 ; X-RAY DIFFRACTION 2.4Å

e2uubC2[C:2-106] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S RIBOSOMAL PROTEIN S3 ; X-RAY DIFFRACTION 2.800Å

e1wh9A1[A:1-92] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

40S ribosomal protein S3 ; SOLUTION NMR

e3j9zSC1[SC:1-106] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e5lzcc2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e5lzdc2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ligands: MG ; ELECTRON MICROSCOPY

e5lzec2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e5lzfc2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e5me0C1[C:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6bu8C1[C:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6lkqB1[B:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; X-RAY DIFFRACTION 3.1Å

e6vu3I2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyqI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyrI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vysI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vytI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyuI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vywI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyxI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyyI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vyzI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vz2I2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vz3I1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vz5I1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vz7I2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6vzjI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6x6tI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6x7fI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6x7kI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6x9qI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6xdqI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6xdrI1[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6xgfI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6xiiI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6xijI2[I:2-107] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6yssc2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6ystc1[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

e6ysuc2[c:1-106] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

30S ribosomal protein S3 ; ELECTRON MICROSCOPY

Previous
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 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