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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: Glucose permease domain IIB-like
H: eIF1-like
T: eIF1-like
F: Img2

PF05046

Representatives:

e4v1al1[l:34-166] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MITORIBOSOMAL PROTEIN ML49, MRPL49 ; ELECTRON MICROSCOPY

e7am2Ad1[Ad:24-87,Ad:120-237] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e8oitBx1[Bx:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: MET,MG,VAL ; ELECTRON MICROSCOPY

e6yxxAl1[Al:60-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e8oiqBx1[Bx:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ligands: MG,PHE ; ELECTRON MICROSCOPY

e6yxyAl1[Al:60-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e4ce4l1[l:91-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MRPL49 ; ELECTRON MICROSCOPY

e1vw471[7:41-146] Image Pymol Jmol Links: PDB, SCOP, CATH Obsolete PDB

e7aoiAl1[Al:60-218] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e7aihAd1[Ad:7-88,Ad:114-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e3j6b71[7:41-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

54S ribosomal protein IMG2, mitochondrial ; ELECTRON MICROSCOPY

e3j7yg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e7aneAd1[Ad:7-88,Ad:114-238] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e3j9mg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ligands: MG ; ELECTRON MICROSCOPY

e5aj4Bl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MITORIBOSOMAL PROTEIN ML49, MRPL49 ; ligands: MG ; ELECTRON MICROSCOPY

e5mrc71[7:41-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e5mre71[7:41-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e5mrf71[7:41-146] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e5oolg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e5oomg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6gb2Bl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e6gawBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6nu2g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6nu3g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6ydpBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e6ydwBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e6z1pAL1[AL:1-145] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Large subunit ribosomal protein ; ELECTRON MICROSCOPY

e6i9rg1[g:36-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: G,MG ; ELECTRON MICROSCOPY

e6vlzg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6vmig1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zs9g1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zsag1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zsbg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zscg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zsdg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zseg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zsgg1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6ywe71[7:82-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e6yws71[7:82-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein ; ELECTRON MICROSCOPY

e6ywv71[7:82-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein ; ELECTRON MICROSCOPY

e6ywx71[7:82-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e6ywy71[7:82-165] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL49 ; ELECTRON MICROSCOPY

e7a5fg31[g3:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7a5gg31[g3:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7a5hg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7a5ig31[g3:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7a5jg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7a5kg31[g3:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e6zm5g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: ALA,MG ; ELECTRON MICROSCOPY

e6zm6g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7nqhBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e7nqlBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e7nshBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e6zsfg1[g:36-166] Image Pymol Jmol Links: PDB, SCOP, CATH

; ligands: MG

e7nsiBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7l08g1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of3g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of2g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of0g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7odrg1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7o9mg1[g:36-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ELECTRON MICROSCOPY

e7nsjBl1[Bl:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG ; ELECTRON MICROSCOPY

e7l20g1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7o9kg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7odsg1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ELECTRON MICROSCOPY

e7odtg1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of4g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of5g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of6g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7of7g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7og4g1[g:35-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oi7g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oi8g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oi9g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oiag1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oibg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oicg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: A,C,MG ; ELECTRON MICROSCOPY

e7oidg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7oieg1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ELECTRON MICROSCOPY

e7oi6g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7pd3g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: A,C,G,MG,U ; ELECTRON MICROSCOPY

e7qh6g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ELECTRON MICROSCOPY

e7qh7g1[g:38-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ELECTRON MICROSCOPY

e7po4g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG ; ELECTRON MICROSCOPY

e7qi4g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG,VAL ; ELECTRON MICROSCOPY

e7qi6g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG,VAL ; ELECTRON MICROSCOPY

e8oirBx1[Bx:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MET,MG,VAL ; ELECTRON MICROSCOPY

e7qi5g1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L49, mitochondrial ; ligands: MG,VAL ; ELECTRON MICROSCOPY

e8anyg1[g:33-166] Image Pymol Jmol Links: PDB, SCOP, CATH

39S ribosomal protein L49, mitochondrial ; ligands: MG,VAL ; ELECTRON MICROSCOPY

e8oinBx1[Bx:34-166] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mrpl34 ; ligands: MG,PHE ; ELECTRON MICROSCOPY

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: ClpS-like

contains a HTH motif

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