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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: beta-Grasp
H: Ubiquitin-related
T: Ubiquitin-like
F: TGS

PF02824 CL0072

Representatives:

e1tkeA2[A:1-62] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE ; X-RAY DIFFRACTION 1.46Å

e8oitBo1[Bo:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e8oiqBo1[Bo:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e1tkgA2[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE ; X-RAY DIFFRACTION 1.5Å

e1tjeA2[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE ; X-RAY DIFFRACTION 1.5Å

e1qf6A2[A:2-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE ; X-RAY DIFFRACTION 2.9Å

e1tkyA2[A:1-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE ; X-RAY DIFFRACTION 1.48Å

e1nyrB2[B:4-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE 1 ; X-RAY DIFFRACTION 2.8Å

e1nyqB2[B:4-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

threonyl-tRNA synthetase 1 ; X-RAY DIFFRACTION 3.2Å

e1nyqA2[A:4-62] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

threonyl-tRNA synthetase 1 ; X-RAY DIFFRACTION 3.2Å

e2kmmA1[A:417-489] Image Pymol Jmol Links: PDB, SCOP, CATH

Guanosine-3',5'-bis(Diphosphate) 3'-pyrophosphohydrolase ; SOLUTION NMR

e3hvzA1[A:396-459] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e2ekiA1[A:1-93] Image Pymol Jmol Links: PDB, SCOP, CATH

Developmentally-regulated GTP-binding protein 1 ; SOLUTION NMR

e3hvzB1[B:396-459] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e3hvzC1[C:396-459] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e3hvzD1[D:396-459] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e3hvzE1[E:397-458] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e3hvzF1[F:396-459] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; X-RAY DIFFRACTION 2.2Å

e1wwtA1[A:1-88] Image Pymol Jmol Links: PDB, SCOP, CATH

Threonyl-tRNA synthetase, cytoplasmic ; SOLUTION NMR

e4ce4c2[c:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MRPL39 ; ELECTRON MICROSCOPY

e4a9aB4[B:292-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBOSOME-INTERACTING GTPASE 1 ; X-RAY DIFFRACTION 2.67Å

e4a9aA8[A:292-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

RIBOSOME-INTERACTING GTPASE 1 ; X-RAY DIFFRACTION 2.67Å

e4v1ac2[c:66-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MITORIBOSOMAL PROTEIN ML39, MRPL39 ; ELECTRON MICROSCOPY

e3j7y71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL39 ; ELECTRON MICROSCOPY

e3j9m71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

mL39 ; ELECTRON MICROSCOPY

e5aj4Bc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

MITORIBOSOMAL PROTEIN ML39, MRPL39 ; ELECTRON MICROSCOPY

e5l3pz4[z:401-466] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP pyrophosphokinase,GTP pyrophosphokinase,GTP pyrophosphokinase ; ELECTRON MICROSCOPY

e5kpw334[33:404-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP pyrophosphokinase ; ELECTRON MICROSCOPY

e5kpx335[33:404-501] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP pyrophosphokinase ; ELECTRON MICROSCOPY

e6gb2Bc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e6gawBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e5ool71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e5oom71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6vu9A4[A:3-62] Image Pymol Jmol Links: PDB, SCOP, CATH

Threonine--tRNA ligase ; X-RAY DIFFRACTION 2.200Å

e6nu271[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6ydpBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e6ydwBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e6i9r72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6vlz72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6vmi72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zs972[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zsa71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zsb72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zsc72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zsd71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zse72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zsg71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5f731[73:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5g732[73:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5h71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5i732[73:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5j71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7a5k732[73:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zm572[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e6zm672[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7nrcSo1[So:294-370] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome-interacting GTPase 2 ; ELECTRON MICROSCOPY

e7nqhBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e7nqlBc1[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e7nshBc1[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e6zsf71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH

e7nsiBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

TGS domain-containing protein ; ELECTRON MICROSCOPY

e7l0871[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of372[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of272[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of072[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7odr72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7o9k71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7nsjBc2[Bc:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e7l2071[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7o9m71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7ods72[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7odt71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of472[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of571[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of671[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7of772[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7og471[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oi872[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oi972[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oia72[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oib72[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oid72[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oie72[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7dojA1[A:1-66] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP pyrophosphokinase ; SOLUTION NMR

e7pd372[7:65-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7rr5R2[R:292-369] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Ribosome-interacting GTPase 1 ; ELECTRON MICROSCOPY

e7oi671[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oi772[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7oic71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7qh672[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7qh772[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7po472[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7qi472[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7qi672[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e8oirBo1[Bo:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e7qi571[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e8any71[7:69-138] Image Pymol Jmol Links: PDB, SCOP, CATH

39S ribosomal protein L39, mitochondrial ; ELECTRON MICROSCOPY

e8oinBo2[Bo:62-135] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Mitochondrial ribosomal protein L39 ; ELECTRON MICROSCOPY

e1wxqA1[A:320-395] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

GTP-BINDING PROTEIN ; X-RAY DIFFRACTION 2.6Å

e1nyrA2[A:4-62] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

THREONYL-TRNA SYNTHETASE 1 ; X-RAY DIFFRACTION 2.8Å

e5iqr83[8:404-501] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

GTP pyrophosphokinase ; ligands: MET,MG ; 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.

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