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
looks like an elaborated ferredoxin
contains a HTH motif
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
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