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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

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

X: HUP domain-like
H: HUP domains
T: HUP domains
F: Usp

PF00582 CL0039

Representatives:

e2z3vA1[A:2-136] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

Universal stress protein family ; ligands: PGO ; X-RAY DIFFRACTION 1.65Å

e1mjhA1[A:3-162] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

PROTEIN (ATP-BINDING DOMAIN OF PROTEIN MJ0577) ; ligands: ATP ; X-RAY DIFFRACTION 1.7Å

e1jmvA1[A:1-140] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

UNIVERSAL STRESS PROTEIN A ; ligands: SO4 ; X-RAY DIFFRACTION 1.85Å

e1tq8A1[A:13-55,A:76-159] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e3ab7A2[A:152-268] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein TTHA0350 ; X-RAY DIFFRACTION 2.50Å

e1q77B1[B:-2-135] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN AQ_178 ; ligands: SO4 ; X-RAY DIFFRACTION 2.7Å

e1tq8E1[E:13-159] Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e3ab8A2[A:152-268] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNCHARACTERIZED PROTEIN TTHA0350 ; ligands: ATP ; X-RAY DIFFRACTION 1.7Å

e1tq8F1[F:13-159] Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e3ab8B2[B:152-268] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNCHARACTERIZED PROTEIN TTHA0350 ; ligands: ATP ; X-RAY DIFFRACTION 1.7Å

e3ab7B4[B:153-268] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein TTHA0350 ; X-RAY DIFFRACTION 2.50Å

e1tq8C1[C:13-159] Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e1tq8D1[D:13-159] Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e1tq8B1[B:13-159] Image Pymol Jmol Links: PDB, SCOP, CATH

hypothetical protein Rv1636 ; X-RAY DIFFRACTION 2.4Å

e2gm3C1[C:5-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e2gm3D1[D:5-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e2gm3F1[F:5-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e2gm3B1[B:5-174] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e2gm3E1[E:5-175] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e3cisA1[A:155-294] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3loqA1[A:1-139] Image Pymol Jmol Links: PDB, SCOP, CATH

UNIVERSAL STRESS PROTEIN ; ligands: AMP,CL ; X-RAY DIFFRACTION 2.32Å

e3fh0A1[A:-2-141] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNIVERSAL STRESS PROTEIN KPN_01444 ; ligands: ADP,EDO ; X-RAY DIFFRACTION 2.15Å

e3fg9A1[A:-2-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: FMT ; X-RAY DIFFRACTION 1.47Å

e3fdxA1[A:-1-141] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative filament protein / universal stress protein F ; ligands: ATP,FMT,MG ; X-RAY DIFFRACTION 1.580Å

e3fdxB1[B:-1-141] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative filament protein / universal stress protein F ; ligands: ATP,FMT,MG ; X-RAY DIFFRACTION 1.580Å

e3fg9B1[B:-1-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: FMT,MG ; X-RAY DIFFRACTION 1.47Å

e3fg9C1[C:4-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: ACT,FMT ; X-RAY DIFFRACTION 1.47Å

e3fg9D1[D:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: FMT,MG ; X-RAY DIFFRACTION 1.47Å

e3fg9E1[E:4-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: MG ; X-RAY DIFFRACTION 1.47Å

e3fg9F1[F:2-153] Image Pymol Jmol Links: PDB, SCOP, CATH

PROTEIN OF UNIVERSAL STRESS PROTEIN USPA FAMILY ; ligands: MG ; X-RAY DIFFRACTION 1.47Å

e3fh0B1[B:-1-141] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNIVERSAL STRESS PROTEIN KPN_01444 ; ligands: ADP,EDO ; X-RAY DIFFRACTION 2.15Å

e3loqB1[B:1-143] Image Pymol Jmol Links: PDB, SCOP, CATH

UNIVERSAL STRESS PROTEIN ; ligands: AMP,CL ; X-RAY DIFFRACTION 2.32Å

e3olqA2[A:150-309] Image Pymol Jmol Links: PDB, SCOP, CATH

UNIVERSAL STRESS PROTEIN E ; ligands: ACT,GOL,PEG,UNL ; X-RAY DIFFRACTION 1.82Å

e3ab8A1[A:1-151] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNCHARACTERIZED PROTEIN TTHA0350 ; ligands: ATP ; X-RAY DIFFRACTION 1.7Å

e3ab8B1[B:1-151] Image Pymol Jmol Links: PDB, SCOP, CATH

PUTATIVE UNCHARACTERIZED PROTEIN TTHA0350 ; ligands: ATP ; X-RAY DIFFRACTION 1.7Å

e3cisB1[B:139-278] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3cisC1[C:138-277] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3cisD1[D:138-277] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3cisE1[E:139-278] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3ab7A4[A:1-41,A:63-151] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein TTHA0350 ; X-RAY DIFFRACTION 2.50Å

e3ab7B3[B:1-40,B:62-152] Image Pymol Jmol Links: PDB, SCOP, CATH

Putative uncharacterized protein TTHA0350 ; X-RAY DIFFRACTION 2.50Å

e3cisF1[F:139-294] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e3cisG1[G:139-295] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e2jaxA1[A:139-294] Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN TB31.7 ; ligands: ATP,UNX ; X-RAY DIFFRACTION 3.22Å

e3cisH1[H:138-294] Image Pymol Jmol Links: PDB, SCOP, CATH

Uncharacterized protein ; ligands: ATP,MG ; X-RAY DIFFRACTION 2.800Å

e4wnyA1[A:-2-147] Image Pymol Jmol Links: PDB, SCOP, CATH

Universal stress protein ; X-RAY DIFFRACTION 2.250Å

e4wy2A1[A:150-311] Image Pymol Jmol Links: PDB, SCOP, CATH

Universal stress protein E ; ligands: CL,GOL,SO4,U20 ; X-RAY DIFFRACTION 1.800Å

e5cb0A1[A:150-307] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Universal stress protein E ; ligands: Z6X ; X-RAY DIFFRACTION 3.0Å

e5cb0B1[B:150-307] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Universal stress protein E ; ligands: Z6X ; X-RAY DIFFRACTION 3.0Å

e2gm3A1[A:5-175] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

unknown protein ; ligands: AMP ; X-RAY DIFFRACTION 2.50Å

e1q77A1[A:-2-135] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH

HYPOTHETICAL PROTEIN AQ_178 ; X-RAY DIFFRACTION 2.7Å

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.

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