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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: Alpha-beta plaits
H: CRISPR transcript (pre-crRNA) processing endoribonuclease-related
T: CRISPR transcript (pre-crRNA) processing endoribonuclease-related
F: RAMPs

PF03787 CL0362

Representatives:

e4w8vA1[A:102-340] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr6 ; X-RAY DIFFRACTION 2.15Å

e4l6uA1[A:1-200] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein ; X-RAY DIFFRACTION 2.5Å

e4l6uB2[B:1-198] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein ; X-RAY DIFFRACTION 2.5Å

e4w8zA1[A:1-209] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr1-1 ; X-RAY DIFFRACTION 2.7Å

e4w8vB1[B:102-339] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr6 ; X-RAY DIFFRACTION 2.15Å

e4qtsA1[A:1-262] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR type III-associated RAMP protein Csm4 ; X-RAY DIFFRACTION 3.1Å

e6ifkB1[B:2-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm4 ; ligands: ANP ; ELECTRON MICROSCOPY

e6ifyB2[B:2-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm4 ; ELECTRON MICROSCOPY

e6ig0B2[B:2-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e6ifnB1[B:2-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm4 ; X-RAY DIFFRACTION 2.9Å

e6nudI2[I:3-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR type III-associated RAMP protein Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e6nueI2[I:3-206] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR type III-associated RAMP protein Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e6xn7B1[B:1-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm4 ; ELECTRON MICROSCOPY

e6xn3B1[B:1-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm4 ; ELECTRON MICROSCOPY

e6xn4B2[B:1-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm4 ; ELECTRON MICROSCOPY

e6xn5B1[B:1-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm4 ; ELECTRON MICROSCOPY

e7uzwH2[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ELECTRON MICROSCOPY

e7uzxH1[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ELECTRON MICROSCOPY

e7uzyH1[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ELECTRON MICROSCOPY

e7uzzH2[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ELECTRON MICROSCOPY

e7v00H2[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e7v01H1[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e7v02H2[H:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm4 ; ELECTRON MICROSCOPY

e8do6B1[B:5-214] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e6ifuG1[G:2-79,G:104-204] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm4 ; ELECTRON MICROSCOPY

e6ifnH1[H:3-357] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; X-RAY DIFFRACTION 2.9Å

e6iqwF1[F:2-336,F:381-396] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm5 ; ELECTRON MICROSCOPY

e6muuF1[F:1-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm5 ; ELECTRON MICROSCOPY

e6ifkH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6iflH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6ifrH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6ifuH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6ifyH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6ifzH1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6ig0H1[H:3-355] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated RAMP protein Csm5 ; ELECTRON MICROSCOPY

e6murF1[F:1-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein ; ELECTRON MICROSCOPY

e6musF1[F:1-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm5 ; ELECTRON MICROSCOPY

e6mutF1[F:1-397] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm5 ; ELECTRON MICROSCOPY

e6ldnA1[A:3-360,A:383-396] Image Pymol Jmol Links: PDB, SCOP, CATH

Csm5 ; X-RAY DIFFRACTION 2.6Å

e7jhye1[e:18-181,e:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e7jhyd1[d:18-181,d:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e7jhyc1[c:18-181,c:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e7jhyf1[f:18-181,f:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e7jhyb1[b:18-181,b:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e7jhya1[a:18-181,a:205-265] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csf2 (Cas7) ; ELECTRON MICROSCOPY

e6xn5J1[J:110-352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm5 ; ELECTRON MICROSCOPY

e6xn3J1[J:1-226,J:253-352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm5 ; ELECTRON MICROSCOPY

e6xn4J1[J:1-226,J:253-352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm5 ; ELECTRON MICROSCOPY

e6xn7J1[J:1-226,J:253-352] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Csm5 ; ELECTRON MICROSCOPY

e7uzzE1[E:4-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm5 ; ELECTRON MICROSCOPY

e7v00E1[E:4-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm5 ; ELECTRON MICROSCOPY

e7v01E1[E:4-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm5 ; ELECTRON MICROSCOPY

e7v02E1[E:5-290,E:310-333] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cms protein Csm5 ; ELECTRON MICROSCOPY

e8bmwL1[L:2-202] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated Cas7 paralog (Type III-D) ; ELECTRON MICROSCOPY

e8bmwJ1[J:5-274] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated Cas7 paralog (Type III-D) ; ELECTRON MICROSCOPY

e8do6H1[H:2-335] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

; ELECTRON MICROSCOPY

e6musE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm4 ; ELECTRON MICROSCOPY

e6mutE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm4 ; ELECTRON MICROSCOPY

e6muuE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm4 ; ELECTRON MICROSCOPY

e6muaB2[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Uncharacterized protein Csm4 ; X-RAY DIFFRACTION 2.9Å

e6iqwE2[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ligands: ATP ; ELECTRON MICROSCOPY

e6o7eE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ligands: ANP ; ELECTRON MICROSCOPY

e6o7hE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ligands: G ; ELECTRON MICROSCOPY

e6o7iE1[E:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ELECTRON MICROSCOPY

e6o73B2[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; X-RAY DIFFRACTION 2.85Å

e6o74B2[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ligands: ANP ; X-RAY DIFFRACTION 2.70Å

e6o75B1[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; X-RAY DIFFRACTION 2.60Å

e6o78B2[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; X-RAY DIFFRACTION 2.8Å

e6o79B2[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; X-RAY DIFFRACTION 3.0Å

e6o7bB1[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; X-RAY DIFFRACTION 2.40Å

e6o7dB1[B:2-205] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Csm4 ; ligands: ATP ; X-RAY DIFFRACTION 2.80Å

e4w8xA1[A:1-202] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr1-1 ; ligands: 3GP,PO4 ; X-RAY DIFFRACTION 2.91Å

e4qtsB1[B:1-262] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR type III-associated RAMP protein Csm4 ; X-RAY DIFFRACTION 3.1Å

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: LuxS, MPP, ThrRS/AlaRS common domain

looks like an elaborated ferredoxin

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