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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

X: CRISPR RNA silencing complex Cmr2 subunit second helical domain
H: CRISPR RNA silencing complex Cmr2 subunit second helical domain
T: CRISPR RNA silencing complex Cmr2 subunit second helical domain
F: Cmr2_hel_dom2

PF20824

Representatives:

e3ungC5[C:766-871] nonrep Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cmr2dHD ; X-RAY DIFFRACTION 2.3Å

e6xn3A5[A:684-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Cas10 ; ELECTRON MICROSCOPY

e6xn4A3[A:684-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Cas10 ; ELECTRON MICROSCOPY

e6xn5A5[A:684-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Cas10 ; ELECTRON MICROSCOPY

e6xn7A2[A:684-756] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR-associated protein Cas10 ; ELECTRON MICROSCOPY

e7v00F3[F:686-750] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A) ; ELECTRON MICROSCOPY

e7v01F2[F:686-750] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A) ; ELECTRON MICROSCOPY

e3w2vA3[A:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR SYSTEM CMR SUBUNIT CMR2 ; X-RAY DIFFRACTION 2.6Å

e3w2wA3[A:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR SYSTEM CMR SUBUNIT CMR2 ; X-RAY DIFFRACTION 2.5Å

e4dozA3[A:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Putative uncharacterized protein ; X-RAY DIFFRACTION 3.1Å

e4h4kC3[C:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr2 ; X-RAY DIFFRACTION 2.80Å

e3ur3C3[C:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Cmr2dHD ; X-RAY DIFFRACTION 2.4Å

e4w8yB3[B:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr2 ; X-RAY DIFFRACTION 3Å

e3x1lA1[A:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr2 ; X-RAY DIFFRACTION 2.096Å

e4w8yA3[A:766-871] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system Cmr subunit Cmr2 ; X-RAY DIFFRACTION 3Å

e6ifkA5[A:682-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6iflA5[A:675-758] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ifrA5[A:675-758] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ifuA5[A:675-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ifyA5[A:677-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ifzA5[A:677-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ig0A5[A:678-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; ELECTRON MICROSCOPY

e6ifnA3[A:677-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

Type III-A CRISPR-associated protein Csm1 ; X-RAY DIFFRACTION 2.9Å

e6nueJ5[J:673-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A) ; ELECTRON MICROSCOPY

e6nudJ1[J:675-757] Image Pymol Jmol Links: PDB, SCOP, CATH, PubMed, DOI

CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A) ; 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.

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

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