Annotations: 2WTE

The structure of the CRISPR-associated protein, Csa3, from Sulfolobus solfataricus at 1.8 angstrom resolution.

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CRISPR Csa3-like	8054246	4007634	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PIN domain-like	8054247	3001041	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8054248	3000034	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	PIN domain-like	8054247	3001041	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8054248	3000034	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	HVO_A0114	e2wteA1	A: beta barrels	X: Four-helical up-and-down bundle	H: HTH	T: winged helix domain	F: HVO_A0114	ECOD (v294.2)
B	AAA, TIP49	e2wteB2	A: beta barrels	X: P-loop domains-like	H: Rubredoxin-related	T: Rubredoxin-related	F: AAA, TIP49	ECOD (v294.2)
B	Iso_dh	e2wteB3	A: beta barrels	X: Rubredoxin-like	H: Ferritin/Heme oxygenase	T: Heme oxygenase/Ribonucleotide reductase	F: Iso_dh	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.11700	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
B	3.40.50.11700	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF22662	Csa3 CRISPR-associated Rossmann-like domain (Csa3_N)	Csa3 CRISPR-associated Rossmann-like domain	This domain is found N-terminal in CRISPR-associated protein Csa3 and related proteins. Csa3 consists of two domains [1-3]. The N-terminal domain is a unique variation on the dinucleotide binding domain and it is responsible for dimer formation. In a ...	This domain is found N-terminal in CRISPR-associated protein Csa3 and related proteins. Csa3 consists of two domains [1-3]. The N-terminal domain is a unique variation on the dinucleotide binding domain and it is responsible for dimer formation. In addition, it utilizes two conserved sequence motifs T(h)GF(N/D)E(x)4R and L(x)2G(h)R to form a 2-fold symmetric pocket on the dimer axis. This pocket is likely to represent a regulatory ligand-binding site.	Domain
A, B	PF25212	HVO_A0114 (HVO_A0114)	HVO_A0114	This entry includes archaeal and bacterial sequences, which are mostly uncharacterised, such as HVO_A0114 (swiss:D4GQE6) from Haloferax volcanii. It contains a HTH domain, also found in CRISPR locus-related putative DNA-binding protein Csa3 from Sacc ...	This entry includes archaeal and bacterial sequences, which are mostly uncharacterised, such as HVO_A0114 (swiss:D4GQE6) from Haloferax volcanii. It contains a HTH domain, also found in CRISPR locus-related putative DNA-binding protein Csa3 from Saccharolobus solfataricus (swiss:Q97Y88).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CSA3	DNA binding binding nucleic acid binding	biological process involved in interspecies interaction between organisms defense response to virus response to stimulus defense response response to other organism response to stress response to external stimulus response to external biotic stimulus response to virus response to biotic stimulus	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR054588	Csa3, N-terminal	Domain
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR010163	CRISPR-associated CARF protein Csa3	Family
A, B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.