2OKF

CRYSTAL STRUCTURE OF A FDXN ELEMENT EXCISION CONTROLLING FACTOR PROTEIN (AVA_3312) FROM ANABAENA VARIABILIS AT 1.60 A RESOLUTION

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
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: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2okfa1	Alpha and beta proteins (a/b)	Restriction endonuclease-like	Restriction endonuclease-like	XisH-like	FdxN element excision controlling factor protein	(Trichormus variabilis ) [TaxId: 264691 ],	SCOPe (2.08)
B	d2okfb_	Alpha and beta proteins (a/b)	Restriction endonuclease-like	Restriction endonuclease-like	XisH-like	FdxN element excision controlling factor protein	(Trichormus variabilis ) [TaxId: 264691 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	XisH-like	8022717	4002246	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Restriction endonuclease-like	8035097	3000104	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Restriction endonuclease-like	8035097	3000104	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	PF08814	e2okfA1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PF08814	ECOD (1.6)
B	PF08814	e2okfB1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PF08814	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
B	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF08814	XisH protein (XisH)	XisH protein	The fdxN element, along with two other DNA elements, is excised from the chromosome during heterocyst differentiation in cyanobacteria. The xisH as well as the xisF and xisI genes are required [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	FdxN element excision controlling factor protein	binding organic cyclic compound binding nucleic acid binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR011335	Restriction endonuclease type II-like	Homologous Superfamily
A, B	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A, B	IPR014919	XisH protein	Family

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 R01GM133198.