Annotations: 6FH2

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	UNK_F_TYPE	e6fh2B2	A: alpha arrays	X: Guanido kinase-N (From Topology)	H: Guanido kinase-N (From Topology)	T: Guanido kinase-N	F: UNK_F_TYPE	ECOD (1.6)
B	ATP-gua_Ptrans	e6fh2B1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: ATP-gua_Ptrans	ECOD (1.6)
A	UNK_F_TYPE	e6fh2A2	A: alpha arrays	X: Guanido kinase-N (From Topology)	H: Guanido kinase-N (From Topology)	T: Guanido kinase-N	F: UNK_F_TYPE	ECOD (1.6)
A	ATP-gua_Ptrans	e6fh2A1	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: ATP-gua_Ptrans	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.590.10	Alpha Beta	2-Layer Sandwich	Creatine Kinase	Chain A, domain 2	CATH (utative)
A	3.30.590.10	Alpha Beta	2-Layer Sandwich	Creatine Kinase	Chain A, domain 2	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00217	ATP:guanido phosphotransferase, C-terminal catalytic domain (ATP-gua_Ptrans)	ATP:guanido phosphotransferase, C-terminal catalytic domain	The substrate binding site is located in the cleft between N and C-terminal domains, but most of the catalytic residues are found in the larger C-terminal domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Protein-arginine kinase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding creatine kinase activity kinase activity transferase activity catalytic activity phosphotransferase activity, nitrogenous group as acceptor transferase activity, transferring phosphorus-containing groups catalytic activity, acting on a protein protein kinase activity phosphotransferase activity, alcohol group as acceptor	phosphocreatine metabolic process phosphocreatine biosynthetic process modified amino acid biosynthetic process modified amino acid metabolic process phosphagen biosynthetic process biosynthetic process organophosphate metabolic process organophosphate biosynthetic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR022415	ATP:guanido phosphotransferase active site	Active Site
A, B	IPR022414	ATP:guanido phosphotransferase, catalytic domain	Domain
A, B	IPR014746	Glutamine synthetase/guanido kinase, catalytic domain	Homologous Superfamily
A, B	IPR023660	Protein arginine kinase	Family
A, B	IPR000749	ATP:guanido phosphotransferase	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 R01GM157729.