Annotations: 1RL9

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1rl9a1	All alpha proteins	Guanido kinase N-terminal domain	Guanido kinase N-terminal domain	Guanido kinase N-terminal domain	Arginine kinase, N-domain	Atlantic horseshoe crab (Limulus polyphemus ) [TaxId: 6850 ],	SCOPe (2.08)
A	d1rl9a2	Alpha and beta proteins (a+b)	Glutamine synthetase/guanido kinase	Glutamine synthetase/guanido kinase	Guanido kinase catalytic domain	Arginine kinase, C-terminal domain	Atlantic horseshoe crab (Limulus polyphemus ) [TaxId: 6850 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Guanido kinase catalytic domain	8026545	4002008	SCOP2 (2022-06-29)
A	SCOP2 Family	Guanido kinase N-terminal domain	8026544	4001090	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Glutamine synthetase/guanido kinase	8038924	3000676	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Guanido kinase N-terminal domain	8038923	3000726	SCOP2 (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	PF02807	e1rl9A1	A: alpha arrays	X: Guanido kinase-N (From Topology)	H: Guanido kinase-N (From Topology)	T: Guanido kinase-N	F: PF02807	ECOD (1.6)
A	PF00217	e1rl9A2	A: a+b two layers	X: Glutamine synthetase-like	H: Glutamine synthetase/guanido kinase (From Topology)	T: Glutamine synthetase/guanido kinase	F: PF00217	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.135.10	Mainly Alpha	Orthogonal Bundle	Transferase Creatine Kinase	Chain A, domain 1	CATH (4.3.0)
A	3.30.590.10	Alpha Beta	2-Layer Sandwich	Creatine Kinase	Chain A, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
A	PF02807	ATP:guanido phosphotransferase, N-terminal domain (ATP-gua_PtransN)	ATP:guanido phosphotransferase, N-terminal domain	The N-terminal domain has an all-alpha fold.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Arginine kinase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound 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 amino acid kinase activity arginine kinase activity	phosphorylation cellular metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process phosphocreatine metabolic process organonitrogen compound metabolic process phosphagen metabolic process phosphocreatine biosynthetic process organonitrogen compound biosynthetic process cellular modified amino acid metabolic process organic substance metabolic process phosphagen biosynthetic process phosphorylation cellular metabolic process phosphate-containing compound metabolic process metabolic process cellular process phosphorus metabolic process phosphocreatine metabolic process organonitrogen compound metabolic process phosphagen metabolic process phosphocreatine biosynthetic process organonitrogen compound biosynthetic process cellular modified amino acid metabolic process organic substance metabolic process phosphagen biosynthetic process biosynthetic process organophosphate metabolic process cellular modified amino acid biosynthetic process organophosphate biosynthetic process organic substance biosynthetic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR022415	ATP:guanido phosphotransferase active site	Active Site
A	IPR022413	ATP:guanido phosphotransferase, N-terminal	Domain
A	IPR022414	ATP:guanido phosphotransferase, catalytic domain	Domain
A	IPR036802	ATP:guanido phosphotransferase, N-terminal domain superfamily	Homologous Superfamily
A	IPR014746	Glutamine synthetase/guanido kinase, catalytic domain	Homologous Superfamily
A	IPR000749	ATP:guanido phosphotransferase	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.