Annotations: 3N5B

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	PipX-like	8047163	4005478	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	PipX-like	8092204	3002570	SCOP2 (2022-06-29)
A	SCOP2 Family	Prokaryotic signal transducing protein	8074408	4001256	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	GlnB-like	8074409	3001165	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)
B		e3n5bB1	A: Globin-like	X: Globin-like	H: Globin-like	T: Cellulase	F:	ECOD (20:10:01)
A		e3n5bA1	A: Retrovirus capsid protein	X: Retrovirus capsid protein N-terminal domain	H: PTS-regulatory domain, PRD	T: P-II	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.30.30.660	Mainly Beta	Roll	SH3 type barrels.	Protein of unknown function (DUF3539)	CATH (4.3.0)
B	6.10.250.870	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
A	3.30.70.120	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF12058	PII-interacting protein X (PipX)	PII-interacting protein X	-	Family
A	PF00543	Nitrogen regulatory protein P-II (P-II)	Nitrogen regulatory protein P-II	P-II modulates the activity of glutamine synthetase. It is a tetrameric protein encoded by the glnB gene, a component of the adenylation cascade involved in the regulation of GS activity [1,2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Asr0485 protein	-	-	-
A	Nitrogen regulatory protein P-II	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 enzyme regulator activity molecular function regulator activity	response to nutrient levels regulation of response to nutrient levels regulation of biological process response to stimulus homeostatic process nitrogen utilization biological regulation regulation of nitrogen utilization cellular homeostasis chemical homeostasis regulation of response to stimulus intracellular nitrogen homeostasis intracellular chemical homeostasis	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR021926	PII-interacting protein X, cyanobacteria	Family
A	IPR015867	Nitrogen regulatory protein PII/ATP phosphoribosyltransferase, C-terminal	Homologous Superfamily
A	IPR011322	Nitrogen regulatory PII-like, alpha/beta	Homologous Superfamily
A	IPR002187	Nitrogen regulatory protein PII	Family
A	IPR002332	Nitrogen regulatory protein P-II, urydylation site	PTM
A	IPR017918	Nitrogen regulatory protein PII, conserved site	Conserved Site

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.