Annotations: 3OQN

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth S]	SCOP2B Superfamily	HPr-like	8035725	3000259	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	HPr-like	8035725	3000259	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	PF00356	e3oqnA5	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF00356	ECOD (1.6)
A	PF13377	e3oqnA3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Periplasmic binding protein-like I	F: PF13377	ECOD (1.6)
C	PF00356	e3oqnC5	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF00356	ECOD (1.6)
C	PF13377	e3oqnC3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: Periplasmic binding protein-like I	F: PF13377	ECOD (1.6)
B [auth S]	PF00381	e3oqnS1	A: a+b two layers	X: HPr-like (From Topology)	H: HPr-like (From Topology)	T: HPr-like	F: PF00381	ECOD (1.6)
D	PF00381	e3oqnD1	A: a+b two layers	X: HPr-like (From Topology)	H: HPr-like (From Topology)	T: HPr-like	F: PF00381	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
C	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
C	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
B [auth S]	3.30.1340.10	Alpha Beta	2-Layer Sandwich	Histidine-containing Protein	Chain: A	CATH (4.3.0)
D	3.30.1340.10	Alpha Beta	2-Layer Sandwich	Histidine-containing Protein	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF13377	Periplasmic binding protein-like domain (Peripla_BP_3)	Periplasmic binding protein-like domain	This domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain acts as a sensor binding small molecule liga ...	This domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain acts as a sensor binding small molecule ligands that the DNA-binding domain responds to. This domain recognises Sugars, sugar phosphates, sugar acids and purines (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain
A, C	PF00356	Bacterial regulatory proteins, lacI family (LacI)	Bacterial regulatory proteins, lacI family	-	Domain
B [auth S], D	PF00381	PTS HPr component phosphorylation site (PTS-HPr)	PTS HPr component phosphorylation site	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Catabolite control protein A	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding organic cyclic compound binding nucleic acid binding transcription regulatory region nucleic acid binding transcription regulator activity DNA-binding transcription factor activity DNA-binding transcription activator activity DNA-binding transcription repressor activity	regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription regulation of RNA metabolic process organic substance biosynthetic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process negative regulation of RNA metabolic process cellular biosynthetic process RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process organic substance metabolic process negative regulation of cellular process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process negative regulation of biosynthetic process cellular process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of macromolecule metabolic process positive regulation of nucleobase-containing compound metabolic process positive regulation of RNA metabolic process positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of cellular metabolic process positive regulation of biosynthetic process positive regulation of cellular process positive regulation of RNA biosynthetic process positive regulation of cellular biosynthetic process	protein-containing complex protein-DNA complex
B [auth S], D	Phosphocarrier protein HPr	-	import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system transport organic substance transport import across plasma membrane carbohydrate import across plasma membrane carbohydrate transport establishment of localization transmembrane transport localization cellular process carbohydrate transmembrane transport response to nutrient levels regulation of response to nutrient levels import into cell phosphoenolpyruvate-dependent sugar phosphotransferase system transport organic substance transport import across plasma membrane carbohydrate import across plasma membrane carbohydrate transport establishment of localization transmembrane transport localization cellular process carbohydrate transmembrane transport response to nutrient levels regulation of response to nutrient levels regulation of biological process response to stimulus regulation of response to stimulus biological regulation regulation of carbohydrate utilization carbohydrate utilization	intracellular anatomical structure cytoplasm cellular anatomical entity
E	5'-D(TPTPGPAPAPAPGPCPGPGPTPAPCPCPAPT)-3'	-	-	-
F [auth B]	5'-D(APTPGPGPTPAPCPCPGPCPTPTPTPCPAPA)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR046335	Transcriptional regulator LacI/GalR-like, sensor domain	Domain
A, C	IPR028082	Periplasmic binding protein-like I	Homologous Superfamily
A, C	IPR006377	Catabolite control protein A	Family
A, C	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily
A, C	IPR000843	LacI-type HTH domain	Domain
B [auth S], D	IPR000032	Phosphocarrier protein HPr-like	Domain
B [auth S], D	IPR002114	Phosphotransferase system, HPr serine phosphorylation site	PTM
B [auth S], D	IPR035895	HPr-like superfamily	Homologous Superfamily
B [auth S], D	IPR001020	Phosphotransferase system, HPr histidine phosphorylation site	PTM

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
B [auth S], D	SEP	Parent Component: SER RESID: AA0037 PSI-MOD : O-phospho-L-serine MOD:00046

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.