Annotations: 1Y9Q

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1y9qa1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Probable transcriptional regulator VC1968, N-terminal domain	Probable transcriptional regulator VC1968, N-terminal domain	(Vibrio cholerae ) [TaxId: 666 ],	SCOPe (2.08)
A	d1y9qa2	All beta proteins	Double-stranded beta-helix	RmlC-like cupins	Probable transcriptional regulator VC1968, C-terminal domain	Probable transcriptional regulator VC1968, C-terminal domain	(Vibrio cholerae ) [TaxId: 666 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Probable transcriptional regulator VC1968 N-terminal domain	8031915	4002976	SCOP2 (2022-06-29)
A	SCOP2 Family	Probable transcriptional regulator VC1968 C-terminal domain	8031916	4003243	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	lambda C1 repressor DNA-binding domain-like	8044293	3000119	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	RmlC-like cupins	8044294	3001825	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	Cupin_2	e1y9qA1	A: beta sandwiches	X: jelly-roll	H: Double-stranded beta-helix (From Topology)	T: Double-stranded beta-helix	F: Cupin_2	ECOD (1.6)
A	HTH_3_1	e1y9qA2	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: HTH_3_1	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	2.60.120.10	Mainly Beta	Sandwich	Jelly Rolls	Jelly Rolls	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07883	Cupin domain (Cupin_2)	Cupin domain	This family represents the conserved barrel domain of the 'cupin' superfamily [1] ('cupa' is the Latin term for a small barrel).	Domain
A	PF01381	Helix-turn-helix (HTH_3)	Helix-turn-helix	This large family of DNA binding helix-turn helix proteins includes Cro Swiss:P03036 and CI Swiss:P03034. Within the protein Swiss:Q5F9C2, the full protein fold incorporates a helix-turn-helix motif, but the function of this member is unlikely to be ...	This large family of DNA binding helix-turn helix proteins includes Cro Swiss:P03036 and CI Swiss:P03034. Within the protein Swiss:Q5F9C2, the full protein fold incorporates a helix-turn-helix motif, but the function of this member is unlikely to be that of a DNA-binding regulator, the function of most other members, so is not necessarily characteristic of the whole family [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	transcriptional regulator, HTH_3 family	DNA binding binding organic cyclic compound binding nucleic acid binding transcription regulator activity DNA-binding transcription factor activity cation binding ion binding metal ion binding small molecule binding	regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of cellular process cellular biosynthetic process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process organic substance metabolic process organic substance biosynthetic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process cellular metabolic process biological regulation primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process organic cyclic compound metabolic process regulation of gene expression biosynthetic process organic cyclic compound biosynthetic process metabolic process regulation of macromolecule biosynthetic process cellular process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001387	Cro/C1-type helix-turn-helix domain	Domain
A	IPR011051	RmlC-like cupin domain superfamily	Homologous Superfamily
A	IPR013096	Cupin 2, conserved barrel	Domain
A	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily
A	IPR014710	RmlC-like jelly roll fold	Homologous Superfamily

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.