Annotations: 7JVT

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth C]	SCOP2B Superfamily	LexA/Signal peptidase-like	8091063	3000103	SCOP2B (2022-06-29)
A [auth C]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8058183	3000119	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8058183	3000119	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	LexA/Signal peptidase-like	8091063	3000103	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 [auth C]	Phage_CI_C	e7jvtC1	A: beta barrels	X: SH3	H: LexA/Signal peptidase (From Topology)	T: LexA/Signal peptidase	F: Phage_CI_C	ECOD (1.6)
A [auth C]	HTH_3	e7jvtC2	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: HTH_3	ECOD (1.6)
B [auth D]	Phage_CI_C	e7jvtD1	A: beta barrels	X: SH3	H: LexA/Signal peptidase (From Topology)	T: LexA/Signal peptidase	F: Phage_CI_C	ECOD (1.6)
B [auth D]	HTH_3	e7jvtD2	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: HTH_3	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth C], B [auth D]	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
A [auth C], B [auth D]	PF16452	Bacteriophage CI repressor C-terminal domain (Phage_CI_C)	Bacteriophage CI repressor C-terminal domain	The C-terminal domain of the CI repressor functions in oligomer formation [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth C], B [auth D]	Repressor protein CI	DNA binding binding organic cyclic compound binding nucleic acid binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding double-stranded DNA binding core promoter sequence-specific DNA binding transcription regulatory region nucleic acid binding identical protein binding protein binding	regulation of cellular process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of cellular process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process regulation of primary metabolic process negative regulation of RNA biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process regulation of RNA metabolic process negative regulation of cellular process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of DNA-templated transcription regulation of biological process cellular metabolic process negative regulation of 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 negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process cellular 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 component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular component organization or biogenesis latent virus replication viral process viral latency release from viral latency latency-replication decision negative regulation of transcription by competitive promoter binding maintenance of viral latency viral gene expression regulation of viral process regulation of viral transcription positive regulation of viral process positive regulation of biological process viral transcription positive regulation of viral transcription	-
C [auth E]	OL1 bottom	-	-	-
D [auth F]	OL1 top	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth C], B [auth D]	IPR032499	Bacteriophage CI repressor, C-terminal	Domain
A [auth C], B [auth D]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily
A [auth C], B [auth D]	IPR010744	Bacteriophage CI repressor, N-terminal	Domain
A [auth C], B [auth D]	IPR015927	Peptidase S24/S26A/S26B/S26C	Domain
A [auth C], B [auth D]	IPR001387	Cro/C1-type helix-turn-helix domain	Domain
A [auth C], B [auth D]	IPR039418	LexA-like	Domain
A [auth C], B [auth D]	IPR036286	LexA/Signal peptidase-like superfamily	Homologous Superfamily
A [auth C], B [auth D]	IPR050077	LexA repressor	Family
A [auth C], B [auth D]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily

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.