Annotations: 1F39

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1f39b_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
A	d1f39a_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	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)
B		e1f39B1	A: Cloacin translocation domain	X: Cloacin translocation domain	H: Cloacin translocation domain	T: dUTPase	F:	ECOD (20:10:01)
A		e1f39A1	A: SH3	X: LexA/Signal peptidase	H: LexA/Signal peptidase	T: Peptidase_S24	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
A	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00717	Peptidase S24-like (Peptidase_S24)	Peptidase S24-like		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	REPRESSOR PROTEIN CI	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding core promoter sequence-specific DNA binding nucleic acid binding transcription regulatory region nucleic acid binding identical protein binding protein binding	latent virus replication viral process viral latency release from viral latency latency-replication decision regulation of cellular process negative regulation of biological process RNA 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 latent virus replication viral process viral latency release from viral latency latency-replication decision regulation of cellular process negative regulation of biological process RNA 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 negative regulation of metabolic process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process negative regulation of transcription by competitive promoter binding 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 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	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR015927	Peptidase S24/S26A/S26B/S26C	Domain
A, B	IPR001387	Cro/C1-type, helix-turn-helix domain	Domain
A, B	IPR039418	LexA-like	Domain
A, B	IPR036286	LexA/Signal peptidase-like superfamily	Homologous Superfamily
A, B	IPR050077	LexA repressor	Family
A, B	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.