Annotations: 1KCA

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
H	d1kcah_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
G	d1kcag_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
F	d1kcaf_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
E	d1kcae_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
D	d1kcad_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
C	d1kcac_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
B	d1kcab_	All beta proteins	LexA/Signal peptidase	LexA/Signal peptidase	LexA-related	lambda repressor C-terminal domain	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
A	d1kcaa_	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)
H	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	LexA/Signal peptidase-like	8058185	3000103	SCOP2B (2022-06-29)
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)
H	PDZ_2	e1kcaH1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
G	PDZ_2	e1kcaG1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
F	PDZ_2	e1kcaF1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
E	PDZ_2	e1kcaE1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
D	PDZ_2	e1kcaD1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
C	PDZ_2	e1kcaC1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
B	PDZ_2	e1kcaB1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)
A	PDZ_2	e1kcaA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: PDZ_2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
G	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
F	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
E	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
D	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
C	2.10.109.10	Mainly Beta	Ribbon	Umud Fragment, subunit A	Umud Fragment, subunit A	CATH (4.3.0)
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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	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 maintenance of viral latency viral gene expression regulation of biological process regulation of viral process regulation of viral transcription positive regulation of viral process biological regulation positive regulation of biological process viral transcription latent virus replication viral process viral latency release from viral latency latency-replication decision maintenance of viral latency viral gene expression regulation of biological process regulation of viral process regulation of viral transcription positive regulation of viral process biological regulation 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, C, D, E A, B, C, D, E, F, G, H	IPR015927	Peptidase S24/S26A/S26B/S26C	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR001387	Cro/C1-type, helix-turn-helix domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR039418	LexA-like	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR036286	LexA/Signal peptidase-like superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F, G, H	IPR050077	LexA repressor	Family
A, B, C, D, E A, B, C, D, E, F, G, H	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.