Annotations: 1ZS4

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth A]	d1zs4a1	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Bacteriophage CII protein	Regulatory protein cII	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
C [auth A]	d1zs4a2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
D [auth B]	d1zs4b2	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Bacteriophage CII protein	Regulatory protein cII	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
D [auth B]	d1zs4b3	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
E [auth C]	d1zs4c_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Bacteriophage CII protein	Regulatory protein cII	(Lambdavirus lambda ) [TaxId: 10710 ],	SCOPe (2.08)
F [auth D]	d1zs4d_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Bacteriophage CII protein	Regulatory protein cII	(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)
C [auth A]	SCOP2 Family	Bacteriophage CII protein-like	8023832	4001277	SCOP2 (2022-06-29)
C [auth A]	SCOP2 Superfamily	lambda C1 repressor DNA-binding domain-like	8036212	3000119	SCOP2 (2022-06-29)
D [auth B]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8036212	3000119	SCOP2B (2022-06-29)
E [auth C]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8036212	3000119	SCOP2B (2022-06-29)
F [auth D]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8036212	3000119	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)
C [auth A]	PF05269	e1zs4A1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF05269	ECOD (1.6)
D [auth B]	PF05269	e1zs4B1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF05269	ECOD (1.6)
E [auth C]	PF05269	e1zs4C1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF05269	ECOD (1.6)
F [auth D]	PF05269	e1zs4D1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF05269	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth A]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
D [auth B]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
E [auth C]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)
F [auth D]	1.10.260.40	Mainly Alpha	Orthogonal Bundle	434 Repressor (Amino-terminal Domain)	lambda repressor-like DNA-binding domains	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A], D [auth B], E [auth C], F [auth D]	PF05269	Bacteriophage CII protein (Phage_CII)	Bacteriophage CII protein	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth U]	DNA - 27mer	-	-	-
B [auth T]	DNA - 27mer	-	-	-
C [auth A], D [auth B], E [auth C], F [auth D]	Regulatory protein CII	DNA binding binding organic cyclic compound binding nucleic acid 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 viral latency viral process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B], E [auth C], F [auth D]	IPR007933	Transcription activator CII	Family
C [auth A], D [auth B], E [auth C], F [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 R01GM133198.