1PER | pdb_00001per

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth L]	d1perl_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Phage repressors	434 C1 repressor, DNA-binding domain	(Phage 434 ) [TaxId: 10712 ],	SCOPe (2.08)
D [auth R]	d1perr_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Phage repressors	434 C1 repressor, DNA-binding domain	(Phage 434 ) [TaxId: 10712 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth L]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8057719	3000119	SCOP2B (2022-06-29)
D [auth R]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8057719	3000119	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C [auth L]	Phage_CII	e1perL1	A: beta barrels	X: ETN0001 domain-like	H: YozE-like	T: Ribbon-helix-helix	F: Phage_CII	ECOD (v294.2)
D [auth R]	Phage_CII	e1perR1	A: beta barrels	X: ETN0001 domain-like	H: YozE-like	T: Ribbon-helix-helix	F: Phage_CII	ECOD (v294.2)

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

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DNA (5'-D(APAPGPTPAPCPAPGPTPTPTPTPTPCPTPTPG PTPAPT)-3')	-	-	-
B	DNA (5'-D(TPAPTPAPCPAPAPGPAPAPAPAPAPCPTPGPT PAPCPT)-3')	-	-	-
C [auth L], D [auth R]	PROTEIN (434 REPRESSOR)	DNA binding binding nucleic acid binding	RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process cellular process macromolecule metabolic process	-

Chains	Accession	Name	Type
C [auth L], D [auth R]	IPR001387	Cro/C1-type, helix-turn-helix domain	Domain
C [auth L], D [auth R]	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.