2R1J

Crystal Structure of the P22 c2 Repressor protein in complex with the synthetic operator 9T

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth L]	d2r1jl_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Phage repressors	P22 C2 repressor, DNA-binding domain	(Lederbergvirus P22 ) [TaxId: 10754 ],	SCOPe (2.08)
D [auth R]	d2r1jr_	All alpha proteins	lambda repressor-like DNA-binding domains	lambda repressor-like DNA-binding domains	Phage repressors	P22 C2 repressor, DNA-binding domain	(Lederbergvirus P22 ) [TaxId: 10754 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth L]	SCOP2 Family	XRE-like regulatory proteins	8017470	4000362	SCOP2 (2022-06-29)
C [auth L]	SCOP2 Superfamily	lambda C1 repressor DNA-binding domain-like	8057722	3000119	SCOP2 (2022-06-29)
D [auth R]	SCOP2B Superfamily	lambda C1 repressor DNA-binding domain-like	8057722	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 L]	PF01381	e2r1jL1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF01381	ECOD (1.6)
D [auth R]	PF01381	e2r1jR1	A: alpha arrays	X: HTH	H: HTH	T: tetra-helical, lambda repressor-like	F: PF01381	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth L], D [auth R]	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B]	5'-D(DCPDAPDTPDTPDTPDAPDAPDGPDAPDTPDAPDTPDCPDTPDTPDAPDAPDAPDTPDA)-3'	-	-	-
C [auth L], D [auth R]	Repressor protein C2	DNA binding binding organic cyclic compound binding nucleic acid binding	-	-
B [auth A]	5'-D(DTPDAPDTPDTPDTPDAPDAPDGPDAPDTPDAPDTPDCPDTPDTPDAPDAPDAPDTPDG)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth L], D [auth R]	IPR015927	Peptidase S24/S26A/S26B/S26C	Domain
C [auth L], D [auth R]	IPR001387	Cro/C1-type helix-turn-helix domain	Domain
C [auth L], D [auth R]	IPR039418	LexA-like	Domain
C [auth L], D [auth R]	IPR036286	LexA/Signal peptidase-like superfamily	Homologous Superfamily
C [auth L], D [auth R]	IPR010982	Lambda repressor-like, DNA-binding domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.