1RI7 | pdb_00001ri7

crystal structure of a protein in the LRP/ASNC family from the hyperthermophilic archaeon Pyrococcus sp. OT3

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)
A	d1ri7a1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Lrp/AsnC-like transcriptional regulator N-terminal domain	Putative transcriptional regulator PH1519	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)
A	d1ri7a2	Alpha and beta proteins (a+b)	Ferredoxin-like	Dimeric alpha+beta barrel	Lrp/AsnC-like transcriptional regulator C-terminal domain	Putative transcriptional regulator PH1519	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Dimeric alpha+beta barrel	8056305	3000089	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Winged helix DNA-binding domain	8056304	3000034	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)
A	HTH_AsnC-type	e1ri7A1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: HTH_AsnC-type	ECOD (1.6)
A	AsnC_trans_reg	e1ri7A2	A: a+b two layers	X: Alpha-beta plaits	H: Dimeric alpha+beta barrel (From Topology)	T: Dimeric alpha+beta barrel	F: AsnC_trans_reg	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
A	3.30.70.920	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	Lrp/AsnC effector binding domain/regulation of amino acid metabolism (RAM) domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF13404	AsnC-type helix-turn-helix domain (HTH_AsnC-type)	AsnC-type helix-turn-helix domain		Domain
A	PF01037	Lrp/AsnC ligand binding domain (AsnC_trans_reg)	Lrp/AsnC ligand binding domain	The l-leucine-responsive regulatory protein (Lrp/AsnC) family is a family of similar bacterial transcription regulatory proteins. The family is named after two E. coli proteins involved in regulating amino acid metabolism. This entry corresponds to t ...	The l-leucine-responsive regulatory protein (Lrp/AsnC) family is a family of similar bacterial transcription regulatory proteins. The family is named after two E. coli proteins involved in regulating amino acid metabolism. This entry corresponds to the usually C-terminal regulatory ligand binding domain. Structurally this domain has a dimeric alpha/beta barrel fold [2]. This domain binds almost exclusively amino acids but also 4-hydroxyphenylpyruvate and kynurenine (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Putative transcriptional regulator	sequence-specific DNA binding DNA binding binding nucleic acid binding identical protein binding protein binding	response to acid chemical response to stimulus response to chemical response to amino acid	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A	IPR011991	ArsR-like helix-turn-helix domain	Domain
A	IPR019887	Transcription regulator AsnC/Lrp, ligand binding domain	Domain
A	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A	IPR000485	AsnC-type HTH domain	Domain
A	IPR011008	Dimeric alpha-beta barrel	Homologous Superfamily
A	IPR019888	Transcription regulator AsnC-like	Family

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.