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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
D [auth A]d2pe5a1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains GalR/LacI-like bacterial regulator Lac repressor (LacR), N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
D [auth A]d2pe5a2 Alpha and beta proteins (a/b) Periplasmic binding protein-like I Periplasmic binding protein-like I L-arabinose binding protein-like Lac-repressor (lacR) core (C-terminal domain) (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
E [auth B]d2pe5b1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains GalR/LacI-like bacterial regulator Lac repressor (LacR), N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
E [auth B]d2pe5b2 Alpha and beta proteins (a/b) Periplasmic binding protein-like I Periplasmic binding protein-like I L-arabinose binding protein-like Lac-repressor (lacR) core (C-terminal domain) (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
F [auth C]d2pe5c1 All alpha proteins lambda repressor-like DNA-binding domains lambda repressor-like DNA-binding domains GalR/LacI-like bacterial regulator Lac repressor (LacR), N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
F [auth C]d2pe5c2 Alpha and beta proteins (a/b) Periplasmic binding protein-like I Periplasmic binding protein-like I L-arabinose binding protein-like Lac-repressor (lacR) core (C-terminal domain) (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
D [auth A]SCOP2B Superfamilylambda C1 repressor DNA-binding domain-like 8037209 3000119 SCOP2B (2022-06-29)
D [auth A]SCOP2B SuperfamilyType 1 solute binding protein-like 8037462 3000125 SCOP2B (2022-06-29)
E [auth B]SCOP2B Superfamilylambda C1 repressor DNA-binding domain-like 8037209 3000119 SCOP2B (2022-06-29)
E [auth B]SCOP2B SuperfamilyType 1 solute binding protein-like 8037462 3000125 SCOP2B (2022-06-29)
F [auth C]SCOP2B Superfamilylambda C1 repressor DNA-binding domain-like 8037209 3000119 SCOP2B (2022-06-29)
F [auth C]SCOP2B SuperfamilyType 1 solute binding protein-like 8037462 3000125 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
D [auth A]LacIe2pe5A3 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: LacIECOD (1.6)
D [auth A]Peripla_BP_3e2pe5A2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_3ECOD (1.6)
D [auth A]Peripla_BP_1_1st_1e2pe5A1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_1_1st_1ECOD (1.6)
E [auth B]LacIe2pe5B3 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: LacIECOD (1.6)
E [auth B]Peripla_BP_3e2pe5B2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_3ECOD (1.6)
E [auth B]Peripla_BP_1_1st_1e2pe5B1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_1_1st_1ECOD (1.6)
F [auth C]LacIe2pe5C3 A: alpha arraysX: HTHH: HTHT: tetra-helical, lambda repressor-likeF: LacIECOD (1.6)
F [auth C]Peripla_BP_3e2pe5C1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_3ECOD (1.6)
F [auth C]Peripla_BP_1_1st_1e2pe5C2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Periplasmic binding protein-like IF: Peripla_BP_1_1st_1ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
D [auth A],
E [auth B],
F [auth C]
PF13377Periplasmic binding protein-like domain (Peripla_BP_3)Periplasmic binding protein-like domainThis domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain acts as a sensor binding small molecule liga ...This domain is found in a variety of transcriptional regulatory proteins. It is related to bacterial periplasmic binding proteins, although this domain is unlikely to be found in the periplasm. This domain acts as a sensor binding small molecule ligands that the DNA-binding domain responds to. This domain recognises Sugars, sugar phosphates, sugar acids and purines (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).
Domain
D [auth A],
E [auth B],
F [auth C]
PF00356Bacterial regulatory proteins, lacI family (LacI)Bacterial regulatory proteins, lacI family- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth D],
B [auth E],
C [auth F]
DNA (5'-D(*DAP*DAP*DTP*DTP*DGP*DTP*DGP*DAP*DGP*DCP*DGP*DCP*DTP*DCP*DAP*DCP*DAP*DAP*DTP*DT)-3')---
D [auth A],
E [auth B],
F [auth C]
Lactose operon repressor