Structure of PDB 1o23 Chain B Binding Site BS02

Receptor Information

>1o23 Chain B (length=272) Species: 9913 (Bos taurus)

LTACPEESPLLVGPMLIEFNIPVDLKLVEQQNPKVKLGGRYTPMDCISPH
KVAIIIPFRNRQEHLKYWLYYLHPILQRQQLDYGIYVINQAGESMFNRAK
LLNVGFKEALKDYDYNCFVFSDVDLIPMNDHNTYRCFSQPRHISVAMDKF
GFSLPYVQYFGGVSALSKQQFLSINGFPNNYWGWGGEDDDIYNRLAFRGM
SVSRPNAVIGKCRMIRHSRDKKNEPNPQRFDRIAHTKETMLSDGLNSLTY
MVLEVQRYPLYTKITVDIGTPS

Ligand information

• Ligand ID: UPG
• InChI: InChI=1S/C15H24N2O17P2/c18-3-5-8(20)10(22)12(24)14(32-5)33-36(28,29)34-35(26,27)30-4-6-9(21)11(23)13(31-6)17-2-1-7(19)16-15(17)25/h1-2,5-6,8-14,18,20-24H,3-4H2,(H,26,27)(H,28,29)(H,16,19,25)/t5-,6-,8-,9-,10+,11-,12-,13-,14-/m1/s1
• InChIKey: HSCJRCZFDFQWRP-JZMIEXBBSA-N
• SMILES:
  CACTVS 3.370: OC[C@H]1O[C@H](O[P](O)(=O)O[P](O)(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2O)N3C=CC(=O)NC3=O)[C@H](O)[C@@H](O)[C@@H]1O
  ACDLabs 12.01: O=C1C=CN(C(=O)N1)C2OC(C(O)C2O)COP(=O)(OP(=O)(OC3OC(C(O)C(O)C3O)CO)O)O
  CACTVS 3.370: OC[CH]1O[CH](O[P](O)(=O)O[P](O)(=O)OC[CH]2O[CH]([CH](O)[CH]2O)N3C=CC(=O)NC3=O)[CH](O)[CH](O)[CH]1O
  OpenEye OEToolkits 1.7.6: C1=CN(C(=O)NC1=O)[C@H]2[C@@H]([C@@H]([C@H](O2)CO[P@](=O)(O)O[P@](=O)(O)O[C@@H]3[C@@H]([C@H]([C@@H]([C@H](O3)CO)O)O)O)O)O
  OpenEye OEToolkits 1.7.6: C1=CN(C(=O)NC1=O)C2C(C(C(O2)COP(=O)(O)OP(=O)(O)OC3C(C(C(C(O3)CO)O)O)O)O)O
• Formula: C15 H24 N2 O17 P2
• Name: URIDINE-5'-DIPHOSPHATE-GLUCOSE;
  URIDINE-5'-MONOPHOSPHATE GLUCOPYRANOSYL-MONOPHOSPHATE ESTER
• ChEMBL: CHEMBL375951
• DrugBank: DB01861
• ZINC: ZINC000008215472
• PDB chain: 1o23 Chain B Residue 809

Receptor-Ligand Complex Structure

Structure summary

• PDB: 1o23 Alpha-Lactalbumin (La) Stimulates Milk Beta-1,4-Galactosyltransferase I (Beta 4Gal-T1) to Transfer Glucose from Udp-Glucose to N-Acetylglucosamine. Crystal Structure of Beta 4Gal-T1 X La Complex with Udp-Glc.
• Resolution: 2.32 Å
• Binding residue (original residue number in PDB): P187 F188 R189 R191 F226 R228 D252 V253 D254 Y289 G292 W314 E317 D318 M344 H347 D350
• Binding residue (residue number reindexed from 1): P57 F58 R59 R61 F96 R98 D122 V123 D124 Y159 G162 W184 E187 D188 M214 H217 D220
• Annotation score: 4

Enzymatic activity

• Catalytic site (original residue number in PDB): D252 D254 W314 E317 D318 M344 H347 R349
• Catalytic site (residue number reindexed from 1): D122 D124 W184 E187 D188 M214 H217 R219
• Enzyme Commision number: 2.4.1.-
  2.4.1.22: lactose synthase.
  2.4.1.275: neolactotriaosylceramide beta-1,4-galactosyltransferase.
  2.4.1.38: beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase.
  2.4.1.90: N-acetyllactosamine synthase.

Gene Ontology

Molecular Function

• GO:0016757 glycosyltransferase activity

Biological Process

• GO:0005975 carbohydrate metabolic process

External links

• PDB: RCSB:1o23, PDBe:1o23, PDBj:1o23
• PDBsum: 1o23
• PubMed: 11485999
• UniProt: P08037|B4GT1_BOVIN Beta-1,4-galactosyltransferase 1 (Gene Name=B4GALT1)