1O23

CRYSTAL STRUCTURE OF LACTOSE SYNTHASE IN THE PRESENCE OF UDP-GLUCOSE

Structural Biology Knowledgebase: 1O23 SBKB.org


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.265
  • R-Value Work: 0.201

Literature

Macromolecules
Sequence Display for 1O23

Classification: TRANSFERASE ACTIVATOR / TRANSFERASE

Total Structure Weight: 96450.31

Macromolecule Entities
Molecule Chains Length Organism Details
ALPHA-LACTALBUMIN A, C 123 Mus musculus Fragment: REGULATORY SUBUNIT OF LACTOSE SYNTHASE
Gene Name(s): Lalba
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG
BETA-1,4-GALACTOSYLTRANSFERASE B, D 286 Bos taurus Fragment: RESIDUES 57-329
Gene Name(s): B4GALT1 Gene View GALT Gene View GGTB2
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 6 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
UPG
Query on UPG

B, D URIDINE-5'-DIPHOSPHATE-GLUCOSE
URIDINE-5'-MONOPHOSPHATE GLUCOPYRANOSYL-MONOPHOSPHATE ESTER (Synonym)
C15 H24 N2 O17 P2
HSCJRCZFDFQWRP-JZMIEXBBSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
UDP
Query on UDP

B, D URIDINE-5'-DIPHOSPHATE
C9 H14 N2 O12 P2
XCCTYIAWTASOJW-XVFCMESISA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
MES
Query on MES

A 2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
PG4
Query on PG4

A, C TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
MN
Query on MN

B, D MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
CA
Query on CA

A, C CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.32 Å
  • R-Value Free: 0.265
  • R-Value Work: 0.201
  • Space Group: P 1 21 1
  • Electron Density Server: EDS EDS

Unit Cell:

Length (Å) Angle (°)
a = 55.54 α = 90.00
b = 99.38 β = 104.09
c = 102.57 γ = 90.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2003-01-29
  • Released Date: 2003-02-25
  • Deposition author(s): Ramakrishnan, B., Shah, P.S., Qasba, P.K.
  • Previous versions: 1JNC 1NT7

Revision History

  • 2013-05-08
    Type: Non-polymer description | Details: Replace ligand GUD with UPG
  • 2011-07-13
    Type: Version format compliance | Details: compliance with PDB Exchange Dictionary V4