9HI2 | pdb_00009hi2

STRUCTURE OF HUMAN UDP-GALACTOSE 4-EPIMERASE IN COMPLEX WITH COVALENT COMPOUND WBC10

• PDB DOI: https://doi.org/10.2210/pdb9HI2/pdb

• Classification: ISOMERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-11-22 Released: 2025-12-03 
• Deposition Author(s): Mouilleron, S., Schumann, B., Browne, W., Purkiss, A., Weckwerth, T., Ogrodowicz, R., Prema, R., Kunzelmann, S., Roustan, C.
• Funding Organization(s): Engineering and Physical Sciences Research Council, The Francis Crick Institute, Wellcome Trust

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.37 Å
• R-Value Free: 
  0.174 (Depositor), 0.178 (DCC) 
• R-Value Work: 
  0.141 (Depositor), 0.150 (DCC) 
• R-Value Observed: 
  0.142 (Depositor) 

Starting Model: experimental

Literature

Identification of Novel Inhibitors of Human UDP-Galactose-4-Epimerase (GalE) by Fragment-Based Lead Discovery

Browne, W., Schumann, B., Purkiss, A., Weckwerth, T., Ogrodowicz, R., Prema, R., Kunzelmann, S., Roustan, C., Mouilleron, S.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 39.34 kDa 
• Atom Count: 3,059 
• Modeled Residue Count: 344 
• Deposited Residue Count: 348 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UDP-glucose 4-epimerase	A	348	Homo sapiens	Mutation(s): 0  Gene Names: GALE EC: 5.1.3.2 (PDB Primary Data), 5.1.3.7 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q14376 (Homo sapiens) Explore Q14376  Go to UniProtKB:  Q14376
PHAROS:  Q14376 GTEx:  ENSG00000117308

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAI	B [auth A]	1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE C21 H29 N7 O14 P2 BOPGDPNILDQYTO-NNYOXOHSSA-N
A1IU6 (Subject of Investigation/LOI)	C [auth A]	3-[[(5-cyclobutyl-1,2-oxazol-3-yl)carbamoylamino]methyl]benzenesulfonyl fluoride C15 H16 F N3 O4 S UCNLFXFYUCPVKR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.37 Å
• R-Value Free:  0.174 (Depositor), 0.178 (DCC) 
• R-Value Work:  0.141 (Depositor), 0.150 (DCC) 
• R-Value Observed: 0.142 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.04	α = 90
b = 114.14	β = 90
c = 130.38	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
DIALS	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-03 
Deposition Author(s): Mouilleron, S., Schumann, B., Browne, W., Purkiss, A., Weckwerth, T., Ogrodowicz, R., Prema, R., Kunzelmann, S., Roustan, C.

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Funding Organization	Location	Grant Number
Engineering and Physical Sciences Research Council	United Kingdom	EP/S023518/1
The Francis Crick Institute	United Kingdom	CC2127
The Francis Crick Institute	United Kingdom	CC2127
Wellcome Trust	United Kingdom	CC2127

Revision History  

• Version 1.0: 2025-12-03
  Type: Initial release