1A9Z Epimerase date Apr 14, 1998
title Udp-Galactose 4-Epimerase Mutant S124ay149f Complexed With Galactose
authors J.B.Thoden, H.M.Holden
compound source
Molecule: Udp-Galactose 4-Epimerase
Chain: A
Engineered: Yes
Mutation: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: P 32 2 1
R_factor 0.188 R_Free NULL
length a length b length c angle alpha angle beta angle gamma
83.900 83.900 108.100 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.90 Å
ligand NA, NAD, PGE, UPG enzyme Isomerase E.C. BRENDA
related structures by homologous chain: 1KVU, 1LRJ

Primary referenceDramatic differences in the binding of UDP-galactose and UDP-glucose to UDP-galactose 4-epimerase from Escherichia coli., Thoden JB, Holden HM, Biochemistry 1998 Aug 18;37(33):11469-77. PMID:9708982
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (73 Kb) [Save to disk]
  • Biological Unit Coordinates (1a9z.pdb1.gz) 129 Kb
  • LPC: Ligand-Protein Contacts for 1A9Z
  • CSU: Contacts of Structural Units for 1A9Z
  • Likely Quarternary Molecular Structure file(s) for 1A9Z
  • Retrieve 1A9Z in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1A9Z from S2C, [Save to disk]
  • View 1A9Z in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1A9Z
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1A9Z, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1a9z__, region [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1a9z_A] [1a9z]
  • SWISS-PROT database: [P09147]
  • Domain organization of [GALE_ECOLI] by SWISSPFAM
  • Other resources with information on 1A9Z
  • Community annotation for 1A9Z at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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