4ESW

Crystal structure of C. albicans Thi5 H66G mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.162 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Thiamin pyrimidine biosynthesis in Candida albicans : a remarkable reaction between histidine and pyridoxal phosphate.

Lai, R.Y.Huang, S.Fenwick, M.K.Hazra, A.Zhang, Y.Rajashankar, K.Philmus, B.Kinsland, C.Sanders, J.M.Ealick, S.E.Begley, T.P.

(2012) J.Am.Chem.Soc. 134: 9157-9159

  • DOI: 10.1021/ja302474a
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In Saccharomyces cerevisiae , thiamin pyrimidine is formed from histidine and pyridoxal phosphate (PLP). The origin of all of the pyrimidine atoms has been previously determined using labeling studies and suggests that the pyrimidine is formed using ...

    In Saccharomyces cerevisiae , thiamin pyrimidine is formed from histidine and pyridoxal phosphate (PLP). The origin of all of the pyrimidine atoms has been previously determined using labeling studies and suggests that the pyrimidine is formed using remarkable chemistry that is without chemical or biochemical precedent. Here we report the overexpression of the closely related Candida albicans pyrimidine synthase (THI5p) and the reconstitution and preliminary characterization of the enzymatic activity. A structure of the C. albicans THI5p shows PLP bound at the active site via an imine with Lys62 and His66 in close proximity to the PLP. Our data suggest that His66 of the THI5 protein is the histidine source for pyrimidine formation and that the pyrimidine synthase is a single-turnover enzyme.


    Organizational Affiliation

    Department of Chemistry, Texas A&M University, College Station, 77843, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Pyrimidine biosynthesis enzyme THI13
A, B
342Candida albicans (strain WO-1)Mutation(s): 1 
Gene Names: THI5
Find proteins for C4YMW2 (Candida albicans (strain WO-1))
Go to UniProtKB:  C4YMW2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIT
Query on CIT

Download SDF File 
Download CCD File 
A, B
CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.162 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 55.386α = 90.00
b = 99.474β = 90.00
c = 126.389γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
MLPHAREphasing
ADSCdata collection
HKL-2000data reduction
SCALEPACKdata scaling
HKL-2000data scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2018-01-24
    Type: Structure summary