3W8R

Mutant structure of Thermus thermophilus HB8 uridine-cytidine kinase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Indispensable residue for uridine binding in the uridine-cytidine kinase family.

Tomoike, F.Nakagawa, N.Fukui, K.Yano, T.Kuramitsu, S.Masui, R.

(2017) Biochem Biophys Rep 11: 93-98

  • DOI: 10.1016/j.bbrep.2017.07.002
  • Primary Citation of Related Structures:  
    3W8R

  • PubMed Abstract: 
  • Uridine-cytidine kinase (UCK), including human UCK2, are a family of enzymes that generally phosphorylate both uridine and cytidine. However, UCK of Thermus thermophilus HB8 (ttCK) phosphorylates only cytidine. This cytidine-restricted activ ...

    Uridine-cytidine kinase (UCK), including human UCK2, are a family of enzymes that generally phosphorylate both uridine and cytidine. However, UCK of Thermus thermophilus HB8 (ttCK) phosphorylates only cytidine. This cytidine-restricted activity is thought to depend on Tyr93, although the precise mechanism remains unresolved. Exhaustive mutagenesis of Tyr93 in ttCK revealed that the uridine phosphorylation activity was restored only by replacement of Tyr93 with His or Gln. Replacement of His117 in human UCK2, corresponding to residue Tyr93 in ttCK, by Tyr resulted in a loss of uridine phosphorylation activity. These findings indicated that uridine phosphorylation activity commonly depends on a single residue in the UCK family.


    Organizational Affiliation

    Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uridine kinaseAB211Thermus thermophilus HB8Mutation(s): 1 
Gene Names: TTHA0578udk
EC: 2.7.1.48
Find proteins for Q5SKR5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Explore Q5SKR5 
Go to UniProtKB:  Q5SKR5
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACP
Query on ACP

Download CCD File 
A, B
PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER
C11 H18 N5 O12 P3
UFZTZBNSLXELAL-IOSLPCCCSA-N
 Ligand Interaction
CTN
Query on CTN

Download CCD File 
A, B
4-AMINO-1-BETA-D-RIBOFURANOSYL-2(1H)-PYRIMIDINONE
C9 H13 N3 O5
UHDGCWIWMRVCDJ-XVFCMESISA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.221 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.3α = 90
b = 124.1β = 90
c = 60.7γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
CNSrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Advisory, Database references, Refinement description
  • Version 1.2: 2019-12-25
    Changes: Database references