2H11

Amino-terminal Truncated Thiopurine S-Methyltransferase Complexed with S-Adenosyl-L-Homocysteine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis of allele variation of human thiopurine-S-methyltransferase.

Wu, H.Horton, J.R.Battaile, K.Allali-Hassani, A.Martin, F.Zeng, H.Loppnau, P.Vedadi, M.Bochkarev, A.Plotnikov, A.N.Cheng, X.

(2007) Proteins 67: 198-208

  • DOI: 10.1002/prot.21272
  • Primary Citation of Related Structures:  
    2H11, 2BZG

  • PubMed Abstract: 
  • Human thiopurine S-methyltransferase (TPMT) exhibits considerable person-to-person variation in activity to thiopurine drugs. We have produced an N-terminal truncation of human TPMT protein, crystallized the protein in complex with the methyl donor p ...

    Human thiopurine S-methyltransferase (TPMT) exhibits considerable person-to-person variation in activity to thiopurine drugs. We have produced an N-terminal truncation of human TPMT protein, crystallized the protein in complex with the methyl donor product S-adenosyl-L-homocysteine, and determined the atomic structure to the resolution of 1.58 and 1.89 A, respectively, for the seleno-methionine incorporated and wild type proteins. The structure of TPMT indicates that the naturally occurring amino acid polymorphisms scatter throughout the structure, and that the amino acids whose alteration have the most influence on function are those that form intra-molecular stabilizing interactions (mainly van der Waals contacts). Furthermore, we have produced four TPMT mutant proteins containing variant alleles of TPMT*2, *3A, *3B, and *3C and examined the structure-function relationship of the mutant proteins based on their expression and solubility in bacteria and their thermostability profile.


    Organizational Affiliation

    Structural Genomics Consortium, University of Toronto, Toronto, Ontario, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thiopurine S-methyltransferaseA, B232Homo sapiensMutation(s): 0 
Gene Names: TPMT
EC: 2.1.1.67
Find proteins for P51580 (Homo sapiens)
Explore P51580 
Go to UniProtKB:  P51580
NIH Common Fund Data Resources
PHAROS  P51580
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAH
Query on SAH

Download CCD File 
A, B
S-ADENOSYL-L-HOMOCYSTEINE
C14 H20 N6 O5 S
ZJUKTBDSGOFHSH-WFMPWKQPSA-N
 Ligand Interaction
B3P
Query on B3P

Download CCD File 
A, B
2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C11 H26 N2 O6
HHKZCCWKTZRCCL-UHFFFAOYSA-N
 Ligand Interaction
SCN
Query on SCN

Download CCD File 
A, B
THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.206 
  • Space Group: P 42
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.636α = 90
b = 85.636β = 90
c = 69.818γ = 90
Software Package:
Software NamePurpose
SERGUIdata collection
HKL-2000data reduction
GLRFphasing
CNSrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-21
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-10-17
    Changes: Advisory, Data collection, Database references