3U3R

Crystal structure of D249G mutated Human SULT1A1 bound to PAP and P-NITROPHENOL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.36 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

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This is version 1.2 of the entry. See complete history


Literature

The molecular basis for the broad substrate specificity of human sulfotransferase 1A1.

Berger, I.Guttman, C.Amar, D.Zarivach, R.Aharoni, A.

(2011) PLoS One 6: e26794-e26794

  • DOI: https://doi.org/10.1371/journal.pone.0026794
  • Primary Citation of Related Structures:  
    3U3J, 3U3K, 3U3M, 3U3O, 3U3R

  • PubMed Abstract: 

    Cytosolic sulfotransferases (SULTs) are mammalian enzymes that detoxify a wide variety of chemicals through the addition of a sulfate group. Despite extensive research, the molecular basis for the broad specificity of SULTs is still not understood. Here, structural, protein engineering and kinetic approaches were employed to obtain deep understanding of the molecular basis for the broad specificity, catalytic activity and substrate inhibition of SULT1A1. We have determined five new structures of SULT1A1 in complex with different acceptors, and utilized a directed evolution approach to generate SULT1A1 mutants with enhanced thermostability and increased catalytic activity. We found that active site plasticity enables binding of different acceptors and identified dramatic structural changes in the SULT1A1 active site leading to the binding of a second acceptor molecule in a conserved yet non-productive manner. Our combined approach highlights the dominant role of SULT1A1 structural flexibility in controlling the specificity and activity of this enzyme.


  • Organizational Affiliation

    Department of Life Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sulfotransferase 1A1315Homo sapiensMutation(s): 1 
Gene Names: hSULT1A1 D249G mutationOK/SW-cl.88STPSTP1SULT1A1
EC: 2.8.2.1
UniProt & NIH Common Fund Data Resources
Find proteins for P50225 (Homo sapiens)
Explore P50225 
Go to UniProtKB:  P50225
PHAROS:  P50225
GTEx:  ENSG00000196502 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50225
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.36 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.38α = 90
b = 80.27β = 90
c = 123.16γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-16
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references, Derived calculations