3U3O

Crystal structure of Human SULT1A1 bound to PAP and two 3-Cyano-7-hydroxycoumarin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.1 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: 10.1371/journal.pone.0026794
  • Primary Citation of Related Structures:  

  • 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. H ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sulfotransferase 1A1
A
315Homo sapiensMutation(s): 0 
Gene Names: SULT1A1 (STP, STP1)
EC: 2.8.2.1
Find proteins for P50225 (Homo sapiens)
Go to Gene View: SULT1A1
Go to UniProtKB:  P50225
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A3P
Query on A3P

Download SDF File 
Download CCD File 
A
ADENOSINE-3'-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
WHTCPDAXWFLDIH-KQYNXXCUSA-N
 Ligand Interaction
3QV
Query on 3QV

Download SDF File 
Download CCD File 
A
7-hydroxy-2-oxo-2H-chromene-3-carbonitrile
C10 H5 N O3
IJQYTHQDUDCJEQ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.176 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 72.180α = 90.00
b = 123.130β = 90.00
c = 44.240γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SCALAdata scaling
REFMACrefinement
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-16
    Type: Initial release
  • Version 1.1: 2012-04-11
    Type: Database references