2P5X

Crystal structure of Maf domain of human N-acetylserotonin O-methyltransferase-like protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Biochemical and structural studies of conserved maf proteins revealed nucleotide pyrophosphatases with a preference for modified nucleotides.

Tchigvintsev, A.Tchigvintsev, D.Flick, R.Popovic, A.Dong, A.Xu, X.Brown, G.Lu, W.Wu, H.Cui, H.Dombrowski, L.Joo, J.C.Beloglazova, N.Min, J.Savchenko, A.Caudy, A.A.Rabinowitz, J.D.Murzin, A.G.Yakunin, A.F.

(2013) Chem.Biol. 20: 1386-1398

  • DOI: 10.1016/j.chembiol.2013.09.011
  • Primary Citation of Related Structures:  4HEB, 4JHC, 4LU1

  • PubMed Abstract: 
  • Maf (for multicopy associated filamentation) proteins represent a large family of conserved proteins implicated in cell division arrest but whose biochemical activity remains unknown. Here, we show that the prokaryotic and eukaryotic Maf proteins exh ...

    Maf (for multicopy associated filamentation) proteins represent a large family of conserved proteins implicated in cell division arrest but whose biochemical activity remains unknown. Here, we show that the prokaryotic and eukaryotic Maf proteins exhibit nucleotide pyrophosphatase activity against 5-methyl-UTP, pseudo-UTP, 5-methyl-CTP, and 7-methyl-GTP, which represent the most abundant modified bases in all organisms, as well as against canonical nucleotides dTTP, UTP, and CTP. Overexpression of the Maf protein YhdE in E. coli cells increased intracellular levels of dTMP and UMP, confirming that dTTP and UTP are the in vivo substrates of this protein. Crystal structures and site-directed mutagenesis of Maf proteins revealed the determinants of their activity and substrate specificity. Thus, pyrophosphatase activity of Maf proteins toward canonical and modified nucleotides might provide the molecular mechanism for a dual role of these proteins in cell division arrest and house cleaning.


    Organizational Affiliation

    Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON M5S 3E5, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N-acetylserotonin O-methyltransferase-like protein
A, B
230Homo sapiensGene Names: ASMTL
EC: 2.1.1.-
Find proteins for O95671 (Homo sapiens)
Go to Gene View: ASMTL
Go to UniProtKB:  O95671
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.198 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 84.802α = 90.00
b = 116.983β = 90.00
c = 51.471γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
CrystalCleardata collection
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2013-11-20
    Type: Database references, Structure summary
  • Version 1.4: 2014-01-15
    Type: Database references