3ONT

The Crystal Structure of Spot14, a modulator of lipogenesis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of Spot 14, a modulator of fatty acid synthesis.

Colbert, C.L.Kim, C.W.Moon, Y.A.Henry, L.Palnitkar, M.McKean, W.B.Fitzgerald, K.Deisenhofer, J.Horton, J.D.Kwon, H.J.

(2010) Proc.Natl.Acad.Sci.USA 107: 18820-18825

  • DOI: 10.1073/pnas.1012736107

  • PubMed Abstract: 
  • Spot 14 (S14) is a protein that is abundantly expressed in lipogenic tissues and is regulated in a manner similar to other enzymes involved in fatty acid synthesis. Deletion of S14 in mice decreased lipid synthesis in lactating mammary tissue, but th ...

    Spot 14 (S14) is a protein that is abundantly expressed in lipogenic tissues and is regulated in a manner similar to other enzymes involved in fatty acid synthesis. Deletion of S14 in mice decreased lipid synthesis in lactating mammary tissue, but the mechanism of S14's action is unknown. Here we present the crystal structure of S14 to 2.65 Å and biochemical data showing that S14 can form heterodimers with MIG12. MIG12 modulates fatty acid synthesis by inducing the polymerization and activity of acetyl-CoA carboxylase, the first committed enzymatic reaction in the fatty acid synthesis pathway. Coexpression of S14 and MIG12 leads to heterodimers and reduced acetyl-CoA carboxylase polymerization and activity. The structure of S14 suggests a mechanism whereby heterodimer formation with MIG12 attenuates the ability of MIG12 to activate ACC.


    Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9050, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Spot 14 protein
A
152Mus musculusMutation(s): 0 
Gene Names: Thrsp (S14)
Find proteins for Q62264 (Mus musculus)
Go to UniProtKB:  Q62264
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.223 
  • Space Group: I 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 144.951α = 90.00
b = 144.951β = 90.00
c = 144.951γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling
REFMACrefinement
HKL-3000phasing
HKL-3000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-01-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance