4DOT

Crystal structure of human HRASLS3.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis for the Acyltransferase Activity of Lecithin:Retinol Acyltransferase-like Proteins.

Golczak, M.Kiser, P.D.Sears, A.E.Lodowski, D.T.Blaner, W.S.Palczewski, K.

(2012) J.Biol.Chem. 287: 23790-23807

  • DOI: 10.1074/jbc.M112.361550
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Lecithin:retinol acyltransferase-like proteins, also referred to as HRAS-like tumor suppressors, comprise a vertebrate subfamily of papain-like or NlpC/P60 thiol proteases that function as phospholipid-metabolizing enzymes. HRAS-like tumor suppressor ...

    Lecithin:retinol acyltransferase-like proteins, also referred to as HRAS-like tumor suppressors, comprise a vertebrate subfamily of papain-like or NlpC/P60 thiol proteases that function as phospholipid-metabolizing enzymes. HRAS-like tumor suppressor 3, a representative member of this group, plays a key role in regulating triglyceride accumulation and energy expenditure in adipocytes and therefore constitutes a novel pharmacological target for treatment of metabolic disorders causing obesity. Here, we delineate a catalytic mechanism common to lecithin:retinol acyltransferase-like proteins and provide evidence for their alternative robust lipid-dependent acyltransferase enzymatic activity. We also determined high resolution crystal structures of HRAS-like tumor suppressor 2 and 3 to gain insight into their active site architecture. Based on this structural analysis, two conformational states of the catalytic Cys-113 were identified that differ in reactivity and thus could define the catalytic properties of these two proteins. Finally, these structures provide a model for the topology of these enzymes and allow identification of the protein-lipid bilayer interface. This study contributes to the enzymatic and structural understanding of HRAS-like tumor suppressor enzymes.


    Organizational Affiliation

    Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA. mxg149@case.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Group XVI phospholipase A2
A
140Homo sapiensMutation(s): 0 
Gene Names: PLAAT3 (HRASLS3, HREV107, PLA2G16)
EC: 2.3.1.-, 3.1.1.32, 3.1.1.4
Find proteins for P53816 (Homo sapiens)
Go to UniProtKB:  P53816
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.203 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 62.446α = 90.00
b = 62.446β = 90.00
c = 73.922γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SHARPphasing
XDSdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-30
    Type: Initial release
  • Version 1.1: 2012-07-25
    Type: Database references