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 
  • R-Value Observed: 0.204 

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:  
    4DOT, 4DPZ

  • 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 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 ...

    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
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Group XVI phospholipase A2A140Homo sapiensMutation(s): 0 
Gene Names: PLA2G16, HRASLS3, HREV107, PLAAT3
EC: 3.1.1 (PDB Primary Data), 2.3.1 (UniProt), 3.1.1.32 (UniProt), 3.1.1.4 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P53816 (Homo sapiens)
Explore P53816 
Go to UniProtKB:  P53816
PHAROS:  P53816
GTEx:  ENSG00000176485
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.446α = 90
b = 62.446β = 90
c = 73.922γ = 120
Software Package:
Software NamePurpose
XDSdata scaling
SHARPphasing
REFMACrefinement
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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