Crystal structure of human HRASLS2

Experimental Data Snapshot

  • Resolution: 1.25 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


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: https://doi.org/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. 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

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HRAS-like suppressor 2A [auth X]137Homo sapiensMutation(s): 1 
Gene Names: HRASLS2
EC: 2.3.1 (PDB Primary Data), 3.1.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NWW9 (Homo sapiens)
Explore Q9NWW9 
Go to UniProtKB:  Q9NWW9
GTEx:  ENSG00000133328 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NWW9
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on CSX
Experimental Data & Validation

Experimental Data

  • Resolution: 1.25 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.150 
  • R-Value Observed: 0.151 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.738α = 90
b = 37.078β = 113.38
c = 45.423γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

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
  • Version 1.2: 2020-02-26
    Changes: Data collection, Database references, Derived calculations
  • Version 1.3: 2023-09-13
    Changes: Data collection, Database references, Refinement description