Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 15.90 kDa 
• Atom Count: 884 
• Modelled Residue Count: 102 
• Deposited Residue Count: 140 
• Unique protein chains: 1

4DOT

Crystal structure of human HRASLS3.

• PDB DOI: 10.2210/pdb4DOT/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-02-10 Released: 2012-05-30 
• Deposition Author(s): Kiser, P.D., Golczak, M., Sears, A.E., Lodowski, D.T., Palczewski, K.

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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 

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

• PubMed: 22605381 
• 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. 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.

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Organizational Affiliation: 

Department of Pharmacology, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Group XVI phospholipase A2	A	140	Homo sapiens	Mutation(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

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 = 62.446	α = 90
b = 62.446	β = 90
c = 73.922	γ = 120

Software Package:

Software Name	Purpose
XDS	data scaling
SHARP	phasing
REFMAC	refinement
XDS	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-02-10 
• Released Date: 2012-05-30 
Deposition Author(s): Kiser, P.D., Golczak, M., Sears, A.E., Lodowski, D.T., Palczewski, K.

Revision History  

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