Crystal Structure of aP2

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

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Expression, purification, crystallization and structure of human adipocyte lipid-binding protein (aP2).

Marr, E.Tardie, M.Carty, M.Brown Phillips, T.Wang, I.K.Soeller, W.Qiu, X.Karam, G.

(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 1058-1060

  • DOI: https://doi.org/10.1107/S1744309106038656
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human adipocyte lipid-binding protein (aP2) belongs to a family of intracellular lipid-binding proteins involved in the transport and storage of lipids. Here, the crystal structure of human aP2 with a bound palmitate is described at 1.5 A resolution. Unlike the known crystal structure of murine aP2 in complex with palmitate, this structure shows that the fatty acid is in a folded conformation and that the loop containing Phe57 acts as a lid to regulate ligand binding by excluding solvent exposure to the central binding cavity.

  • Organizational Affiliation

    Exploratory Medicinal Sciences, Pfizer Global Research and Development Groton Laboratories, Eastern Point Road, Groton, CT 06340, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fatty acid-binding protein, adipocyte136Homo sapiensMutation(s): 0 
Gene Names: FABP4
UniProt & NIH Common Fund Data Resources
Find proteins for P15090 (Homo sapiens)
Explore P15090 
Go to UniProtKB:  P15090
PHAROS:  P15090
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15090
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.47α = 90
b = 53.94β = 90
c = 75γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-11-28
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance