Document Detail


Spectroscopic investigations on the binding site of bovine hepatic fatty acid binding protein. Evidence for the existence of a single binding site for two fatty acid molecules.
MedLine Citation:
PMID:  4064218     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The hydrophobic region of the binding site of a bovine fatty acid binding protein (pI 7.0-FABP) has been characterized using fluorescence and circular dichroism (CD) spectroscopy. Blue-shifts of fluorescence emission maxima and increased lifetimes of naphthylamine dyes, anthroyloxy-fatty acids, pyrene nonanoic acid and trans-parinaric acid indicated a hydrophobic interaction with FABP. The fluorescence quenching of various anthroyloxy-fatty acids by iodide and acrylamide showed lower accessibility to the fluorophore linked to the carbon adjacent to the carbonyl group and towards the methyl end of the fatty acid. Binding stoichiometries were different for fatty acids and their bulky fluorescent analogues. trans-Parinaric acid when bound to FABP showed a complex induced CD-spectrum, which is explained by a close proximity of two ligands in the same binding site. Fluorescent derivatives of phosphatidylcholine with trans-parinaric acid and cholesteryl trans-parinarate did not bind to FABP. Thus, the binding site appears to be constructed for high affinity binding of long chain fatty acids.
Authors:
H J Keuper; R A Klein; F Spener
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemistry and physics of lipids     Volume:  38     ISSN:  0009-3084     ISO Abbreviation:  Chem. Phys. Lipids     Publication Date:  1985 Aug 
Date Detail:
Created Date:  1986-01-08     Completed Date:  1986-01-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0067206     Medline TA:  Chem Phys Lipids     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  159-73     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Binding Sites
Carrier Proteins / isolation & purification,  metabolism*
Cattle
Fatty Acid-Binding Proteins
Fatty Acids / metabolism*
Kinetics
Liver / metabolism*
Neoplasm Proteins*
Protein Binding
Spectrometry, Fluorescence / methods
Spectrophotometry, Ultraviolet / methods
Structure-Activity Relationship
Chemical
Reg. No./Substance:
0/Carrier Proteins; 0/Fatty Acid-Binding Proteins; 0/Fatty Acids; 0/Neoplasm Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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