title: Fatty acid binding proteins from heart.
abstract: Heart contains a fatty acid binding protein (FABP) concentration comparable to liver, when it is determined with a fatty acid-binding assay. The low concentration detected with anti-liver FABP antibodies is related to the different chemical forms and physiochemical properties of liver and heart FABP. The ratio of fatty acid bound per purified protein molecule is one or lower. Rat heart mitochondria oxidize FABP-bound fatty acids. The FABP content of rat heart is dependent on sex and diurnal cycle, but is not influenced by starvation or clofibrate feeding. It is also not different in the newborn rat. FABP was obtained from human heart in a yield of 11%. It shows similar binding characteristics to palmitic, oleic and arachidonic acid. The functional significance of the specific heart FABP is discussed in relation to myocardial fatty acid metabolism in normal and pathological conditions.
mesh_terms: D000375:Aging; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002352:Carrier Proteins / Q000302:isolation & purification / Q000378:metabolism*; D002417:Cattle; D003600:Cytosol / Q000378:metabolism; D000071438:Fatty Acid-Binding Protein 7; D050556:Fatty Acid-Binding Proteins; D005227:Fatty Acids / Q000378:metabolism*; D005260:Female; D006321:Heart / Q000254:growth & development; D006801:Humans; D008297:Male; D008954:Models, Biological; D008970:Molecular Weight; D009206:Myocardium / Q000378:metabolism*; D009363:Neoplasm Proteins; D009419:Nerve Tissue Proteins; D051381:Rats; D013045:Species Specificity; D025521:Tumor Suppressor Proteins
chemical_list: D000596:Amino Acids; D002352:Carrier Proteins; C107608:FABP7 protein, human; C490174:Fabp7 protein, rat; D000071438:Fatty Acid-Binding Protein 7; D050556:Fatty Acid-Binding Proteins; D005227:Fatty Acids; D009363:Neoplasm Proteins; D009419:Nerve Tissue Proteins; D025521:Tumor Suppressor Proteins