Biomaterial Database

Plasma membrane fatty acid-binding protein (FABPpm) of the sheep placenta. 1994

F M Campbell, and M J Gordon, and A K Dutta-Roy

Receptor Research Laboratory, Rowett Research Institute, Aberdeen, Scotland, UK.

Fatty acid-binding protein (FABPpm) has been identified and characterised from sheep placental membranes. Binding of [14C]oleate to placental membranes was found to be time- and temperature-dependent. Addition of a 20-fold excess unlabelled oleic, palmitic, or linoleic acid reduced the binding of [14C]oleate to the membranes to around 50% of total binding, whereas D-alpha-tocopherol at similar concentrations did not affect [14C]oleate binding. This indicates that the binding sites are specific to fatty acids. Specific binding of [14C]oleate was reduced by heat denaturation or trypsin digestion of the membranes, suggesting that the fatty acid-binding sites are protein in nature. FABPpm was then solubilised from sheep placental membranes, and subsequently purified to electrophoretic homogeneity using an oleate-agarose affinity column. The purified FABPpm had an apparent molecular mass of 40 kDa, as determined by SDS-PAGE and by gel permeation chromatography. The [14C]oleate-binding activity of the purified protein was also confirmed by PAGE followed by autoradioblotting. The specific binding for oleate was around 1.5 nmol per mg of membrane protein. Our data indicate the presence of FABPpm in sheep placental membranes.

UI	MeSH Term	Description	Entries
D008565	Membrane Proteins	Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.	Cell Membrane Protein,Cell Membrane Proteins,Cell Surface Protein,Cell Surface Proteins,Integral Membrane Proteins,Membrane-Associated Protein,Surface Protein,Surface Proteins,Integral Membrane Protein,Membrane Protein,Membrane-Associated Proteins,Membrane Associated Protein,Membrane Associated Proteins,Membrane Protein, Cell,Membrane Protein, Integral,Membrane Proteins, Integral,Protein, Cell Membrane,Protein, Cell Surface,Protein, Integral Membrane,Protein, Membrane,Protein, Membrane-Associated,Protein, Surface,Proteins, Cell Membrane,Proteins, Cell Surface,Proteins, Integral Membrane,Proteins, Membrane,Proteins, Membrane-Associated,Proteins, Surface,Surface Protein, Cell
D009363	Neoplasm Proteins	Proteins whose abnormal expression (gain or loss) are associated with the development, growth, or progression of NEOPLASMS. Some neoplasm proteins are tumor antigens (ANTIGENS, NEOPLASM), i.e. they induce an immune reaction to their tumor. Many neoplasm proteins have been characterized and are used as tumor markers (BIOMARKERS, TUMOR) when they are detectable in cells and body fluids as monitors for the presence or growth of tumors. Abnormal expression of ONCOGENE PROTEINS is involved in neoplastic transformation, whereas the loss of expression of TUMOR SUPPRESSOR PROTEINS is involved with the loss of growth control and progression of the neoplasm.	Proteins, Neoplasm
D009829	Oleic Acids	A group of fatty acids that contain 18 carbon atoms and a double bond at the omega 9 carbon.	Octadecenoic Acids,Acids, Octadecenoic,Acids, Oleic
D010920	Placenta	A highly vascularized mammalian fetal-maternal organ and major site of transport of oxygen, nutrients, and fetal waste products. It includes a fetal portion (CHORIONIC VILLI) derived from TROPHOBLASTS and a maternal portion (DECIDUA) derived from the uterine ENDOMETRIUM. The placenta produces an array of steroid, protein and peptide hormones (PLACENTAL HORMONES).	Placentoma, Normal,Placentome,Placentas,Placentomes
D002352	Carrier Proteins	Proteins that bind or transport specific substances in the blood, within the cell, or across cell membranes.	Binding Proteins,Carrier Protein,Transport Protein,Transport Proteins,Binding Protein,Protein, Carrier,Proteins, Carrier
D005227	Fatty Acids	Organic, monobasic acids derived from hydrocarbons by the equivalent of oxidation of a methyl group to an alcohol, aldehyde, and then acid. Fatty acids are saturated and unsaturated (FATTY ACIDS, UNSATURATED). (Grant & Hackh's Chemical Dictionary, 5th ed)	Aliphatic Acid,Esterified Fatty Acid,Fatty Acid,Fatty Acids, Esterified,Fatty Acids, Saturated,Saturated Fatty Acid,Aliphatic Acids,Acid, Aliphatic,Acid, Esterified Fatty,Acid, Saturated Fatty,Esterified Fatty Acids,Fatty Acid, Esterified,Fatty Acid, Saturated,Saturated Fatty Acids
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001665	Binding Sites	The parts of a macromolecule that directly participate in its specific combination with another molecule.	Combining Site,Binding Site,Combining Sites,Site, Binding,Site, Combining,Sites, Binding,Sites, Combining
D012756	Sheep	Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS.	Ovis,Sheep, Dall,Dall Sheep,Ovis dalli
D050556	Fatty Acid-Binding Proteins	Intracellular proteins that reversibly bind hydrophobic ligands including: saturated and unsaturated FATTY ACIDS; EICOSANOIDS; and RETINOIDS. They are considered a highly conserved and ubiquitously expressed family of proteins that may play a role in the metabolism of LIPIDS.	Fatty Acid-Binding Protein,Adipocyte Lipid Binding Protein,Adipocyte-Specific Fatty Acid-Binding Protein,Brain-Type Fatty Acid-Binding Protein,Cytosolic Lipid-Binding Proteins,Fatty Acid-Binding Protein, Cardiac Myocyte,Fatty Acid-Binding Protein, Myocardial,Fatty Acid-Binding Proteins, Adipocyte-Specific,Fatty Acid-Binding Proteins, Brain-Specific,Fatty Acid-Binding Proteins, Cytosolic-Specific,Fatty Acid-Binding Proteins, Intestinal-Specific,Fatty Acid-Binding Proteins, Liver-Specific,Fatty Acid-Binding Proteins, Myocardial-Specific,Fatty Acid-Binding Proteins, Plasma-Membrane Specific,Intestinal Fatty Acid-Binding Protein,Liver Fatty Acid-Binding Protein,Myocardial Fatty Acid-Binding Protein,Plasma Membrane Fatty Acid-Binding Protein,Acid-Binding Protein, Fatty,Adipocyte Specific Fatty Acid Binding Protein,Brain Type Fatty Acid Binding Protein,Cytosolic Lipid Binding Proteins,Fatty Acid Binding Protein,Fatty Acid Binding Protein, Cardiac Myocyte,Fatty Acid Binding Protein, Myocardial,Fatty Acid Binding Proteins,Fatty Acid Binding Proteins, Adipocyte Specific,Fatty Acid Binding Proteins, Brain Specific,Fatty Acid Binding Proteins, Cytosolic Specific,Fatty Acid Binding Proteins, Intestinal Specific,Fatty Acid Binding Proteins, Liver Specific,Fatty Acid Binding Proteins, Myocardial Specific,Fatty Acid Binding Proteins, Plasma Membrane Specific,Intestinal Fatty Acid Binding Protein,Lipid-Binding Proteins, Cytosolic,Liver Fatty Acid Binding Protein,Myocardial Fatty Acid Binding Protein,Plasma Membrane Fatty Acid Binding Protein,Protein, Fatty Acid-Binding