title: Purification and partial structural characterization of a fatty acid-binding protein from the liver of the South American armadillo Chaetophractus villosus.
abstract: The fatty acid-binding protein (FABP) from armadillo liver was purified to homogeneity by a procedure involving gel filtration and two anion exchange chromatography steps. The purified protein proved to have a pI between 5.0 and 5.2 and migrated by sodium dodecyl sulfate-polyacrilamyde gel electrophoresis as a single entity of approximately 14 kDa. The armadillo FABP cross-reacted with antiserum against rat liver FABP but not against rat intestinal FABP. The same as other members of the family, it has a blocked N-terminus. Amino acid sequencing of peptides obtained by cyanogen bromide cleavage and in-gel tryptic digestion shows that the armadillo, despite being one of the less evolved mammals, has a liver FABP of the same type as that of highly evolved mammals.
authors.affiliation: Instituto the Química y Fisicoquímica Biológicas (IQUIFIB)-CONICET-UBA, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina.
authors.forename: B M
authors.initials: BM
authors.lastname: Cavagnari
authors.forename: O L
authors.initials: OL
authors.lastname: Córdoba
authors.forename: J M
authors.initials: JM
authors.lastname: Affanni
authors.forename: J A
authors.initials: JA
authors.lastname: Santomé
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D001135:Armadillos / Q000235:genetics / Q000378:metabolism*; D002352:Carrier Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification*; D003429:Cross Reactions; D003600:Cytosol / Q000378:metabolism; D019143:Evolution, Molecular; D000071438:Fatty Acid-Binding Protein 7; D050556:Fatty Acid-Binding Proteins; D005227:Fatty Acids / Q000378:metabolism*; D006801:Humans; D007120:Immunochemistry; D007526:Isoelectric Point; D008099:Liver / Q000378:metabolism*; D008969:Molecular Sequence Data; D008970:Molecular Weight; D018996:Myelin P2 Protein / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification*; D009363:Neoplasm Proteins; D009419:Nerve Tissue Proteins; D010802:Phylogeny; D051381:Rats; D017386:Sequence Homology, Amino Acid; 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; D018996:Myelin P2 Protein; D009363:Neoplasm Proteins; D009419:Nerve Tissue Proteins; D025521:Tumor Suppressor Proteins