title: Isolation of glutamyltaurine from bovine brains and proof of its gamma-linkage by the B/E linked scan SIMS technique.
abstract: We isolated a glutamyltaurine from bovine brains and determined its structure as gamma-glutamyltaurine (gamma-Glu-Tau; glutaurine) by use of a new mass spectrometric technique [B/E linked scan sputtered ion mass spectrometry (SIMS)], which we have recently shown to be useful for distinguishing the gamma- from the alpha-isomer of glutamyl-dipeptides. Neither the alpha-isomer of glutamyltaurine nor any aspartyltaurines could be detected in bovine brain.
authors.affiliation: Institute of Bio-Active Science, Nippon Zoki Pharmaceutical Co., Ltd., Hyogo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakamura
authors.forename: K
authors.initials: K
authors.lastname: Higashiura
authors.forename: N
authors.initials: N
authors.lastname: Nishimura
authors.forename: A
authors.initials: A
authors.lastname: Yamamoto
authors.forename: I
authors.initials: I
authors.lastname: Tooyama
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: K
authors.initials: K
authors.lastname: Ienaga
mesh_terms: D000818:Animals; D001923:Brain Chemistry; D002417:Cattle; D005973:Glutamine / Q000031:analogs & derivatives* / Q000302:isolation & purification; D013058:Mass Spectrometry; D015394:Molecular Structure; D013654:Taurine / Q000031:analogs & derivatives* / Q000302:isolation & purification
chemical_list: D005973:Glutamine; D013654:Taurine; C020903:glutaurine