title: Al-ATP as an intracellular carrier of Al(III) ion.
abstract: 1. Using 27Al and 31P NMR spectroscopy in conjunction with an Al lactate aqueous reagent at pH 7.2, Al complexes of ATP and of phospholipids were characterized in synthetic-aqueous and organic-phospholipid chemical systems and in the intact human red blood cell. 2. The observed 31P NMR chemical shifts of the Al-ATP complex in aqueous laboratory preparations or the intact human red blood cell were, respectively, alpha phosphate, -11.53 delta; beta phosphate, -22.65 delta; and gamma phosphate, -10.95 delta. 3. The observed complexed 27Al chemical shift was -2.22 delta. 4. The relative affinities for Al of the phospholipids determined from 31P NMR spectroscopic titrations were PA much greater than Cl much greater than PS greater than PG approximately equal to PI greater than PE plus approximately equal to PE much greater than SPH greater than PC.
authors.affiliation: University of Pittsburgh School of Medicine, Western Psychiatric Institute and Clinic, PA 15261.
authors.forename: K
authors.initials: K
authors.lastname: Panchalingam
authors.forename: S
authors.initials: S
authors.lastname: Sachedina
authors.forename: J W
authors.initials: JW
authors.lastname: Pettegrew
authors.forename: T
authors.initials: T
authors.lastname: Glonek
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism*; D000535:Aluminum / Q000378:metabolism*; D000544:Alzheimer Disease / Q000378:metabolism; D001693:Biological Transport, Active; D003593:Cytoplasm / Q000378:metabolism; D004912:Erythrocytes / Q000378:metabolism; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007474:Ion Exchange; D007773:Lactates / Q000494:pharmacology; D019344:Lactic Acid; D008274:Magnesium / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D010743:Phospholipids / Q000378:metabolism; D012964:Sodium / Q000378:metabolism; D013052:Spectrometry, X-Ray Emission
chemical_list: D007773:Lactates; D010743:Phospholipids; D019344:Lactic Acid; D000255:Adenosine Triphosphate; D012964:Sodium; D000535:Aluminum; D008274:Magnesium