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Isolation and reactions of a phosphorylated form of phosphoryl transferase from beef heart mitochondria

dc.contributor.authorBeyer, Robert E.en_US
dc.date.accessioned2006-04-17T15:28:56Z
dc.date.available2006-04-17T15:28:56Z
dc.date.issued1968-06en_US
dc.identifier.citationBeyer, Robert E. (1968/06)."Isolation and reactions of a phosphorylated form of phosphoryl transferase from beef heart mitochondria." Archives of Biochemistry and Biophysics 125(3): 884-894. <http://hdl.handle.net/2027.42/33167>en_US
dc.identifier.urihttp://www.sciencedirect.com/science/article/B6WB5-4DMW7SD-DM/2/1f8c3cd2c6b637c7bb8874419a077f15en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/33167
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=5671051&dopt=citationen_US
dc.description.abstractPhosphoryl transferase, a mitochondrial protein which increases the phosphorylative capacity of poorly phosphorylating submitochondrial particles and catalyzes an ATP-ADP exchange reaction, is phosphorylated during oxidation either of succinate or pyruvate-malate. Inhibitors of oxidative phosphorylation and electron transfer, as well as uncouplers of oxidative phosphorylation, inhibit the phosphorylation of the transferase when phosphorylation is mediated by electron transfer. The protein is also phosphorylated by ATP, the donor group being specifically the terminal phosphate of ATP. The transphosphorylation reaction is not inhibited by inhibitors of electron transfer and coupled phosphorylation, nor by uncouplers of oxidative phosphorylation. The phosphoryl form of the transferase can phosphorylate ADP in the presence of hexokinase, glucose, and magnesium ion, but the transfer is only 50% complete. During this transfer reaction a portion of the protein-bound phosphate becomes transformed to an acid-stable form. Phosphorus is released from phosphoryl transferase as inorganic orthophosphate at pH 4 and 10 and by heat, but is relatively stable at pH 7.5 at 0 [deg]. Hydroxylamine also induces release of protein-bound phosphorus as inorganic phosphate. The possible role of the phosphoryl group of the transferase in oxidative phosphorylation is discussed.en_US
dc.format.extent1119722 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherElsevieren_US
dc.titleIsolation and reactions of a phosphorylated form of phosphoryl transferase from beef heart mitochondriaen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelPublic Healthen_US
dc.subject.hlbsecondlevelChemistryen_US
dc.subject.hlbsecondlevelChemical Engineeringen_US
dc.subject.hlbsecondlevelBiological Chemistryen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.subject.hlbtoplevelScienceen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumInstitute for Enzyme Research, University of Wisconsin, Madison, Wisconsin, U.S.A.; Laboratory of Chemical Biology, Department of Zoology, The University of Michigan, Ann Arbor, Michigan 48104, U.S.A.en_US
dc.identifier.pmid5671051en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/33167/1/0000553.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1016/0003-9861(68)90527-4en_US
dc.identifier.sourceArchives of Biochemistry and Biophysicsen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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