Energization of amino acid transport in energy-depleted Ehrlich cells and plasma membrane vesicles
dc.contributor.author | Ohsawa, Motoyasu | en_US |
dc.contributor.author | Kilberg, Michael S. | en_US |
dc.contributor.author | Kimmel, Gene | en_US |
dc.contributor.author | Christensen, Halvor N. | en_US |
dc.date.accessioned | 2006-04-07T17:23:49Z | |
dc.date.available | 2006-04-07T17:23:49Z | |
dc.date.issued | 1980-06-20 | en_US |
dc.identifier.citation | Ohsawa, Motoyasu, Kilberg, Michael S., Kimmel, Gene, Christensen, Halvor N. (1980/06/20)."Energization of amino acid transport in energy-depleted Ehrlich cells and plasma membrane vesicles." Biochimica et Biophysica Acta (BBA) - Biomembranes 599(1): 175-190. <http://hdl.handle.net/2027.42/23216> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6T1T-47T2TXM-3Y/2/79680c870d874af0b1e6f6d59ecff40c | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/23216 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=7397146&dopt=citation | en_US |
dc.description.abstract | We redirect attention to contributions to the energization of the active transport of amino acids in the Ehrlich cell, beyond the known energization by down-gradient comigration of Na+, beyond possible direct energization by coupling to ATP breakdown, and beyond known energization by exchange with prior accumulations of amino acids. We re-emphasize the uphill operation of System L, and by prior depletion of cellular amino acids show that this system must receive energy beyond that made available by their coupled exodus. After this depletion the Na+-independent accumulation of the norbornane amino acid, 2-aminobicycloheptane-2-carboxylic acid becomes strongly subject to stimulation by incubation with glucose. Energy transfer between Systems A and L through the mutual substrate action of ordinary amino acids was minimized although not entirely avoided by the use of amino acid analogs specific to each system.When 2,4-dinitrophenol was included in the depleting treatment, and pyruvate, phenazine methosulfate, or glucose used for restoration, recovery of uptake of the norbornane amino acid was independent of external Na+ or K+ levels. Restoration of the uptake of 2-(methylamino)isobutyric acid was, however, decreased by omission of external K+. Contrary to an earlier finding, restoration of uptake of each of these amino acids was associated with distinct and usually correlated rises in cellular ATP levels. ATP addition failed to stimulate exodus of the norbornane amino acid from plasma membrane vesicles, although either NADH or phenazine methosulfate did stimulate exodus. ATP production and use is thus associated with transport energization, although evidence for a direct role failed to appear. | en_US |
dc.format.extent | 1106907 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Energization of amino acid transport in energy-depleted Ehrlich cells and plasma membrane vesicles | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Materials Science and Engineering | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbsecondlevel | Chemical Engineering | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Department of Biological Chemistry, The University of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.identifier.pmid | 7397146 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/23216/1/0000145.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0005-2736(80)90066-8 | en_US |
dc.identifier.source | Biochimica et Biophysica Acta | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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