Na(+)/glutamine (asparagine) cotransport by Staphylococcus lugdunensis and Corynebacterium amycolatum.
Staphylococcus lugdunensis and Corynebacterium amycolatum each have a Na(+)/glutamine cotransporter that displays an ordered reaction sequence at the extracellular surface, with sodium binding (K(m) of 6.5 mM) before glutamine (K(m) of 50 microM). Asparagine is low-affinity substrate (K(m) approximately 1 mM) for each system.
Sarker
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RI
Department of Physiology, Johns Hopkins Medical School, Baltimore, Maryland 21205, USA.
Maloney
P C
PC
D027322:Amino Acid Transport System X-AG; D001692:Biological Transport; D002352:Carrier Proteins / Q000378:metabolism*; D003352:Corynebacterium / Q000378:metabolism*; D004734:Energy Metabolism; D050491:Glutamate Plasma Membrane Transport Proteins; D005971:Glutamates / Q000378:metabolism*; D012867:Skin / Q000382:microbiology; D012964:Sodium / Q000378:metabolism*; D013210:Staphylococcus / Q000378:metabolism*; D013542:Sweat / Q000378:metabolism; D027981:Symporters
D027322:Amino Acid Transport System X-AG; D002352:Carrier Proteins; D050491:Glutamate Plasma Membrane Transport Proteins; D005971:Glutamates; D027981:Symporters; D012964:Sodium