title: Na(+)/glutamine (asparagine) cotransport by Staphylococcus lugdunensis and Corynebacterium amycolatum.
abstract: 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.
authors.affiliation: Department of Physiology, Johns Hopkins Medical School, Baltimore, Maryland 21205, USA.
authors.forename: R I
authors.initials: RI
authors.lastname: Sarker
authors.forename: P C
authors.initials: PC
authors.lastname: Maloney
mesh_terms: 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
chemical_list: D027322:Amino Acid Transport System X-AG; D002352:Carrier Proteins; D050491:Glutamate Plasma Membrane Transport Proteins; D005971:Glutamates; D027981:Symporters; D012964:Sodium