e/Magnesium transporter

Information
has gloss	eng: :This page links directly from the magnesium in biological systems page. Magnesium transporters are proteins that transport magnesium across the cell membrane. All forms of life require magnesium, and yet the molecular mechanisms of Mg2+ uptake from the environment and the distribution (transport) of this vital element within the organism are only slowly being elucidated. In bacteria Mg2+ is probably mainly supplied by the CorA protein and, where the CorA protein is absent, by the MgtE protein . In yeast the initial uptake is via the Alr1p and Alr2p proteins , but at this stage the only internal Mg2+ distributing protein identified is Mrs2p . Within the protozoa only one Mg2+ transporter (XntAp) has been identified . In metazoa, Mrs2p and MgtE homologues have been identified, along with two novel Mg2+ transport systems TRPM6/TRPM7 and PCLN-1 . Finally, in plants, a family of Mrs2p homologues has been identified along with another novel protein, AtMHX .
lexicalization	eng: magnesium transporter
instance of	(noun) a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine) Mg, atomic number 12, magnesium