HCO3− Influx Across the Plasmalemma of Chara corallina: Divalent Cation Requirement 1
AUTOR(ES)
Lucas, William J.
RESUMO
An absolute requirement for divalent cations is reported for H14CO3− influx in Chara corallina. Effective substitution of eluted Ca2+ by Mg2+ and Sr2+ was observed, but Mn2+ was completely ineffective in restoring H14CO3− transport activity. Similarly, La3+ could not substitute for Ca2+ in this system. Low concentrations of ethylenediaminetetraacetate (0.01 to 0.06 mm) significantly enhanced the rate at which H14CO3− transport capacity was lost.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=542735Documentos Relacionados
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