Title : Functional expression of the human cardiac Na+/Ca2+ exchanger in Sf9 cells: rapid and specific Ni2+ transport.

Pub. Date : 1999 Jan

PMID : 10191956






3 Functional Relationships(s)
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1 Although inhibition of the Na+/Ca2+ exchanger normally increases [Ca2+]i in neonatal cardiac myocytes, application of the inhibitor Ni2+ appears to reduce [Ca2+] measured by fluo-3. Nickel(2+) nascent polypeptide associated complex subunit alpha 2 Homo sapiens
2 Experiments with infected Sf9 cells suggested that Ni2+ was transported via the Na+/Ca2+ exchanger at a rate comparable to the Ca2+ transport. Nickel(2+) nascent polypeptide associated complex subunit alpha 2 Homo sapiens
3 We conclude that Ni2+ does indeed block INaCa, but is also rapidly translocated across the cell membrane by the Na+/Ca2+ exchanger itself, most likely via an electroneutral partial reaction of the exchange cycle. Nickel(2+) nascent polypeptide associated complex subunit alpha 2 Homo sapiens