Title : Cysteine 96 of Ntcp is responsible for NO-mediated inhibition of taurocholate uptake.

Pub. Date : 2013 Oct 1

PMID : 23886862






9 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Cysteine 96 of Ntcp is responsible for NO-mediated inhibition of taurocholate uptake. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
2 The Na(+) taurocholate (TC) cotransporting polypeptide Ntcp/NTCP mediates TC uptake across the sinusoidal membrane of hepatocytes. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
3 The Na(+) taurocholate (TC) cotransporting polypeptide Ntcp/NTCP mediates TC uptake across the sinusoidal membrane of hepatocytes. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
4 The Na(+) taurocholate (TC) cotransporting polypeptide Ntcp/NTCP mediates TC uptake across the sinusoidal membrane of hepatocytes. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
5 Our current aim was to determine which of the eight cysteine residues of Ntcp is responsible for NO-mediated S-nitrosylation and inhibition of TC uptake. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
6 Of the eight mutants tested, only C44A Ntcp displayed decreased total and plasma membrane (PM) levels that were also reflected in decreased TC uptake. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
7 C266A Ntcp showed a decrease in TC uptake that was not explained by a decrease in total expression or PM localization, indicating that C266 is required for optimal uptake. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
8 We speculated that NO would target C266 since a previous report had shown the thiol reactive compound [2-(trimethylammonium) ethyl] methanethiosulfonate bromide (MTSET) inhibits TC uptake by wild-type NTCP but not by C266A NTCP. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens
9 We speculated that NO would target C266 since a previous report had shown the thiol reactive compound [2-(trimethylammonium) ethyl] methanethiosulfonate bromide (MTSET) inhibits TC uptake by wild-type NTCP but not by C266A NTCP. Taurocholic Acid solute carrier family 10 member 1 Homo sapiens