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Anglický jazyk
The Effect of Mutating the PDZ domains within secreted PDZD2
Autor: Zee man Wat
PDZ domains are one of the most common protein-protein interaction domains in human. PDZ domain containing 2 protein (PDZD2) contains 6 PDZ domains and is highly expressed in pancreatic beta cells. It undergoes cleavage in the endoplasmic reticulum to... Viac o knihe
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O knihe
PDZ domains are one of the most common protein-protein interaction domains in human. PDZ domain containing 2 protein (PDZD2) contains 6 PDZ domains and is highly expressed in pancreatic beta cells. It undergoes cleavage in the endoplasmic reticulum to produce a secreted form PDZD2 (sPDZD2) which retains the last two PDZ domains of PDZD2. sPDZD2 is a candidate beta cell regulatory factor. In current study, two mutated forms of sPDZD2 were generated with alterations in the amino acid sequence within the carboxylate-binding loop of one of the two PDZ domains, either at the PDZ5 or at the PDZ6 domain. Current study revealed that both the PDZ5-mutated and PDZ6-mutated sPDZD2 proteins failed to exert the insulinotropic effect that the wildtype sPDZD2 had on INS-1E cells when added exogenously in the culture medium. Both mutant proteins also failed to rescue the silencing action of siRNA on the insulinotropic effect of endogenous PDZD2 in INS-1E cells. These results suggest that intact carboxylate-binding loops of both PDZ5 and PDZ6 domain are crucial for the insulinotropic effect of sPDZD2 exerting on INS-1E cells.
- Vydavateľstvo: LAP LAMBERT Academic Publishing
- Rok vydania: 2011
- Formát: Paperback
- Rozmer: 220 x 150 mm
- Jazyk: Anglický jazyk
- ISBN: 9783844385335
