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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Identification and characterization of AGTRAP, a human homolog of murine Angiotensin II Receptor-Associated Protein ( Agtrap).

Several classes of cytoplasmic proteins have been found to interact specifically with the carboxyl-terminal cytoplasmic region of the angiotensin II type 1 (AT(1)) receptor to regulate different aspects of AT(1) receptor physiology. The murine Angiotensin II Receptor-Associated Protein ( Agtrap) is a new member of them. We have recently cloned a new human gene cDNA that codes for a homolog of the murine Agtrap protein from a human fetal brain cDNA library. The deduced polypeptide product of the cDNA is 22 kDa in size, and its DNA and amino acid sequences are 85 and 77% identical to those of the mouse Agtrap gene, respectively. Hence we have named it the human Angiotensin II Receptor-Associated Protein ( AGTRAP) gene. The mRNA of AGTRAP was most abundantly expressed in kidney, heart, pancreas and thyroid. Using the yeast two-hybrid screening of a human fetal brain cDNA library, we have identified a new interaction partner of the human AGTRAP protein, RACK1 (Receptor of Activated Protein C Kinase). The AGTRAP-RACK1 interaction was confirmed by GST fusion protein pull-down assays, co-immunoprecipitation and surface plasmon resonance. We suggest that the AGTRAP-RACK1 interaction may help to recruit signaling complex to the AT(1) receptor to affect AT(1) receptor signaling.[1]

References

  1. Identification and characterization of AGTRAP, a human homolog of murine Angiotensin II Receptor-Associated Protein (Agtrap). Wang, W., Huang, Y., Zhou, Z., Tang, R., Zhao, W., Zeng, L., Xu, M., Cheng, C., Gu, S., Ying, K., Xie, Y., Mao, Y. Int. J. Biochem. Cell Biol. (2002) [Pubmed]
 
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