4rax

Structural highlights

Function

[PIEZ1_MOUSE] Pore-forming subunit of a mechanosensitive non-specific cation channel. Generates currents characterized by a linear current-voltage relationship that are sensitive to ruthenium red and gadolinium. Plays a key role in epithelial cell adhesion by maintaining integrin activation through R-Ras recruitment to the ER, most probably in its activated state, and subsequent stimulation of calpain signaling. In the kidney, may contribute to the detection of intraluminal pressure changes and to urine flow sensing. Acts as shear-stress sensor that promotes endothelial cell organization and alignment in the direction of blood flow through calpain activation. Plays a key role in blood vessel formation and vascular structure in both development and adult physiology.^{[1] [2] [3] [4] [5]}

References

1. ↑ Coste B, Mathur J, Schmidt M, Earley TJ, Ranade S, Petrus MJ, Dubin AE, Patapoutian A. Piezo1 and Piezo2 are essential components of distinct mechanically activated cation channels. Science. 2010 Oct 1;330(6000):55-60. doi: 10.1126/science.1193270. Epub 2010 Sep , 2. PMID:20813920 doi:http://dx.doi.org/10.1126/science.1193270
2. ↑ Coste B, Xiao B, Santos JS, Syeda R, Grandl J, Spencer KS, Kim SE, Schmidt M, Mathur J, Dubin AE, Montal M, Patapoutian A. Piezo proteins are pore-forming subunits of mechanically activated channels. Nature. 2012 Feb 19;483(7388):176-81. doi: 10.1038/nature10812. PMID:22343900 doi:http://dx.doi.org/10.1038/nature10812
3. ↑ Peyronnet R, Martins JR, Duprat F, Demolombe S, Arhatte M, Jodar M, Tauc M, Duranton C, Paulais M, Teulon J, Honore E, Patel A. Piezo1-dependent stretch-activated channels are inhibited by Polycystin-2 in renal tubular epithelial cells. EMBO Rep. 2013 Dec;14(12):1143-8. doi: 10.1038/embor.2013.170. Epub 2013 Oct 25. PMID:24157948 doi:http://dx.doi.org/10.1038/embor.2013.170
4. ↑ Ranade SS, Qiu Z, Woo SH, Hur SS, Murthy SE, Cahalan SM, Xu J, Mathur J, Bandell M, Coste B, Li YS, Chien S, Patapoutian A. Piezo1, a mechanically activated ion channel, is required for vascular development in mice. Proc Natl Acad Sci U S A. 2014 Jul 15;111(28):10347-52. doi:, 10.1073/pnas.1409233111. Epub 2014 Jun 23. PMID:24958852 doi:http://dx.doi.org/10.1073/pnas.1409233111
5. ↑ Li J, Hou B, Tumova S, Muraki K, Bruns A, Ludlow MJ, Sedo A, Hyman AJ, McKeown L, Young RS, Yuldasheva NY, Majeed Y, Wilson LA, Rode B, Bailey MA, Kim HR, Fu Z, Carter DA, Bilton J, Imrie H, Ajuh P, Dear TN, Cubbon RM, Kearney MT, Prasad KR, Evans PC, Ainscough JF, Beech DJ. Piezo1 integration of vascular architecture with physiological force. Nature. 2014 Nov 13;515(7526):279-82. doi: 10.1038/nature13701. Epub 2014 Aug 10. PMID:25119035 doi:http://dx.doi.org/10.1038/nature13701