Function
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 a 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. Acts as a sensor of phosphatidylserine (PS) flipping at the plasma membrane and governs morphogenesis of muscle cells. In myoblasts; flippase-mediated PS enrichment at the inner leaflet of plasma membrane triggers channel activation and Ca2+ influx followed by Rho GTPases signal transduction; leading to assembly of cortical actomyosin fibers and myotube formation.
Sequence
MEPHVLGAGLYWLLLPCTLLAASLLRFNALSLVYLLFLLLLPWLPGPSRHSIPGHTGRLLRALLCLSLLFLVAHVAFQICLHTMPRLNQLLGQNCNLWANVSQHIGVTRLDLKDIFNTTRLVAPDLGVLVASSLCLGLCGRLTRKARQSQRTQELEEDDIDAAPAAGLQGAPTLATKRRLWLAPRFRITAHWLLVTSGRMLVIVLLALAGIAHPSAFSSVYLMVFLAICTWWSCHFPLSSLGFNTLCVMVSCFGAGHLVCLYCYQTPFVQSVLLPGSLWARLFGLKNFVDIPNCSSPNVLVLNTKHAWPIYVSPGILLLLYYTATSLLKLRKGRFSELRKEIPREDEEHELELDQLEPEPQARGTTQGATPTTTGPDIDNCTVHVLTSQSPVRQRPVRPRLAELKEMSPLHGLGHLILDQSYVCALIAMMVWSIMYHSWLTFVLLLWACLIWTVRSRHQLAMLCSPCILLYGLTLCCLRYVWAMELPELPTTLGPVSLHQLGLEHTRYPCLDLGAMLLYLLTFWLLLRQFVKEKLLKKRKAPSTLLEVTVSDTEPTQTQTLLRSLGELVTGIYVKYWIYVCAGMFIVVSFAGRLVVYKIVYMFLFLLCLTLFQVYYTLWRKLLRVFWWLVVAYTMLVLIAVYTFQFQDFPTYWRNLTGFTDEQLGDLGLEQFSVSELFSSILIPGFFLLACILQLHYFHRPFMQLTDLEHVPPPGTRRLRWAHRQDTVSEAPLLQHQEEEEVFRDDGQSMDGPHQTTQVPEGTASKWGLVADRLLDLASSFSAVLTRIQVFVRCLLELHVFKLVALYTVWVALKEVSVMNLLLVVLWAFALPYPRFRPMASCLSTVWTCIIIVCKMLYQLKIVNPHEYSSNCTEPFPNNTNLQPLEISQSLLYRGPVDPANWFGVRKGYPNLGYIQNHLQILLLLVFEAVVYRRQEHYRRQHQQAPLPAQALCADGTRQRLDQDLLSCLKYFINFFFYKFGLEICFLMAVNVIGQRMNFMVILHGCWLVAILTRRRREAIARLWPNYCLFLTLFLLYQYLLCLGMPPALCIDYPWRWSQAIPMNSALIKWLYLPDFFRAPNSTNLISDFLLLLCASQQWQVFSAEQTEEWQRMAGVNTDHLEPLRGEPNPIPNFIHCRSYLDMLKVAVFRYLFWLVLVVVFVTGATRISIFGLGYLLACFYLLLFGTTLLQKDTRAQLVLWDCLILYNVTVIISKNMLSLLSCVFVEQMQSNFCWVIQLFSLVCTVKGYYDPKEMKTRDRDCLLPVEEAGIIWDSICFFFLLLQRRVFLSHYFLHVSADLKATALQASRGFALYNAANIKNINFHRQTEERSLAQLKRQMKRIRAKQEKYRQSQASRGQLQSTDPQEPGPDSPGGSSPPRTQWWRPWQDHATVIHSGDYFLFESDSEEEEEALPEDPRPAAQSAFQMAYQAWVTNAQTVLRQRREQARRDRAEQLASGGDLSPEVELVDVPENEMAGHSHVMQRVLSTMQFLWVLGQATVDGLTRWLRTFTKDHRTMSDVLCAERYLLTQELLRGGEVHRGVLDQLYVSEDEIALSGPVENRDGPSTASSGLGAEEPLSSMTDDTGSPLSTGYNTRSGSEEIITDTGGLQAGTSLHGSQELLANARTRMRTASELLLDRRLRIPELEEAEQFEAQQGRTLRLLRAMYQCVAAHSELLCYFIIILNHMVTASAASLVLPVLVFLWAMLTIPRPSKRFWMTAIVFTEVMVVTKYLFQFGFFPWNSYIVLRRYENKPYFPPRILGLEKTDSYIKYDLVQLMALFFHRSQLLCYGLWDHEEDGVPKDHCRSSEKDQEAEEESEAKLESQPETGTGHPEEPVLTGTPKDHIQGKGSVRSKDEIQDPPEDLKPQHRRHISIRFRRRKETQGPKGAAVVEAEHEEGEEGREAAGRKRLRRPREGLKIREKMKAAGRRLQSFCLSLAQSFYQPLRRFFHDILHTKYRAATDVYALMFLADIVDIVVIIFGFWAFGKHSAATDIASSLSDDQVPQAFLFMLLVQFGTMVIDRALYLRKTVLGNLAFQVVLVVAIHLWMFFILPAVTERMFRQNAVAQLWYFVKCIYFALSAYQIRCGYPTRILGNFLTKKYNHLNLFLFQGFRLVPFLVELRAVMDWVWTDTTLSLSNWMCVEDIYANIFIIKCSRETEKKYPQPKGQKKKKIVKYGMGGLIILFLIAIIWFPLLFMSLIRSVVGVVNQPIDVTVTLKLGGYEPLFTMSAQQPSIVPFTPEDYEELSQQFDPYPLAMQFISQYSPEDIVTAQIEGSSGALWRISPPSRAQMKHELYNGTADITLRFTWNFQRDLAKGGSVEYTNEKHTLELAPNSTARRQLAQLLEGRPDQSVVIPHLFPKYIRAPNGPEANPVKQLQPDEEEDYLGVRIQLRREQVGTGTSGEQAGTKASDFLEWWVIELQDCQAECNLLPMVIFSDKVSPPSLGFLAGYGIVGLYVSIVLVVGKFVRGFFSDISHSIMFEELPCVDRILKLCQDIFLVRETRELELEEELYAKLIFLYRSPETMIKWTREKE