The surface protein (SU) attaches the virus to the host cell by binding to its receptor. This interaction triggers the refolding of the transmembrane protein (TM) and is thought to activate its fusogenic potential by unmasking its fusion peptide. Fusion occurs at the host cell plasma membrane., The transmembrane protein (TM) acts as a class I viral fusion protein. Under the current model, the protein has at least 3 conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During viral and target cell membrane fusion, the coiled coil regions (heptad repeats) assume a trimer-of-hairpins structure, positioning the fusion peptide in close proximity to the C-terminal region of the ectodomain. The formation of this structure appears to drive apposition and subsequent fusion of viral and target cell membranes. Membranes fusion leads to delivery of the nucleocapsid into the cytoplasm. Source: Recombinant protein corresponding to aa32-470 from AKV murine leukemia virus Envelope glycoprotein, fused to 10X His-Tag at N-terminal and Myc-Tag at C-terminal, expressed in E.coli. Molecular Weight: ~53.3kD Amino Acid Sequence: VTLGNSPHQVFNLTWEVTNGDRETVWAITGNHPLWTWWPDLTPDLCMLALHGPSYWGLEYRAPFSPPPGPPCCSGSSDSTPGCSRDCEEPLTSYTPRCNTAWNRLKLSKVTHAHNGGFYVCPGPHRPRWARSCGGPESFYCASWGCETTGRASWKPSSSWDYITVSNNLTSDQATPVCKGNEWCNSLTIRFTSFGKQATSWVTGHWWGLRLYVSGHDPGLIFGIRLKITDSGPRVPIGPNPVLSDRRPPSRPRPTRSPPPSNSTPTETPLTLPEPPPAGVENRLLNLVKGAYQALNLTSPDKTQECWLCLVSGPPYYEGVAVLGTYSNHTSAPANCSVASQHKLTLSEVTGQGLCIGAVPKTHQVLCNTTQKTSDGSYYLAAPTGTTWACSTGLTPCISTTILDLTTDYCVLVELWPRVTYHSPSYVYHQFERRAKYKR Storage and Stability: Lyophilized and reconstituted products are stable for 6 months after receipt at -20C. Reconstitute with sterile ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Supplied as a lyophilized powder from 20mM Tris-HCl, 0.5M sodium chloride, pH 8.0, 6% trehalose. Reconstitute with sterile ddH2O to a concentration of 0.1-1mg/ml.
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