The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins [1,2] Gn and Gc (also known as G1 and G2, respectively) as a polyprotein precursor. Gn and Gc forms homotetramers at the surface of the virion, w ...
The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins [1,2] Gn and Gc (also known as G1 and G2, respectively) as a polyprotein precursor. Gn and Gc forms homotetramers at the surface of the virion, which attach the virion to host cell receptors including integrin beta3/ITGB3 and induce internalisation, predominantly through clathrin-dependent endocytosis [3,4]. This protein has a typical class II fusion protein fold consisting of a central beta-sandwich domain (termed domain I) made of eight beta-strands arranged in two antiparallel beta-sheets; domain II which has an elongated shape with two subdomains (a central, opened beta-barrel proximal to domain I and a distal beta-sandwich 'tip') and the C-terminal domain III, represented in this entry, which has a Ig-like fold [1,2].
The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins Gn and Gc (also known as G1 and G2, respectively) as a polyprotein precursor [1-4]. Gn and Gc forms homotetramers at the surface of the virion, w ...
The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins Gn and Gc (also known as G1 and G2, respectively) as a polyprotein precursor [1-4]. Gn and Gc forms homotetramers at the surface of the virion, which attach the virion to host cell receptors including integrin beta3/ITGB3 and induce internalisation, predominantly through clathrin-dependent endocytosis [2]. Gc protein has a typical class II fusion protein fold consisting of a central beta-sandwich domain (termed domain I) made of eight beta-strands arranged in two antiparallel beta-sheets, domain II which has an elongated shape with two subdomains (central, opened beta-barrel proximal to domain I and a distal beta-sandwich 'tip') and and domain III, which has an Ig-like fold [3,4]. This entry represents the N-terminal region of Gc containing the central and dimerisation domains (which includes domain I and II). This region has a conserved CNP motif, suggested to be an integrin-binding motif [2].
The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins, Gn and Gc (also known as G1 and G2, respectively), as a polyprotein precursor [1,2,3]. Gn and Gc forms homotetramers (spikes) at the surface of ...
The medium (M) genome segment of hantaviruses (family Bunyaviridae) encodes the two virion glycoproteins, Gn and Gc (also known as G1 and G2, respectively), as a polyprotein precursor [1,2,3]. Gn and Gc forms homotetramers (spikes) at the surface of the virion which attach the virion to host cell receptors including integrin beta3/ITGB3 induce internalisation, predominantly through clathrin-dependent endocytosis [3,4]. This entry represents the N-terminal two-thirds of the Gn glycoprotein ectodomain, denoted as 'head' (Gn-H) [2] which interacts with Gc ectodomain. Release of Gn-H at acid pH induces a further conformational change of the Gc domain II tip which exposes non-polar side chains for insertion into the endosomal membrane [2].
