1.A.68.1.3
Small hydrophobic viroporin protein (SH), also called small protein 1A, of 65 aas and 1 TMS. Forms a proton-selective cation channel that may also be capable of transporting Na⁺ and K⁺, playing a role in budding and /or virus entry (Scott and Griffin 2015). May also play a role in counteracting host innate immunity (Russell et al. 2015).  The SH protein is stable in its pentameric membrane-integrated form. Simulations also showed the presence of water molecules within the bilayer by density distribution, thus confirming that the SH protein is a viroporin (Araujo et al. 2016).