The purpose of this article is to review and investigate further the molecular mechanism by which the SARS CoV2 virus infection proceeds via the formation of a hetero trimer between its protein S, the ACE2 receptor and the B0AT1 protein, which is the "entry receptor" for the infection process involving membrane fusion 10 . ...This RNA virus belongs to the coronavirus genus and is similar in some features to SARS CoV. Currently, no vaccine or approved medical treatment is available. ...