I'm doing my master's thesis on drug repositioning for sars-cov-2 using AI more specificaly network medicine, I found only one PPIN map from Gordon et al. but it doesn't include the ace2 protein which by doing further reasearch I found that the SARS-CoV-2 spike protein directly binds with this host cell surface ACE2 receptor facilitating virus entry and replication. So I'm looking for PPIN that includes ACE2 protein but i can't find any
Is there a reason why it's not included ?
PS: I have very basic knowledge of this domain