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. 2020 Sep 11:bbaa207. doi: 10.1093/bib/bbaa207

Table 3. Details of common interactors and their interaction with different coronaviruses.

Common human protein interactor Primary function according to Uniprot Viral interactor proteins
MERS SARS SARS2
MASP2 Activation of complement by its serum protease activity via mannose-binding lectin. Cleaves and activates C2 and C4, resulting in formation of C3 convertase N N N
FURIN Endoprotease with the ability to cleave at the RX(K/R)R consensus motif. Required for H7N1 and H5N1 influenza virus infection by hemagglutinin cleavage [32] S S S
TMPRSS2 Promotes SARS-CoV and SARS-CoV-2 infections via proteolytic cleavage of Angiotensin-converting enzyme 2 (ACE2) receptor promoting viral uptake, and cleavage of spike glycoproteins of coronavirus and its activation for host cell entry [33, 34] S S S
ACE2 Receptor for entry of SARS-CoV and SARS-CoV-2, NL63/HCoV-NL63 S S
BZW2 May be involved in neuronal differentiation nsp8ab M
TBK1 Serine/threonine kinase playing an important role in inflammatory responses against foreign substances nsp5ab nsp13
SMOC1 Important roles in eye and limb development. Probably regulates differentiation of osteoblast ORF7a ORF8
MARK3 It is a serine/threonine-protein kinase [35], which is involved in the specific phosphorylation of microtubule-associated proteins for MAP2 and MAP4 and phosphorylate MAPT/TAU. It negatively regulates hippo signaling pathway ORF9b,nsp13ab ORF9b
MARK2 It is a serine/threonine protein kinase [35], which is involved in cell polarity and microtubule dynamics regulation nsp13ab ORF9b
TRIM25 Ubiquitin E3 ligase and ISG15 E3 ligase [36], which is implicated in innate immune response for viruses [37, 38]. Mediates signal transduction leading to the production of interferons against viral infection [37, 39] N N
RCHY1 E3-dependent ubiquitination and proteasomal degradation of target proteins. Involved in the cell cycle progression regulation and enhance androgen receptor (AR) transcription factor activity nsp3ab nsp3ab