Turning to the interaction analysis of known virulence factors based on the high-throughput Y2H screens, we examined identified PPIs for known virulence factors and those highly implicated in virulence for binding to host protein targets.
It is therefore not unlikely that different strains have a different binding affinity to host proteins including the TLR2/TLR6 complex and thus activate this complex to a varying degree resulting in a different disease outcome.
The osmotic change induces the expression of the Lig adhesins, which can promote the binding of the spirochetes to host proteins, such as fibronectin and fibrinogen [15], two major plasma proteins that could be lost from surrounding damaged vasculature.
Our study points to competitive binding of HIV proteins to host proteins using motifs found in the host as the mechanism of interplay between the host and pathogen genotypes in dictating response to therapy.
Interaction properties of LRRs are extremely diverse, exemplified by plant R-proteins that may sense parasites by binding to avirulence proteins or to host proteins that have been perturbed by the presence of parasite effectors [ 31].
Furthermore, the up-front Y2H screening and subsequent retesting of select host-pathogen protein interactions provided indications as to possible virulence mechanisms associated with the direct binding of the virulence factors to host proteins.
recently reported that the CM sequence (CRPIA motif) of Amerindian CagA is distinct from that of Western and East Asian CagA, which is responsible for an attenuated binding activity of Amerindian CagA to host proteins.
Studies have also shown that PTB interacts with the 5' and 3' ends of the Norwalk virus genome and although the function of this interaction has yet to be determined [53], [54], recent work has highlighted that the 5' and 3' ends of the Norwalk virus genome interact via binding to host cell proteins to form an RNP [55], of which PTB may be a component.
Additionally, commonly observed gut microbial transcripts in our study encode for proteins that enable binding to host epithelium, regulate processing of extracellular polysaccharides, and mediate microbial stress response.
For example, the cell-wall-associated proteins SpsD and SpsL are expressed by S. pseudintermedius during canine infection, are immunogenic and mediate binding to host extracellular matrix proteins, suggesting a role in disease pathogenesis [ 13].
