**: prototype site with distinct cleavage structure.
A total of five tryptophan residues are located in the NS2-3 precursor, three in the NS2 cytoplasmic domain and two in the NS3 protease domain; as shown in Fig. 8, it appears that in the folded post-cleavage structures of NS2 and NS3 [20,24], the tryptophan residues are in both buried and solvent-exposed regions.
From the post-cleavage structure, H956 makes many hydrogen bond contacts compared to C997, the loss of which would explain the loss of activity and fold on mutation.
The post-cleavage crystal structure of NS2 suggests that dimerisation is required for the activity of the autoprotease [20].
In the immediate future, we will be exploring the influence of cleavage site secondary structures, solvent accessibilities and other physicochemical properties on protease-substrate cleavage specificities, as well as their potential for enhancing the performance of our SVM prediction models.
Authors' response: The differences in post-translational modification, protein structures, cleavage site, etc, may have influence in the interacting residues and interaction interfaces, which count a lot when transferring interactions from intra-species PPI to inter-species PPIs.
In addition to cleaving pre-miRNA hairpins, the microprocessor complex can also promote cleavage of hairpin structures within annotated protein coding genes which are not further processed by Dicer [ 133, 134].
The miRNA pathway is distinct from the ancestral siRNA pathway in that it is initiated by the cleavage of hairpin structures (i.e., pri-miRNAs) from mRNAs in the nucleus by the Drosha/Pasha complex (also known as the Microprocessor complex), producing precursor-miRNAs (i.e., pre-miRNAs) that can be exported into the cytosol via the Exportin-5 Ran-GTP complex.
During electrochemical degradation of MG, N-demethylation and decomposition of conjugated structure by the cleavage of central carbon structure are the main reaction routes.
The unfavorable molecule (11) can further react with hydroxyl radical anion generated in the reaction mixture through the electrochemically driven homolytic cleavage and create structure (12).
Heparanase, an endoglucuronidase responsible for heparan sulfate cleavage, regulates the structure and function of heparan sulfate proteoglycans, leading to disassembly of the extracellular matrix.
