The following data describe the catalysis of cleavage of peptide bonds in small peptides by the enzyme UTSAse (the arrow indicates the peptide bond cleaved in each case).  Substrate                                     Km(mM)                     kcat(s-1) PAPA↓G                                            4.0                        26 PAPA↓A                                            1.5                        37 PAPA↓F                                             0.64                      18   what features of amino acid sequence dictate the specificity of the proteolytic cleavage? Large hydrophilic R-groups Large hydrophobic R-groups          Neutral R-groups Small hydrophilic R-groups Large hydrophobic R-groups Negatively charged R-groups Positively charged R-groups

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