RNase is an enzyme that cleaves the P-O bond in RNA. It has two His residues in the active site. Suggest a plausible explanation why the cnzyme activity changes when pH is increased or decreased from pH 6.0, as shown in the graph. 120 Choose all of the true statements. 100 | Both His residues are deprotonated at pH higher than 80 60 than 6.5. | There are two His residues and both are deprotonated below pH 4.2. O The substrate is affected by the change in pH and is inactive (postively charged) when pH is above 6.0. | RNAS is an acid-base catalyst. 20 10 Data provided by Dr. Sunita Chowrira, University of British Columbia. |The RNase reaction is an example of metal ion catalysis with a positively charged metal. O O
Neutral Amino Acids
Amino acids which do not have any charge on them are neutral amino acids.
Globular Protein
The globular proteins refer to the shape of protein specifically spherical in nature apart from spherical form fibrous, disordered and membrane-bound proteins exist. These globular proteins are miscible in water and form a colloidal solution rather than other types which might not exhibit solubility. Many classes of the fold are found in globular proteins, which render them a sphere shape. Globular fold containing proteins usually are referred to by the term globin.
Dimer
Dimers are basic organic compounds, which are derivates of oligomers. It is formed by the combination of two monomers which could potentially be strong or weak and in most cases covalent or intermolecular in nature. Identical monomers are called homodimer, the non-identical dimers are called heterodimer. The method by which dimers are formed is known as “dimerization”.
Dipeptide
A dipeptide is considered a mixture of two distinct amino acids. Since the amino acids are distinct, based on their composition, two dipeptide's isomers can be produced. Various dipeptides are biologically essential and are therefore crucial to industry.
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