Which statement is true for the active site residues of RNase A, lysozyme, or trypsin? Select any/all answers that apply. O A. His12 (RNase A) initially acts as an acid. O B. His119 (RNase A) initially acts as an acid. O C. Glu35 (lysozyme) initially acts as an acid. O D. His57 (trypsin) initially acts as an acid. O E. Ser195 (trypsin) initially acts as an acid.

(please type answer no write by hend)

What is the difference between eukaryotes and prokaryotes in terms of ribosomal subunit binding?

Lysozyme cleaves between NAG and NAM residues in bacterial cell walls and is, therefore, classified as a(an) O A. salt bridge, oxidoreductase O B. peptide bond; hydrolase OC. glycosidic linkage; oxidoreductase O D. glycosidic linkage, hydrolase O E. peptide bond; transferase

In a-c below, will the residue on the right-hand side increase or decrease the pKa of the residue on the left-hand side? Explain.

A sample of an unknown peptide was divided into two aliquots. One aliquot was treated with trypsin and the other was treated with cyanogen bromide. Given the following sequences (N-terminal to C-terminal) of the resulting fragments, deduce the sequence of the original peptide. Trypsin treatment Asn—Tyr—Asp—Met—Phe—Ala—Arg Asp—Trp—Asn—Arg Gln—Met—Tyr—Cys—Pro—Ile—Arg Gln—Cys Cyanogen bromide treatment Tyr—Cys—Pro—Ile—Arg—Asn—Tyr—Asp—Met   Asp—Trp—Asn—Arg—Gln—Met Phe—Ala—Arg—Gln—Cys

What enzyme catalyzes protein synthesis in bacteria? You discover a new broad-spectrum antibiotic that inhibits protein synthesis and named it Compound J. You want to determine the mechanism of action of Compound J. After treating bacteria cells with Compound J, you observe many ribosomes with long polypeptide chains bound to them. Based on this observation, make a hypothesis about which part of the ribosome Compound J is binding and how this specifically affects translation. What evidence supports that proper protein folding is essential to all domains of life? Name and describe the function/s of two specific molecules that help proteins fold in bacteria.

Given the following RNA molecule: 5' -CUUCAGCAC- 3' a. What amino acid sequence is coded for by this molecule? b. What is the amino acid sequence if a mutation converts CAC to AAC f. What occurs when a mutation converts CAG to UAG?

I’m stumped if either of the figures should be added. Could you please help?

Protease enzymes cleave proteins by hydrolyzing peptide bonds. The strategy for each type of metalloprotease begins with generating a nucleophile that attacks the peptide bond that attacks the peptide carbonyl group. Macmillan Learning On the basis of the information provided in the figure, show the next step in the mechanism for peptide-bond cleavage by a cysteine protease. H Cysteine proteases R₂ HN R₁ Draw curved arrows on the pre-drawn structures to show the cysteine protease mechanism. If you need to reset the structures, click More followed by Reset Drawing. Select Draw Templates Groups More N R2 H \.. C O S R1 Erase N