please answer all true false and be accurate please thank you The shape of a pro
ID: 152207 • Letter: P
Question
please answer all true false and be accurate please thank you
The shape of a protein is specified (i.e., ultimately determined) by its amino acid sequence (T/F).
Each amino acid contributes two bonds to the backbone a polypeptide (T/F).
Proteins consist exclusively of L-amino acids (T/F).
Polar amino acids buried within the protein are usually hydrogen-bonded to other polar amino acids or to the polypeptide backbone (T/F).
Many thousands of proteins in a typical eukaryotic cell are modified by non-covalent (F).
addition of a phosphate group which is called protein phosphorylation (T).
Explanation / Answer
Answere :
1. The statement is true i.e. the shape of protein is specified by its amino acid sequence.
2. The statement is false i.e. Each amino acid contributes only a single bond to the backbone of polypeptides i.e. peptide bond formed by carboxyl group of one amino acid and amino group of another amino acid.
3. The statement is false i.e. Most proteins consist exclusively of L-amino acids but not all because some proteins also possesses D-amino acids. (e.g. - phosphophoryn, histome H2B, Osteocalcin etc.).
4. The statement is true i.e Polar amino acids buried within the proteins are usually hydrogen bonded to other polar amino acids or to the polypeptide chain.
5. Yes! The statement is false i.e. many thousands of proteins in a typical eukaryotic cell are modiefied by covlent interaction and not by non-covelent interaction.
6. Yes! The statement is true i.e. addition of a phosphate group is called protein phosphorylation.
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