Styles A decapeptide has the following amina acid composition: Arg. Asp, Gly, Leu, Lys, Met, Phe,...
5. Consider the following peptide: His-Ser-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Arg-Arg-Ala-Gin- Asp-Phe-Val-Gln-Trp-Leu-Met-Asn-Thr a. What are the fragments, if it is cleaved by trypsin? b. What are the fragments, if it is cleaved by chymotrypsin? c. What are the fragments, if it is cleaved by pepsin?
Which of these protein sequences is most likely to span a cell membrane? Gly-Asp-Val-Ala-Gly-Arg-Gly-Asn-Gly-Lys-Lys-Pro-Ser-Ser-Val-Arg-Ala-Leu-Ser Ile-Val-Leu-Pro-Ile-Val-Leu-Leu-Val-Phe-Leu-Cys-Leu-Gly-Val-Phe-Leu-Leu-Trp Lys-Asn-Trp-Arg-Leu-Lys-Asn-Ile-Asn-ser-Ile-Asn-Phe-Asp-Asn-Pro-Val-Tyr-Gln A. 773 B. 792 C. 811
Complete hydrolysis of an unknown basic decapeptide gives Gly, Ala, Leu, Ile, Phe, Tyr, Glu, Arg, Lys, and Ser. Problem 24-44 ConstantsI Periodic Table Complete hydrolysis of an unknown basic decapeptide gives Gly, Ala, Leu, lle, Phe, Tyr, Glu, Arg, Lys, and Ser. Terminal residue analysis shows that the N terminus is Ala and the C terminus is lle. Incubation of the decapeptide with chymotrypsin gives two tripeptides, A and B, and a tetrapeptide, C. Amino acid analysis shows that...
What fragments will be obtained by a trypsin hydrolysis of the following octapeptide? Ala-Val-Trp-Lys-Phe-Gly-Arg-Met A) Ala-Val-Trp-Lys-Phe and Gly-Arg-Met 3) Ala-Val-Trp-Lys-Phe-Gly and Arg-Met - Ala-Val-Trp-Lys and Phe-Gly-Arg and Met ) Ala-Val-Trp-Lys and Phe and Gly-Arg and Met ) Ala-Val-Trp and Lys-Phe-Gly and Arg-Met Bradykinin is a nonapeptide, Arg-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Arg. In addition to one mole of Arg, what peptides are present after hydrolysis of bradykinin with chymotrypsin? A) Arg-Pro-Pro and Gly-Phe and Ser-Pro-Phe B) Pro-Pro-Gly and Phe-Ser-Pro-Phe-Arg C) Arg-Pro-Pro-Gly-Phe and Ser-Pro-Phe ?) Arg-Pro-Pro-Gly-Phe-Ser...
biochemistry please show your work 2. A mutant form of polypeptide hormone angiotensin II has the amino acid composition: Ile, Arg, Met, Leu, Phe, Asp, Tyr, and Val. The following observations are made: 1) Treatment with trypsin yields a dipeptide containing Asp and Arg, and a hexapeptide with all the rest. 2) Cyanogen bromide yields a dipeptide containing Phe and Leu and a hexapeptide containing all the rest. 3) Chymotrypsin cleaves the hormone into two tetrapeptides of composition: Val, Tyr,...
Deduce the sequence of a heptapeptide that contains the amino acids Met, Gln, Phe, Leu, Cys, Val, and Arg, from the following experimental data. Edman degradation cleaves Cys from the heptapeptide, and carboxypeptidase forms Gln and a hexapeptide. Treatment of the heptapeptide with chymotrypsin forms a hexapeptide and a single amino acid. Treatment of the heptapeptide with trypsin forms a pentapeptide and a dipeptide. Partial hydrolysis forms Gln, Cys, Phe, and the tripeptides Leu-Met-Val and Met-Val-Arg. Be sure to answer...
3. Amino acid analysis of a peptide seven residues long gave: Asp, Leu, Lys, Met, Phe, Tyr The following facts were observed: a. Trypsin treatment had no apparent effect b. Reaction with phenylisothiocyanate reagent yielded PTH-Phe c. Treatment with chymotrypsin yielded several products, including a dipeptide and a tetrapeptide. The amino acid composition of the tetrapeptide was Leu, Lys and Met. d. Cyanogen bromide treatment yielded a dipeptide, a tetrapeptide, and free lysine. What is the...
. A nonapeptide was treated with 6N HCl at 110 oC for 24 hours and was determined to have the following amino acid composition: (Lys)2, (Gly)2, Met, Leu, (Phe)2, His. The native peptide was incubated with 1-fluoro-2,4-dinitrobenzene (FDNB) and then, hydrolyzed by a strong acid. 2,4-Dinitrophenylhistidine derivative was identified by the HPLC. When the native peptide was exposed to cyanogen bromide (CNBr), an octapeptide and a free glycine were recovered. Incubation of the native peptide with trypsin gave a pentapeptide,...
How to do this problem? 1.A 14 AA peptide contains: Ala, Arg,, Gly, His, Leu, Lys, Phez, Serz, Trp, Tyr, Val This peptide yields the following results when broken down into smaller fragments Please note the AA are given in alphabetical order). Show your work, explain your reasoning, give the answer in three letter abbreviation and one letter abbreviation Fragment Content His Treatment Edman Chymotrypsin Gly. His, Phe Ser, Tyr Arg2, Leu, Lys, Ser.Ala, Phe Trp, Val Gly, His, Lys,...
How to do this problem? 1.A 14 AA peptide contains: Ala, Arg,, Gly, His, Leu, Lys, Phez, Serz, Trp, Tyr, Val This peptide yields the following results when broken down into smaller fragments Please note the AA are given in alphabetical order). Show your work, explain your reasoning, give the answer in three letter abbreviation and one letter abbreviation Fragment Content His Treatment Edman Chymotrypsin Gly. His, Phe Ser, Tyr Arg2, Leu, Lys, Ser.Ala, Phe Trp, Val Gly, His, Lys,...