A solution of peptide of unknown sequence was divided into 2 samples. One sample was treatedwith trypsin and the other one with pepsin. The fragments produced are given below:TRYPSINA. Pro-Gly-Met-Phe-Leu-ArgB. Gln-Ile-Pro-LysC. Ala-Gly-Trp-LysPEPSINA. Phe-Leu-Arg-Ala-GlyВ. Pro-Gly-MetС. Тrр-Lys-Gln-Пе-Pro-LysDeduce the original polypeptide chain.

Site specific proteases are enzymes that cleaves polypeptide chains only at specific sites i.e. at…

Answered: A solution of peptide of unknown…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

1. The amino acid sequence for the protein lysozyme is given below. Estimate the isoelectric point for lysozyme protein. The pK, values are provided in Table 3.1. KVFGRCELAAAMKRHGLDNYRGYSLGNWVCAAKFESNFNTQATNRNT DGSTDYGILQINSRWWCNDGRTPGSRNLCNIPCSALLSSDITASVNCAKK IVSDGNGMNAWVAWRNRCKGTDVQAWIRGCRL Here's the sequence in this form: LYS VAL PHE GLY ARG CYS GLU LEU ALA ALA ALA MET LYS ARG HIS GLY Table 3.1 Typical pk, values of ionizable groups in proteins Group Acid Typical pK, Base Terminal a-carboxyl 3.1 group Aspartic acid Glutamic acid 4.1 N. Histidine 6.0 -N + H Terminal a-amino group 8.0 Cysteine 8.3 Тутosine 10.9 + H Lysine 10.8 H H. + N-H Arginine 12.5 N-H N-H Note: Values of pk, depend on temperature, ionic strength, and the microenvironment of the ionizable group. in
Draw the peptide at a pH @1 of Cys-His-Glu-Met-Ile-Ser-Thr-Arg-Tyr
Which of the following enzymes adds a new amino acid to the growing chain of a protein during protein synthesis? a. aminoacyl-tRNA synthetase b. peptidyl synthetase c. peptidyl transferase d. ribosomal synthetase
Consider this sequence below: GAG TAC ACG AGT GGA Which of the following options is an example of a non-synonymous point mutation? (remember to translate to mRNA!) A. GAG TAC AAT CGA GTG GA B. GAG TAC ACG GGT GGA C. GAG TAC A–G AGT GGA D. GAG TAC ACG AGA GGA
Why are structural analogs of sugar molecules (such as Oseltamivir and zanamivir) effective in treatment of influenza-virus infection?
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?
If you have the same protein loaded in two different lanes of an SDS-PAGE stained with Coomasie blue, and one lane has a darker, thicker band of protein than the other lane, can you say that there is more protein in the lane with the darker band? Why or why not?
Human cells contain a protein that binds to the 5′ triphosphate groups of RNA. Explain why this protein would be part of the defense against viral infection.
What is the first amino acid encoded in your protein? A. Methionine B. Asparagine C. Proline D. Cysteine Gene Sequence (5'-to-3'): atggaccacctcggggcgtccctctggccccaggtcggctccctttgtctcctgctcgctggggccgcctgggcgcccccgcctaacctcc cggaccccaagttcgagagcaaagcggccttgctggcggcccgggggcccgaagagcttctgtgcttcaccgagcggttggaggactt ggtgtgtttctgggaggaagcggcgagcgctggggtgggcccgggcaactacagcttctcctaccagctcgaggatgagccatggaag ctgtgtcgcctgcaccaggctcccacggctcgtggtgcggtgcgcttctggtgttcgctgcctacagccgacacgtcgagcttcgtgcccct agagttgcgcgtcacagcagcctccggcgctccgcgatatcaccgtgtcatccacatcaatgaagtagtgctcctagacgcccccgtgg ggctggtggcgcggttggctgacgagagcggccacgtagtgttgcgctggctcccgccgcctgagacacccatgacgtctcacatccgc tacgaggtggacgtctcggccggcaacggcgcagggagcgtacagagggtggagatcctggagggccgcaccgagtgtgtgctgag caacctgcggggccggacgcgctacaccttcgccgtccgcgcgcgtatggctgagccgagcttcggcggcttctggagcgcctggtcg gagcctgtgtcgctgctgacgcctagcgacctggaccccctcatcctgacgctctccctcatcctcgtggtcatcctggtgctgctgaccgtg…
A researcher has synthesized two peptides and needs to confirm whether the peptides were synthesized with the correct sequence using mass spectrometry. What is the sequence of the b4 and y7 ions for peptide GAMECHANGER? The peptide SLISRAEFLAGVRVGV is digested with trypsin. Then the products of the digestion are subjected to ESI TOF-MS in positive ion mode with the peptides in a pH 2 solution. What peptide fragments will result and what are their m/z?
Classify the symmetrical arrangement ofthe subunits (e.g., C2 , C3 , D 2 , helical, icosahedral). 1. Proteobacterial nitrite sensor (3PNS):2. Pseudomonad oligosaccharide receptor (7POR):3. Adenoviral structural protein (8ASP)
What is the role of a protease? Why is chymotrypsin considered to be a serine protease?

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