4- You have isolated a peptide, which you wish to sequence. First you treat thepeptide with CNBr and isolate two fragments. In a separate test of the peptide youcleave with trypsin and obtain 3 fragments. You sequence each of the five peptidesand get the following data:Peptide 1: VALKTQAMPeptide 2: LDGKMPeptide 3: TQAMPeptide 4: LDGKPeptide 5: MVALKThe sequence of the original peptide is:

For determination of which of the 20 possible amino acids are present in a particular protein, and…

Answered: Peptide 1: VALKTQAM Peptide 2: LDGKM…

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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nyiaial liio C cysteine stop phenylalanine serine tyrosine A leucine serine stop tryptophan arginine arginine arginine arginine leucine serine stop leucine proline histidine U histidine proline proline proline leucine C A glutamine glutamine asparagine asparagine lysine lysine aspartate aspartate glutamate glutamate leucine leucine isoleucine threonine serine isoleucine threonine serine C A arginine arginine glycine glycine glycine glycine isoleucine threonine A methionine threonine valine alanine valine alanine G A valine alanine valine alanine G What would be the sequence of amino acids based on the codons found on the following MRNA? 5' AUGCCCUAUAGGUGA3' leucine - Histidine - Arginine - Valine - Cysteine-Arginine | O Tyrosine - Glysine - Isoleucine - Serine - Methionine-Stop | O Methionine - Proline - Tyrosine - Arginine-Stop O Methionine - Proline -Proline - Valine-Stop |
sars-coV-2 spike protien what is the isoelectric point of this peptide? VGIYLQKTSDHRPEFALAMN
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In standard nomenclature, peptide sequences are read out in which direction? a) C to N b) 3’ to 5’ c) N to C d) 5’ to 3’
Sars-CoV-2 spike protein: VGIYLQKTSDHRPEFALAMN What is its isoelectric point of this peptide?
whats the amino acid squence for this
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)
5) Snake venom surprisingly has been a found to be a rich source of biologically active peptides. One important class of peptides includes the bradykinin potentiating peptides which were the precursors to today's most commonly used antihypertensive drugs such as captopril or lisinopril. Let's say that you are investigating a new peptide in the bradykinin potentiating peptide class from Agkistrodon bilineatus (Mexican pit viper) venom. You suspect that the peptide has the following sequence: QWAQGRAPHPP After some harrowing experiments, you've collected and isolated a sample of this peptide. How will you confirm that the sequence is what you expected? Describe a sequence of chemical tests (at least 4) that you can do on this peptide that should give you enough information to deduce the sequence. Be sure to describe in detail each of the chemical analyses and the expected results of each.

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Peptide 1: VALKTQAM Peptide 2: LDGKM Peptide 3: TQAM Peptide 4: LDGK Peptide 5: MVALK The sequence of the original peptide is: