The amino acid sequence of minke whale myoglobin has recently been determined. A partial sequence is given below. What is the net charge on this peptide at pH 4.0, 7.0, and 10.0?
Phe-Lys-His-Leu-Lys-Thr-Glu-Ala-Glu-Met-Lys-Ala-Ser-Glu-Asp
The answers are: +2.5 at pH 4, -1 at pH 7, and -2.3 at pH 10. How do you get these answers?
The answers are: +2.5 at pH 4, -1 at pH 7, and -2.3 at pH 10 can be calculated by using the below formula:
The net charge Z of a peptide at a certain pH can be estimated by calculating
where Ni are the number, and pKai the pKa
values, of the N-terminus and the side chains of Arginine, Lysine,
and Histidine. The j-index pertain to the C-terminus and
the Aspartic Acid, Glutamic Acid, Cysteine, Tyrosine amino
acids.
Innovagen's Peptide Property Calculator calculates the net charge
for all pH values of 0.1 to 14 in increments of 0.1, and plots
these producing a titration curve.
The amino acid sequence of minke whale myoglobin has recently been determined. A partial sequence is...
Table 1: Partial RPE65 protein sequence (amino acids 41-60) for the 9-year-old LCA patient. Unmutated Protein Sequence Patient's Allele 1 Protein Sequence Patient's Allele 2 Protein Sequence START...Ser-Leu-Leu-Arg-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP START...Ser-Leu-Leu-Gin-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP START...Ser-Leu-Leu-Gin-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP Table 2. Partial RPE65 protein sequence (amino acids 61-70 and 291–300) for the 11-year-old LCA patient. Unmutated Protein Sequence Patient's Allele 1 Protein Sequence Patient's Allele 2 Protein Sequence START...Phe-Asp-Gly-Gln-Ala-Leu-Leu-His-Lys-Phe...lle-Ala-Asp-Lys-Lys-Arg-Lys-Lys- Tyr-Leu...STOP START...Phe-Asp-Gly-Gln-Ala-Leu-Leu-Tyr-Lys-Phe...lle-Ala-Asp-Lys-Lys-Arg-Lys-Lys- Tyr-Leu...STOP START...Phe-Asp-Gly-Gln-Ala-Leu-Leu-His-Lys-Phe...lle-Ala-Asp-Lys-STOP Source: Data from Russell et al. (2017). Use Tables 1 and 2 to...
What amino acid would the Manticodon code for RNA codon table 2nd position Tot position СТА Tyr Phe Phe > eu eu Oulaa Jooo 9999 stop stop eu eu eu Let 0 - puchbucobucusura BER < Val Val Asp Ala Asp Ala Glu Ala Glu Amino Acids Keu Pro Pro His Weu Leu Gin lle Pro Thr Thr Thr Thr Asn Asn lle Ser Ser Arg lle Met Lys Lys bucoucouco Arg > Asp Asp Val Val Val Val Ala...
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Table 1: Partial RPE65 protein sequence (amino acids 41-60) for the 9-year-old LCA patient. Unmutated Protein Sequence Patient's Allele 1 Protein Sequence Patient's Allele 2 Protein Sequence START...Ser-Leu-Leu-Arg-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP START...Ser-Leu-Leu-Gin-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP START...Ser-Leu-Leu-Gin-Cyc-Gly-Pro-Gly-Leu-Phe-Glu-Val-Gly-Ser-Glu-Pro-Phe-Tyr- His-Gly...STOP Table 2. Partial RPE65 protein sequence (amino acids 61-70 and 291-300) for the 11-year-old LCA patient. Unmutated Protein Sequence Patient's Allele 1 Protein Sequence Patient's Allele 2 Protein Sequence START...Phe-Asp-Gly-Gln-Ala-Leu-Leu-His-Lys-Phe...lle-Ala-Asp-Lys-Lys-Arg-Lys-Lys- Tyr-Leu...STOP START...Phe-Asp-Gly-In-Ala-Leu-Leu-Tyr-Lys-Phe...Ile-Ala-Asp-Lys-Lys-Arg-Lys-Lys- Tyr-Leu...STOP START...Phe-Asp-Gly-Gln-Ala-Leu-Leu-His-Lys-Phe...lle-Ala-Asp-Lys-STOP Source: Data from Russell et al. (2017). Use Tables 1 and 2 to...
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On your internship, you visit the Mass Spectrometry Lab. Mass spectrometry can identify short peptide fragments based on their molecular weights. Your fellow intern Jerry has neglected to label his tubes of amyloid beta peptide 42 after digesting them with some proteases that we learned about in Module 6: pepsin, trypsin, and chymotrypsin. Help him figure out what protease is in each tube. Jerry’s supervisor has the fragments listed in the same order as the original peptide primary sequence, which...
please explain how to solve this problem, the answer is provided 9. Peptides: (20 pts.). A polypeptide (X) gives 7 fragments when treated with chymotrypsin (A-G). The same peptide also gives 9 fragments when treated with trypsin (I- IX). After Chymotrypsin A) Thr-Thr-Tyr-Ala-Gly-Phe-Phe-Ile-Asp- Lys B) Ala-Cys-Pro-Leu-Tyr-Gin-lle-Arg C) Met-Ser-Thr-Tyr-Pro-Gly-Arg D) Cys-Leu-Val-Phe-Ile-Lys E) Leu-Ala-Trp-Gly-Val F) Ser-Phe-Ala-Pro-Lys G) Met-Asp-Lys Afier Trypsin I) Ala-Pro-Lys-Met-Asp-Lys-Thr-Thr-Tyr II) Pro-Gly-Arg-Cys-Leu-Val-Phe III) Ile-Lys-Ala-Cys-Pro-Leu-Tyr IV) Ile-Asp-Lys-Met-Ser-Thr-Tyr V) Gin-Ile-Arg-Leu-Ala-Trp VIAla-Gly-Phe VII) Gly-Val VIII) Ser-Phe LX) Phe A) What is the primary...
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"A protein is made from a messenger RNA of the following sequence. What is the sequence of amino acids for this protein? (Remember, a start and a stop codon are needed for a protein to be made). 3' G C C G A U G G A U G A A G U U U U A A A G U A A U A G C A A U G G A G G A C 5'" (amino) met...
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