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- Translate the following DNA sequence into amino acids 5'ATAGTACCGCAAATTTATCGCT3 O met-ala-phe-lys-stop O met-ala-phe-lys- met-tyr-his-gly-val-stop-met-gly O met-ala-ser-gly-thr-stop O tyr-his gly-val-stop-met-ly O ala-phe-lys stopCell wall bullding block D-Ala-D-Alal-Lys-tail NH,Me Heptapeptide backbone R1 R. R2 ii) With the aid of the figure above showing the important features of the binding of Vancomycin (lower part) to a bacterial cell wall peptia discuss the antibiotic effect of Vancomycin. i) Vancomycin resistant strains often have a mutation in which one of the D-Ala moieties is exchanged to a D-lactate moiety. Discuss why this mutation makes the strain Vancomycin- resistant but still viable. iv) Glycoconjugate vaccines based on bacterial capsular polysaccharides have been used for 30 years without any need for changes in their structures, while the flu vaccine, based on attenuated or killed virus particles, requires many different structures and a check each time when there is an epidemic that the right vaccine is used. Discuss the reason behind this.Drag the labels onto the diagram to identify the anatomical terminology describing body orientation and direction (human a Posterior (caudal) Distal Superior (dorsal) Proximal Inferior (caudal) Anterior (ventral) Posterior (dorsal) Pearson arch
- The octapeptide gly-cys-met-asn-lys-ala-tyr-gly was hydrolyzed consecutively by CNBr and then trypsin (3 fragments total). The mixture of fragments was buffered at a pH 8.5 and then chromatographed on an anion-exchanger (positive resin) with the same buffer. Draw sequence (abbreviated form) of all fragments at that pH (show charges) and predict elution order.A At pH 5, what is the net charge of the peptide Val-His-Gln-Cys-Ser-Lys? 0 -1 0 0+1 Ⓒ +2 Q Search "de 96 5 ******* ******* 131183 J- C 8 a hpNAZO NHZ Ala-Cys-Glu -Tyr - Trp - Lys - Arg - His -Pro-G ly Glu pka 4.15 SH Tyr 10.10 Draw Charges Lys 10.67 Olt A3 12.10 +NH₂ Ntrm 2) Calculate net charge 3) write out I letter code 300 Ctim 3 juli of peptich (above) Ⓒ pH; 1,7,12
- Determining the amino acid sequence in a protein usually in- volves treating the protein with various reagents that break up the protein into smaller fragments that can be individually sequenced. Treating a particular 11-amino acid polypeptide with one reagent produced the fragments: Ala-Leu-Phe-Gly-Asn-Lys Trp-Glu-Cys Gly-Arg Treating the same polypeptide with a different reagent pro- duced the fragments: Glu-Cys Gly-Asn-Lys-Trp Gly-Arg-Ala-Leu-Phe What is the amino acid sequence of the polypeptide?Why is COVID-19 a man made? (Brief explanation only atleast 3-5 sentences)Antiparallel B sheet 寧 ; Ala side chains Gly side chains Figure 4-14a Lehninger Principles of Biochemistry, Seventh Edition 2017 W. H. Freeman and Company The structure of spider silk is shown above. Mutating the alanine residues to arginine is expected to disrupt the beta sheet structure. Please provide two reasons why mutating the alanine residues to arginine would be expected to disrupt the beta sheet structure.
- Please help! Sketch a titration curve of the peptide Ala-Tyr-Gln-Met-Asp-His from pH=0 to 14 up to 5 equivalnets of KOH (Please type answer)Thr-Lys-Pro-Ile-Val-Ala-Pro-Met-Glu-Tyr-Gly-Lys Write the sequence using one-letter abbreviations. sequence: TLPIVAPMGYGK Incorrect Estimate the net charge on the peptide at pH 7. charge at pH 7: +1 Estimate the net charge on the peptide at pH 12. charge at pH 12: 0 IncorrectI. A protein, X, was Isolated from a pathogenlc mlcroorganism. The proteln Is a vlrulence factor whose path0genlclty lies In a heptapeptide of unknown sequence. After trypsin cleavage of the heptapeptide from protein X, the peptlde's compOsition and sequence was determined. The fOllowing were the results of the sequenclng process: 1. When the peptide was treated with dinitrofluorobenzene (DNFB), DNP-asp and a mixture of amino acids were produced. 2. When the same Intact peptide was treated with streptococcal protease, a pentapeptide of composition asp, asN, cys, gly and ser and 2 amlno acids were released. 3. When the heptapeptlde was also treated with hydrOxylamine HCI, a tripeptide and a tetrapeptide were obtained. The C-terminal amino acid of the tripeptide was asN. 1) What is the sequence of the heptapeptide if it is composed of cys, asp, lys, asN, gly and ser only? 2) What is the pl of the heptapeptide?