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Mutation identity- GLY
Outline the effects the mutation of cysteine with GLY on the 3D structure and function of the 3GRS glucathione reducatse protein.
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- Mutation identity- GLY Outline the effects the mutation will have on the 3D structure and function of the 3GRS glucathione reducatse protein.Drawing the Structure of a Glycopeptide (Integrates with Chapters 4and 5.) Consider the peptide DGNILSR, where N has a covalentlylinked galactose and S has a covalently linked glucose. Draw thestructure of this glycopeptide, and also draw titration curves for theglycopeptide and for the free peptide that would result from hydrolysis of the two sugar residues.Reposting - What would the tertiary structure of the dipeptide Asp-Ser be if it was made into a polypeptide chain? (Would it form a beta pleated sheet, an alpha helix, etc) Why would it do this? What properties of this polypeptide causes this? This sub part still needs to be solved - What would the tertiary structure of Pro-ala and Glycl-L-alanine be?
- Serine protease enzyme mutation To show differences in the effect of the nucleophilic attack of the carbonyl group (C=O) of peptide bond between the catalytic triad of serine, histidine and aspartic acid, and another catalytic triad contains alanine, histidine and aspartic acid Provide/ draw an example of catalytic mechanism with catalytic triad contains alanine, histidine and aspartic Please answer completely will give rating surelyIonization State of Histidine.Each ionizable group of an amino acid can exist in one of two states, charged or neutral. The electric charge on the functional group is determined by the relationship between its pKa and the pH of the solution. This relationship is described by the Henderson-Hasselbalch equation. 1.Histidine has three ionizable functional groups. Write the equilibrium equations for its three ion-izationsand assign the proper pKa for each ionization. Draw the structure of histidine in each ionization state.What is the net charge on the histidine molecule in each ionization state? 2.Which structure drawn in (1) corresponds to theionization state of histidine at pH 1, 4, 8, and12?Note that the ionization state can be approximated by treating each ionizable group independently. 3.What is the net charge of histidine at pH 1, 4, 8, and 12? For each pH, will histidine migrate to-ward the anode (+) or cathode (-) when placed in an electric field?Peptide mass determination. You have isolated a proteinfrom the bacterium E. coli and seek to confirm its identityby trypsin digestion and mass spectrometry. Determinationof the masses of several peptide fragments has enabled youto deduce the identity of the protein. However, there is adiscrepancy with one of the peptide fragments, whichyou believe should have the sequence MLNSFK and an(M 1 H)1 value of 739.38. In your experiments, yourepeat edly obtain an (M 1 H)1 value of 767.38. What isthe cause of this discrepancy and what does it tell youabout the region of the protein from which this peptide isderived?
- Play (k) H. HO. H-C--OH H. The mmonONICchvide shownCan be relerred to a HOHO tetroseNOTE: PLEASE SEND. CLEARER IMAGE PLEASE THANK YOU SOMUCH 2. Structural representation of tetrapeptide Phe-Met-Tyr-Asnwhat is lactose intolerance ? describe the molecular life cycle for this disease. also describe how it occurs in a molecular level detailed mechanism. what causes this disease and how it develops ? provide detailed biochemical phenomena and life cycle for Lactose Intolerance condition.
- Not the best with titration curves. Identify the position on the following diprotic titration drive where the amino acid has no net charge.Structures of L-Cysteine from highly protonated to depronated form. Note Structure A as themost protonated form. Based on the table, 1. Show charges and pKa summary then calculate for pI value.Cyclic forms of D-glucose: Haworth formula The furanose and pyranose forms of D-glucose can be presented using Haworth formula. The following templates are used for this formula. Note the numbering of the carbon atoms and the anomeric carbon (this carbon defines the alpha and beta isomer). Furanose template (furan) Pyranose template (pyran) anomeric carbon anomeric carbon Compare the Fisher and Haworth formula of D-glucofuranose and D-glucopyranose. Notice that the groups attached to C-1, C-2, and C-3 on the left side of the Fisher formula are written above the plane of the furanose template. Fisher formula Haworth formula H FOH H-2 HOH,č 5 -OH FOH- H HO-3H 4 он H 1 H-4 H-5 H OH 3 6 CH2OH H OH Alpha-D-glucofuranose Alpha-D-glucofuranose HOH2C- он OH но H FOH- OH Но H H. OH H ČH2OH Beta-D-glucofuranose Beta-D-glucofuranose