Choose the structure of phosphatidylcholine from those shown below ON< R₁ R₁ R2 R₂ X NH3 OH A B I
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- Draw the structure of phosphatidylcholine at pH 7 with the moiety on R₁ as 14:0 (C14) and R₂ as 12:2cis,cis-A6,9. Put an X on the bond cleaved by Phospholipase C.The melanocyte-stimulating peptide hormone α-melanotropin has the following sequence: Ser–Tyr–Ser–Met–Glu–His–Phe–Arg–Trp–Gly–Lys–Pro–Val(a) Write the sequence using the one-letter abbreviations.(b) Calculate the molecular weight of α-melanotropin, using data in as shown.Given lecithin, sphingomyelin, cephalin, phosphatidylcholine which of the following does not contain glycerol as a backbone?
- Draw the structure of a saturated fatty acid group in phosphatidylcholine (or give its stoichiometry)*H3N -Č-H CH2 он Tyrosine a. Draw the structures of tyrosine as different pH values. Please refer to the lecture notes for the pKa values b. Identify the structures that exist at pH 2 c. Solve for the plThe melanocyte-stimulating peptide hormone a-melanotropin has the following sequence:Ser–Tyr–Ser–Met–Glu–His–Phe–Arg–Trp–Gly–Lys–Pro–Val(a) Write the sequence using the one-letter abbreviations.(b) Calculate the molecular weight of a-melanotropin, using data inTable
- Draw the L(leucine)-A(alanine)-E(glutamate) triple tide and calculate its isoelectric point.C00- *H3N -C-H CH2 он Tyrosine a. Draw the structures of tyrosine as different pH values. Please refer to the lecture notes for the pKa values b. Identify the structures that exist at pH 2 c. Solve for the plcompare the structures of the peptide neurotransmitters Met-enkephalin and Leu-enkephalin