Write the structure of the following peptides Expanded structure. Use any other ink for peptide bond. [For your reference download all the amino acids with the three and single letter symbol] a) leucyl glycyl leucyl alanine b) histidyl tyrosyl alanyl glycine c) glycyl phenylalanyl tyrosyl seryl histidine

Consider a short peptide with the sequence M-C-Q-L-Y-P-E-D-K. List the ionizable groups in this peptide, and the net charge of the whole peptide at pH a) 1.5, b) 7.0, and c)12.0.

At what pH can you separate the following peptides: ala-ala-ala, glu-glu-glu, his-his-his? OA 2.0 B. 4.0 C. 5.0 O D. 7.0 E. 9.5

Consider each dipeptide. Part: 0 / 4 Part 1 of 4 HO || H H H3N C-C-N-C-COO Identify the amino acid(s) present in this structure. Check all that apply. U U U glycine cysteine valine alanine Ophenylalanine ☐ U U asparagine tyrosine threonine leucine glutamine serine ☐ isoleucine methionine None of the above X

What would be the structural formula of the oligopeptide if the amino acids are arginine, glutamine, glycine, methionine and glutamic acid considering the first amino acid is the N-terminus

can u help me