006 - 20[4 Name an amino acid among the repertoire of 20...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 20. [4] Name an amino acid among the repertoire of 20 amino acids found in proteins that can absorb light with a wavelength of 280 nm. Lt Wm$IM 21. [4] Which amino acid from the set of 20 has a cyclic structure in which its side chain is covalently bonded to both the amino group and the a carbon atom? Lt @mww. 22. [6] Draw the complete chemical structure of histidine (His). Make sure that your structure shows the major ionic species present in an aqueous solution at pH 4.5. O @Ham» C ’ C(@ o 23. [4] Examine the sequence of the five peptides shown below and answer the following questions about their properties using the numbers assigned to each peptide: 1aALg=Lys-Met 2- Gly-Asn-Arg ‘S-Aep-fip-Ala 4—Asp—Gl-n—Ala—Gflu firteu-VaisAla A. Which e tidep: most posrtlvel char dat pH 7? AQ' 1\ 77 B. Which peptidea ha m'no aci with an a omatic side chain? are 969—61" 0t C. Which peptide contains the argest number of nonpolar R groups? 4‘5 LUJI \lmv Mar D. Which peptide contains sulfur? 4* I: M03 Lxls met 24. [4]}xplain why the peptide bond' Is planar? A TMWW IS phmr'mauge Orl idol} “Hrs Norms N OOWPerih (W ’V mien WI OIA 0W%lef$ OP 0: "a W. \l’ =1 +85 , i f -5- Fort/mi aouble bond characlcec- /O ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern