{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

BIBC 100 Discussion M 2-3 week 2 answer key

BIBC 100 Discussion M 2-3 week 2 answer key - right on top...

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

View Full Document Right Arrow Icon
1) Draw what the amino acid will look like (which groups are protonated), and the overall charge of the aa at each labeled point. 2) With respect to an α-helix of the sequence N—AAAAAAAA—C, are the following α-helices more or less stable, and why? All Sequences are written N to C terminus, left to right. Sequence EAAEAAAA DAAAAAAK AAPAAAGA RAAAAAAE ARAAADAA AAWAAAWA More/Less less more less less more less Reason Electrostatic repulsion Neutralizing the dipole Proline and Glycine are present + at N term and – at C term will destabilize + residue and – residue are 4 aa apart, their side chains interact (electrostatic attraction) Steric hindrance – tryptophan is the biggest aa, and they are 4 residues apart
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: right on top of each other 3) (based off Lehn. 4-3) Hair grows at a rate of 0.3 mm/day. All this growth is concentrated at the base of the hair fiber, where -keratin filaments are synthesized inside living epidermal cells and assembled into ropelike structures. The fundamental structural element of -keratin is the -helix. Using what you know about the dimensions of an -helix, about how many amino acids would be added to a hair in one day, and what would the estimated MW be for these added amino acids? You only need to set up this problem. 0.3x10-3 m 1 1 turn 3.6 aa Day 10-10 m 5.4 1 turn Glutamate Histidine A B C D A B C D +1 0 -1 -2 A B D C A B C D = # of aa x 110 = MW...
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