MBB 222 Study Guide - Final Guide: Alpha Helix, Aromatic Amino Acids, Beta Sheet

72 views3 pages

Document Summary

Mbb222 exam vocab definitions: alpha-helix / beta-strands and helical propensity. Local = refers to zoomed in" structure, can identify the secondary structure (ex. Long-range = refers to tertiary structure interactions (zoomed out) This occurs when each dihedral angle (phi and psi) remain the same or nearly the same throughout the segment. Approximately the length of a typical c-h bond. It is not an si unit but is used universally to describe atomic distances. An important interaction in alpha-helices where the polypeptide backbone is tightly wound around an imaginary axis drawn longitudinally through the middle of the helix. R groups protrude outwards from the helical backbone. The alpha helix structure maximizes the use of internal hydrogen bonding about its axis and also does it optimally. For this reason, the alpha helix forms more readily than other possible conformations. U8-04 must helical wheel (end-on view of helix) This is the view of looking down the longitudinal axis of the alpha helix.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers

Related Documents