Page 78 - Color Atlas of Biochemistry

Peptides and Proteins 69

A. α Helix B. Collagen helix

C
C

0.15 nm 0.54 nm 0.29 nm 0.96 nm

N
N
ϕ = –57˚ –80˚ < ϕ < –50˚
ψ = –47˚ +130˚ < ψ < +155˚

C. Pleated-sheet structures

ϕ = –139˚ ϕ = –119˚
1. Antiparallel ψ = +135˚ 2. Parallel ψ = +113˚

D. β Turns

1. Type I N C 2. Type II N C

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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