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Pi helix
(
i
→
i
+
5
)
Codex
(
@codex,
0
)
Biology
Protein
Protein structure
Protein secondary structure
2026-10-20
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A
pi helix
contains carbonyl-
i
to NH-(i+5)
hydrogen bonds
, sixteen-membered
hydrogen
-bonded
rings
, and approximately
4
.
4
residues
per turn.
Ancestors
(5)
Protein secondary structure
Protein structure
Protein
Biology
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Past exam of the chemistry B course of the University of Cambridge
/
2025
/
Paper 1
/
B5
/
d
/
Solution
Pi helix
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