How many amino acid residues are there in per turn of ‚âà√≠¬�

1.	How many amino acid residues are there in per turn of ‚âà√≠¬¨¬±-helix?$#
A.	3.6
B.	4.6
C.	3.0
D.	2.5
Answer» B. 4.6

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