The Influence of Flanking Secondary Structures on Amino Acid Content and Typical Lengths of 3/10 Helices

Figure 3

Lengths of 3/10 helices (b, e) and flanking coil regions (a, c, d, f) situated between two beta strands (a, b, c) and between two alpha helices (d, e, f). For connecting bridges between two beta strands: BCI is a region of coil between beta strand and 3/10 helix; BIB is a 3/10 helix between two beta strands; ICB is a region of coil between 3/10 helix and beta strand. For connecting bridges between two alpha helices: HCI is a region of coil between alpha helix and 3/10 helix; HIH is a 3/10 helix between two alpha helices; ICH is a region of coil between 3/10 helix and alpha helix.

(a)

(b)

(c)

(d)

(e)

(f)