From: pi-Turns: types, systematics and the context of their occurrence in protein structures
 | Secondary structures at positionsb |  |  | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Turn | i-1 | i | i+1 | i+2 | i+3 | i+4 | i+5 | i+6 | Number | Percentagec |
Ï€-HB | ||||||||||
AAAa | E | E | T | T | T | T | E | E | 245 | 70 |
PgAA | C | C | B | T | T | T | B | C | 8 | 15 |
pAAa | E | E | T | T | T | T | E | E | 10 | 42 |
Ï€-NHB | ||||||||||
AEAA | E | E | S | S | T | T | S | C | 14 | 4 |
 | H | H | T | S | T | T | C | C | 13 | 4 |
 | E | E | S | S | T | T | C | C | 12 | 4 |
 | C | T | T | S | T | T | C | C | 12 | 4 |
EAAa | E | E | C | T | T | S | C | E | 86 | 31 |
 | E | E | C | T | T | C | C | E | 68 | 24 |
 | C | B | C | T | T | S | C | B | 16 | 6 |
EAAA | C | C | C | T | T | T | H | H | 13 | 6 |
EAAE | E | E | C | S | S | C | E | E | 73 | 41 |
AAaA | E | C | T | T | S | S | E | E | 47 | 28 |
 | E | C | T | T | S | S | C | E | 13 | 8 |
AEEa | H | H | T | S | T | T | C | C | 10 | 6 |
 | C | T | T | S | T | T | C | C | 10 | 6 |