cis content of Xaa-Pro bonds in peptides and proteins
 
Xaa
cis content a) (%)
cis Xaa-Pro b) (%)
Ala
7.7
5.0
Cys
8.7
3.5
Asp
7.3
3.1
Glu
9.0
5.3
Phe
23.0
7.2
Gly
13.7
7.4
His
16.5 c)
-
His
9.5 d)
4.1
Ile 
12.0
1.8
Lys
6.8
4.0
Leu
12.0
3.4
Met
10.0
3.7
Asn
11.6
4.4
Pro
6.0
9.3
Gln
11.5
4.7
Arg
7.2
4.9
Ser
10.3
4.7
Thr
9.4
2.9
Val
10.4
2.6
Tyr
24.0
9.7
Tyr
36.0 e)
-
Trp
37.7
12.4
 

a) NMR data measured at pH 3.5 c), pH 8.0 d), pH 11.0 e)

b) derived from protein structures [25% list from the Brookhaven PDB]
 

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