Partial Characterization of Novel Bacteriocin SF1 Produced by Shigella flexneri and Their Lethal Activity on Members of Gut Microbiota

Table 3

Amino acid composition of bacteriocin SF1.

Aminoacid name	Symbols	Count
Alanine	A	86
Arginine	R	22
Asparginine	N	42
Aspartic acid	D	35
Cysteine	C	0
Glutamic acid	E	43
Glutamine	Q	23
Glycine	G	54
Histidine	H	6
Isoleucine	I	39
Leucine	L	41
Lysine	K	54
Methionine	M	17
Phenylalanine	F	15
Proline	P	14
Serine	S	42
Threonine	T	22
Tryptophan	W	7
Tyrosine	Y	14
Valine	V	43
Sequence length		619

In comparison with SF1, the colicin U of S. boydii showed 38 residues of glutamic acid and 28 of glutamine.