From: Isolation and purification of Cu-free methanobactin from Methylosinus trichosporiumOB3b
1660 c m − 1 1030 c m − 1
1540 c m − 1 1030 c m − 1
1516 c m − 1 1030 c m − 1
( 1660 + 1540 + 1516 ) c m − 1 1030 c m − 1
Fraction 1
0.82
0.36
0.30
1.49
Fraction 2
0.73
0.37
1.47
Fraction 3
1.53
0.92
1.05
3.50
Fraction 4
0.56
0.34
1.21