Known 3Fe-4S ferredoxin subtypes

Subtype Number of sequences
ST1 34
ST2 54
ST3 15
ST4 3
ST8 6
ST9 3
ST10 1
ST11 40
ST16 2
ST7 4
ST6 4
ST12 3
ST14 6
ST13 1
ST19 1
ST20 1
ST18 1
ST15 3