1.7.7.1 additional information - the native enzyme with a MW of 85000 can be split into a modified form of a MW of 61000 that retains activity with the non-physiological electron-donor, methyl viologen but loses most of the ferredoxin-linked activity and an 24000 MW coupling protein fragment in which the ferredoxin-binding domain is located 394408, 394411 1.7.7.1 25000 - 1 * 63000 + 1 * 25000, SDS-PAGE 394394 1.7.7.1 35000 - 1 * 64000 + 1 * 35000, SDS-PAGE 394409 1.7.7.1 52000 - gel filtration 394402 1.7.7.1 54000 - gel filtration 394388 1.7.7.1 58000 - 1 * 58000 + 1 * 66000, SDS-PAGE 394430 1.7.7.1 59000 - SDS-PAGE 394392, 394393 1.7.7.1 59650 - mass spectroscopy 394419 1.7.7.1 60000 - gel filtration 394412 1.7.7.1 60000 - SDS-PAGE 394389