vnfK Dinitrogenase 2 subunit beta This vanadium-iron protein is part of the nitrogenase complex that catalyzes the key enzymatic reactions in nitrogen fixation. Nitrogenase vanadium-iron protein beta chain VNFK_AZOVI MSNCELTVLKPAEVKLSPRDREGIINPMYDCQPAGAQYAGIGIKDCIPLVHGGQGCTMFVRLLFAQHFKENFDVASTSLHEESAVFGGAKRVEEGVLVLARRYPNLRVIPIITTCSTEVIGDDIEGSIRVCNRALEAEFPDRKIYLAPVHTPSFKGSHVTGYAECVKSVFKTITDAHGKGQPSGKLNVFPGWVNPGDVVLLKRYFKEMDVEANIYMDTEDFDSPMLPNKSIETHGRTTVEDIADSANALATLSLARYEGNTTGELLQKTFAVPNALVNTPYGIKNTDDMLRKIAEVTGKEIPESLVRERGIALDALADLAHMFFANKKVAIFGHPDLVLGLAQFCMEVELEPVLLLIGDDQGNKYKKDPRIEELKNTAHFDIEIVHNADLWELEKRINAGLQLDLIMGHSKGRYVAIEANIPMVRVGFPTFDRAGLYRKPSIGYQGAMELGEMIANAMFAHMEYTRNKEWILNTW 475 Nitrogenase component I