1.18.6.2 vnfD, VnfDG, vnfG, vnfK, VnfY - -, 744180, 745204, 745846 1.18.6.2 vnfD alpha-chain -, 744007, 744257, 744258, 744260, 744261, 744787 1.18.6.2 vnfK beta-chain -, 744007, 744257, 744258, 744260, 744261, 744787 1.18.6.2 NifB cf. EC 1.18.6.1 745197 1.18.6.2 vnfG delta-chain -, 744007, 744257, 744258, 744260, 744261, 744787