ID 6.3.5.9 DE hydrogenobyrinic acid a,c-diamide synthase (glutamine-hydrolyzing). CA 2 ATP + 2 H2O + hydrogenobyrinate + 2 L-glutamine = 2 ADP + 2 H(+) + CA hydrogenobyrinate a,c-diamide + 2 L-glutamate + 2 phosphate. CC -!- This enzyme, which participates in the aerobic (late cobalt CC insertion) cobalamin biosynthesis pathway, generates CC hydrogenobyrinate a,c-diamide, the substrate required by EC 6.6.1.2 CC which adds cobalt to the macrocycle. CC -!- The equivalent reaction in the anaerobic cobalamin biosynthesis CC pathway is catalyzed by EC 6.3.5.11. DR Q8UBQ8, COBB_AGRFC ; A6X051, COBB_BRUA4 ; Q57CK2, COBB_BRUAB ; DR Q8YHU1, COBB_BRUME ; A5VR62, COBB_BRUO2 ; Q8G020, COBB_BRUSU ; DR P63836, COBB_MYCBO ; P9WP96, COBB_MYCTO ; P9WP97, COBB_MYCTU ; DR Q9I471, COBB_PSEAE ; Q98KP1, COBB_RHILO ; Q92P48, COBB_RHIME ; DR O68108, COBB_RHOCB ; P21632, COBB_SINSX ; Q9RJ16, COBB_STRCO ; DR A4VJ35, COBB_STUS1 ; Q47T68, COBB_THEFY ; //