ID 6.3.2.33 DE tetrahydrosarcinapterin synthase. CA 5,6,7,8-tetrahydromethanopterin + ATP + L-glutamate = 5,6,7,8- CA tetrahydrosarcinapterin + ADP + H(+) + phosphate. CC -!- This enzyme catalyzes the biosynthesis of 5,6,7,8- CC tetrahydrosarcinapterin, a modified form of tetrahydromethanopterin CC found in the Methanosarcinales. CC -!- It does not require K(+), and does not discriminate between ATP and CC GTP. DR Q8TKX5, MPTN_METAC ; Q58037, MPTN_METJA ; Q8Q0M5, MPTN_METMA ; DR Q6LZC7, MPTN_METMP ; //