ID 2.1.2.2 DE phosphoribosylglycinamide formyltransferase 1. AN 2-amino-N-ribosylacetamide 5'-phosphate transformylase. AN 5,10-methenyltetrahydrofolate:2-amino-N-ribosylacetamide ribonucleotide AN transformylase. AN 5'-phosphoribosylglycinamide transformylase. AN GAR formyltransferase. AN GART. AN GAR TFase. AN GAR transformylase. AN glycinamide ribonucleotide transformylase. CA (6R)-10-formyltetrahydrofolate + N(1)-(5-phospho-beta-D- CA ribosyl)glycinamide = (6S)-5,6,7,8-tetrahydrofolate + H(+) + N(2)-formyl- CA N(1)-(5-phospho-beta-D-ribosyl)glycinamide. CC -!- Two enzymes are known to catalyze the third step in de novo purine CC biosynthesis. CC -!- This enzyme utilizes 10-formyltetrahydrofolate as the formyl donor, CC while the other enzyme, EC 6.3.1.21, utilizes formate. CC -!- In vertebrates this activity is catalyzed by a trifunctional enzyme CC that also catalyzes the activities of EC 6.3.4.13 and EC 6.3.3.1. DR Q59A32, PUR2_BOVIN ; P21872, PUR2_CHICK ; Q26255, PUR2_CHITE ; DR P00967, PUR2_DROME ; P16340, PUR2_DROPS ; P22102, PUR2_HUMAN ; DR Q64737, PUR2_MOUSE ; P52422, PUR3_ARATH ; P12040, PUR3_BACSU ; DR Q54I60, PUR3_DICDI ; P08179, PUR3_ECOLI ; P43846, PUR3_HAEIN ; DR P9WHM4, PUR3_MYCTO ; P9WHM5, PUR3_MYCTU ; Q9UUK7, PUR3_SCHPO ; DR Q42805, PUR3_SOYBN ; Q5HH12, PUR3_STAAC ; P65897, PUR3_STAAM ; DR P99162, PUR3_STAAN ; Q6GI12, PUR3_STAAR ; Q6GAE1, PUR3_STAAS ; DR Q8NX89, PUR3_STAAW ; Q5HQ98, PUR3_STAEQ ; Q8CT28, PUR3_STAES ; DR P52423, PUR3_VIGUN ; P04161, PUR3_YEAST ; //