ID 2.4.99.16 DE starch synthase (maltosyl-transferring). AN alpha1,4-glucan:maltose-1-P maltosyltransferase. AN GMPMT. CA [(1->4)-alpha-D-glucosyl](n) + alpha-maltose 1-phosphate = [(1->4)-alpha- CA D-glucosyl](n+2) + phosphate. CC -!- The enzyme from from the bacterium Mycobacterium smegmatis is CC specific for maltose. CC -!- It has no activity with alpha-D-glucose. CC -!- Formerly EC 2.4.1.n5. DR Q9L1K2, GLGE1_STRCO; Q9KY04, GLGE2_STRCO; D7BMJ2, GLGE_ARCHD ; DR C6A9K7, GLGE_BIFLB ; Q8G784, GLGE_BIFLO ; Q63T93, GLGE_BURPS ; DR Q3J3M8, GLGE_CERS4 ; Q9JN46, GLGE_CERSP ; Q8KAR6, GLGE_CHLTE ; DR Q8NR39, GLGE_CORGL ; D9Q7U8, GLGE_CORP1 ; B3DYJ8, GLGE_METI4 ; DR P63532, GLGE_MYCBO ; Q9RP48, GLGE_MYCS2 ; P9WQ16, GLGE_MYCTO ; DR P9WQ17, GLGE_MYCTU ; Q1D651, GLGE_MYXXD ; Q6L2Z8, GLGE_PICTO ; DR Q9I1W4, GLGE_PSEAE ; Q2RTZ1, GLGE_RHORT ; Q2S498, GLGE_SALRD ; DR Q8PE50, GLGE_XANCP ; //