>TIGR01208 rmlA_long glucose-1-phosphate thymidylyltransferase; InterPro: IPR005908 Synonym: dTDP-D-glucose synthase This group of proteins comprises a tightly conserved but broadly distributed subfamily of known and putative bacterial glucose-1-phosphate thymidylyltransferases (2.7.7.24 from EC). It is well characterised in several species as the first of four enzymes involved in the biosynthesis of dTDP-L-rhamnose, a cell wall constituent and a feedback inhibitor of the enzyme. dTTP + alpha-D-glucose 1-phosphate = diphosphate + dTDP-glucose The family of known and putative glucose-1-phosphate thymidyltransferases shows a deep split into a short form (see IPR005907 from INTERPRO) and a long form described by this model. The homotetrameric short form is found in numerous bacterial species that incorporate dTDP-L-rhamnose, which it helps synthesize, into the cell wall. It is subject to feedback inhibition. The long form, in contrast, is found in many species for which it serves as a sugar-activating enzyme for antibiotic biosynthesis and or other, unknown pathways, and in which dTDP-L-rhamnose is not necessarily produced. .

Probab=95.82  E-value=0.015  Score=36.16  Aligned_cols=29  Identities=24%  Similarity=0.413  Sum_probs=15.5

Q ss_pred             HHHHHHHHCCCCCCH--HHHHHHHHHHHHHHCCC
Q ss_conf             997505316824417--89999999999730793
Q gi|254780781|r   14 SFFEESNSKNESIPQ--DVKDAVQSTLDLLDRGI   45 (285)
Q Consensus        14 ~awe~r~~l~~~~~~--~~~~aI~~~I~~LD~G~   45 (285)
T Consensus       181 ~if~~~~~~kPSwRGElEITD~IQ~l---Ie~Gy  211 (361)
T TIGR01208       181 LIFEAIKNIKPSWRGELEITDAIQYL---IEKGY  211 (361)
T ss_pred             HHHHHHHCCCCCCCCCHHHHHHHHHH---HHCCC
T ss_conf             98889852888776621577577565---31583