>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=93.96  E-value=0.13  Score=30.48  Aligned_cols=27  Identities=37%  Similarity=0.500  Sum_probs=12.2

Q ss_pred             CCCCCCCCCCCCCEECCEEEECCCCEE
Q ss_conf             533677201566123220473068688
Q gi|254780781|r  138 AYIGEGSMIDTWSTVGSCAQIGKNVHI  164 (285)
Q Consensus       138 A~Ig~gt~I~~~a~IG~~a~IG~~vhI  164 (285)
T Consensus       261 V~v~~gakid~ns~i~GPa~IG~d~~I  287 (361)
T TIGR01208       261 VEVGEGAKIDVNSVIRGPAVIGEDCII  287 (361)
T ss_pred             EEECCCCEECCCCEEECCEEECCCCEE
T ss_conf             790897884237778706087795278