>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=98.23  E-value=7e-07  Score=56.15  Aligned_cols=69  Identities=30%  Similarity=0.403  Sum_probs=46.0

Q ss_pred             CCCCCCCCCCCCCCCCCCCCCCCCEEHHHCCCCCCEEEECC-CCCCCCHHCCCCCCCCCCCCCEEEEEEEEE
Q ss_conf             57654333100156532334420000110011232033112-210000000233210023322023310024
Q gi|254780771|r  113 SSFEGGISPQAFLGEDVKIEDGVVIAPMAVVYPGVEIGRKT-YVGPGSVIGAGVRIGRNCSIGAGSSIYSSL  183 (347)
Q Consensus       113 ~~~~~~I~~~a~I~~~a~I~~~v~I~~~~~I~~~v~IG~~~-~I~~~~~I~~~~~IG~~~~I~~~~~I~~~i  183 (347)
T Consensus       251 ~~~~s~i~GRV~v~~gakid~ns~i~GPa~IG~d~~I-~nsGyiGPYtSig~~~~I-~d~~vE~S~vldes~  320 (361)
T TIGR01208       251 VDDESKIEGRVEVGEGAKIDVNSVIRGPAVIGEDCII-ENSGYIGPYTSIGEGVVI-RDAEVEHSIVLDESV  320 (361)
T ss_pred             EECCCEEEEEEEECCCCEECCCCEEECCEEECCCCEE-ECCCCCCCEEEECCCEEE-ECCCCCCEEEECCCE
T ss_conf             3226578840790897884237778706087795278-268611770772575387-416302035644211