>cd04869 ACT_GcvR_2 ACT domains that comprise the Glycine Cleavage System Transcriptional Repressor (GcvR) protein, and other related domains. This CD includes the second of the two ACT domains that comprise the Glycine Cleavage System Transcriptional Repressor (GcvR) protein, and other related domains. The glycine cleavage enzyme system in Escherichia coli provides one-carbon units for cellular methylation reactions. This enzyme system, encoded by the gcvTHP operon and lpd gene, catalyzes the cleavage of glycine into CO2 + NH3 and transfers a one-carbon unit to tetrahydrofolate, producing 5,10-methylenetetrahydrofolate. The gcvTHP operon is activated by the GcvA protein in response to glycine and repressed by a GcvA/GcvR interaction in the absence of glycine. It has been proposed that the co-activator glycine acts through a mechanism of de-repression by binding to GcvR and preventing GcvR from interacting with GcvA to block GcvA's activator function. Evidence also suggests that GcvR in

Probab=91.37  E-value=1.1  Score=24.46  Aligned_cols=62  Identities=21%  Similarity=0.294  Sum_probs=35.7

Q ss_pred             CCCCCCCCHHHHHHHHCCCCEECCCCCCCCC------CCCCCCEEECCH-HHHHHHHHHHHHHHHHCCC
Q ss_conf             0004841000145541285011123443222------233310121230-2477668878988860596
Q gi|254780873|r  275 RDHPGISASIFSPLAEAHINIDMIIQNVSED------GQYVDITFTTPS-SSLEKALAVLSDNKENIGY  336 (411)
Q Consensus       275 ~~~~g~~a~If~~La~~~I~VdmI~qs~s~~------~~~~~Isf~i~~-~d~~~~~~~L~~~~~~~~~  336 (411)
T Consensus         7 ~DrpGIv~~it~~La~~~inI~~l~t~~~~a~~sg~~lF~a~~~v~lP~~~~~~~L~~~l~~l~~~l~v   75 (81)
T cd04869           7 NDRPGIVHEVTQFLAQRNINIEDLSTETYSAPMSGTPLFKAQATLALPAGTDLDALREELEELCDDLNV   75 (81)
T ss_pred             CCCCCHHHHHHHHHHHCCCCCEEEEEEEECCCCCCCCCEEEEEEEECCCCCCHHHHHHHHHHHHHHHCE
T ss_conf             899887999999999869981466877763999981036899999379999999999999999887331