HHsearch alignment for GI: peg_33 and conserved domain: cd04903

>cd04903 ACT_LSD C-terminal ACT domain of the L-serine dehydratase (LSD), iron-sulfur-dependent, beta subunit. The C-terminal ACT domain of the L-serine dehydratase (LSD), iron-sulfur-dependent, beta subunit, found in various bacterial anaerobes such as Clostridium, Bacillis, and Treponema species. These enzymes catalyze the deamination of L-serine, producing pyruvate and ammonia. Unlike the eukaryotic L-serine dehydratase, which requires the pyridoxal-5'-phosphate (PLP) cofactor, the prokaryotic L-serine dehydratase contains an [4Fe-4S] cluster instead of a PLP active site. The LSD alpha and beta subunits of the 'clostridial' enzyme are encoded by the sdhA and sdhB genes. The single subunit bacterial homologs of L-serine dehydratase (LSD1, LSD2, TdcG) present in Escherichia coli, and other enterobacterials, lack the ACT domain described here. Members of this CD belong to the superfamily of ACT regulatory domains.
Probab=99.91  E-value=3.7e-24  Score=148.27  Aligned_cols=71  Identities=24%  Similarity=0.356  Sum_probs=69.6

Q ss_pred             EEEEEECCCCCHHHHHHHHHHHCCCCEEEEEEECCCCCCEEEEEEEECCCCCHHHHHHHHCCCCEEEEEEE
Q ss_conf             99999828786688999899736996322774214789818999994788998999998649882999999
Q 537021.9.peg.3   25 MICIVNADILGIVVFVGNILGEYGINIAHFHLGRSQSTEHAISFLCIDGSILNSVLEKLSVNVTIRFVKQF   95 (100)
Q Consensus        25 ~L~i~~~D~PG~I~~v~~~L~~~~INIa~m~l~r~~~g~~A~~ii~vD~~i~~~vl~~i~~~~~v~~vr~i   95 (100)
T Consensus         1 TL~i~~~D~PG~Ig~i~~~L~~~~INIa~m~v~R~~~g~~A~~ii~~D~~v~~~~l~~i~~~~~I~~v~~I   71 (71)
T cd04903           1 TLIVVHKDKPGAIAKVTSVLADHEINIAFMRVSRKEKGDQALMVIEVDQPIDEEVIEEIKKIPNIHQVILI   71 (71)
T ss_pred             CEEEEECCCCCCHHHHHHHHHHCCCCCHHEEEECCCCCCEEEEEEECCCCCCHHHHHHHHCCCCCEEEEEC
T ss_conf             98999448699199999999865968036187515899789999992899999999999759995699979