>cd04902 ACT_3PGDH-xct C-terminal ACT (regulatory) domain of D-3-phosphoglycerate dehydrogenase (3PGDH). The C-terminal ACT (regulatory) domain of D-3-phosphoglycerate dehydrogenase (3PGDH), with an extended C-terminal (xct) region from bacteria, archaea, fungi, and plants. 3PGDH is an enzyme that belongs to the D-isomer specific, 2-hydroxyacid dehydrogenase family and catalyzes the oxidation of D-3-phosphoglycerate to 3- phosphohydroxypyruvate, which is the first step in the biosynthesis of L-serine, using NAD+ as the oxidizing agent. In bacteria, 3PGDH is feedback-controlled by the end product L-serine in an allosteric manner. Some 3PGDH enzymes have an additional domain formed by an extended C-terminal region. This additional domain introduces significant asymmetry to the homotetramer. Adjacent ACT (regulatory) domains interact, creating two serine-binding sites, however, this asymmetric arrangement results in the formation of two different and distinct domain interfaces between iden

Probab=97.34  E-value=0.00043  Score=48.72  Aligned_cols=66  Identities=9%  Similarity=0.191  Sum_probs=42.9

Q ss_pred             EEEEECCCCCHHHHHHHHHHHCCCCEEEEEECCCCCCCCEEEEEEEEEECCHHHHHHHHHHHHCCCCCCC
Q ss_conf             9999248887489999998866995788882267787761359999210488999999998623830004
Q gi|254780900|r  356 IRLTIRNFEGILDKITSQMSDFNISLRLFSCPHQEENSQEFSVFMITHKVSGKLIRDAIECFNGKSDAIR  425 (438)
Q Consensus       356 LRl~v~DkpGVLa~It~ilak~~ISIesi~Q~~~~~~~~~~~IViiTh~~~e~~i~~ai~~i~~l~~v~~  425 (438)
T Consensus         2 Lii~~~D~PGvIg~v~~~Lg~~~INIa~m~l-~R~~~g~~A~~vi~vD~~v~~---~~l~~i~~~~~V~~   67 (73)
T cd04902           2 LVVRNTDRPGVIGKVGTILGEAGINIAGMQV-GRDEPGGEALMVLSVDEPVPD---EVLEELRALPGILS   67 (73)
T ss_pred             EEEEECCCCCCHHHHHHHHHHCCCCHHHHHH-CCCCCCCEEEEEEEECCCCCH---HHHHHHHCCCCCCE
T ss_conf             8998169899289999999870977888432-576899878999990899999---99999975989528