HHsearch alignment for GI: 254780873 and conserved domain: cd04921
>cd04921 ACT_AKi-HSDH-ThrA-like_1 ACT domains of the bifunctional enzyme aspartokinase (AK) - homoserine dehydrogenase (HSDH). This CD includes the first of two ACT domains of the bifunctional enzyme aspartokinase (AK) - homoserine dehydrogenase (HSDH). The ACT domains are positioned between the N-terminal catalytic domain of AK and the C-terminal HSDH domain found in bacteria (Escherichia coli (EC) ThrA) and higher plants (Zea mays AK-HSDH). AK and HSDH are the first and third enzymes in the biosynthetic pathway of the aspartate family of amino acids. AK catalyzes the phosphorylation of Asp to P-aspartyl phosphate. HSDH catalyzes the NADPH-dependent conversion of Asp 3-semialdehyde to homoserine. HSDH is the first committed reaction in the branch of the pathway that leads to Thr and Met. In E. coli, ThrA is subject to allosteric regulation by the end product L-threonine and the native enzyme is reported to be tetrameric. As with bacteria, plant AK and HSDH are feedback inhibited by pat
Probab=98.83 E-value=4.7e-09 Score=80.84 Aligned_cols=73 Identities=37% Similarity=0.432 Sum_probs=60.1
Q ss_pred CCHHCCC--CCCCCCCCCCHHHHHHHHCCCCEECCCCCCCCCCCCCCCEEECCHHHHHHHHHHHHHHHH----HCCCCEE
Q ss_conf 2000127--750004841000145541285011123443222233310121230247766887898886----0596158
Q gi|254780873|r 266 EAQISLR--RLRDHPGISASIFSPLAEAHINIDMIIQNVSEDGQYVDITFTTPSSSLEKALAVLSDNKE----NIGYDVI 339 (411)
Q Consensus 266 i~~Iti~--~~~~~~g~~a~If~~La~~~I~VdmI~qs~s~~~~~~~Isf~i~~~d~~~~~~~L~~~~~----~~~~~~I 339 (411)
T Consensus 1 valv~vvG~gm~~~~GvaariF~~La~~~INI~mIsQ~sSE~----sIs~vV~~~d~~~Av~aL~~~F~le~~~~~i~~i 76 (80)
T cd04921 1 VALINIEGTGMVGVPGIAARIFSALARAGINVILISQASSEH----SISFVVDESDADKALEALEEEFALEIKAGLIKPI 76 (80)
T ss_pred CEEEEEECCCCCCCCCHHHHHHHHHHHCCCCEEEEECCCCCC----EEEEEECHHHHHHHHHHHHHHHHHHHHCCCCCCE
T ss_conf 979999788968997489999999998799789997378765----6999981899999999999999989972988844
Q ss_pred EEE
Q ss_conf 974
Q gi|254780873|r 340 QHE 342 (411)
Q Consensus 340 ~~~ 342 (411)
T Consensus 77 ~v~ 79 (80)
T cd04921 77 EVE 79 (80)
T ss_pred EEE
T ss_conf 764