RPSBLAST alignment for GI: 254780873 and conserved domain: cd04257
>gnl|CDD|58623 cd04257, AAK_AK-HSDH, AAK_AK-HSDH: Amino Acid Kinase Superfamily (AAK), AK-HSDH; this CD includes the N-terminal catalytic domain of aspartokinase (AK) of the bifunctional enzyme AK - homoserine dehydrogenase (HSDH). These aspartokinases are found in bacteria (E. coli AKI-HSDHI, ThrA and E. coli AKII-HSDHII, MetL) and higher plants (Z. 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. ThrA and MetL are involved in threonine and methionine biosynthesis, respectively. 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 pathway end products. Maize AK-HSDH is a Thr-sensitive 180-kD enzyme. Arabidopsis AK-HSDH is an alanine-activated, threonine-sensitive enzyme whose ACT domains, located C-terminal to the AK catalytic domain, were shown to be involved in allosteric activation.. Length = 294
Score = 143 bits (362), Expect = 8e-35
Identities = 80/297 (26%), Positives = 134/297 (45%), Gaps = 60/297 (20%)
Query: 5 VMKFGGTSVANIDCIRSAALHVKREVDRGQEVAMVVSAMSGETDRLAELCRQVTSIDNAR 64
V+KFGGTS+AN + IR A + + Q VA+VVSA TD L EL +S D+A
Sbjct: 3 VLKFGGTSLANAERIRRVADIILNAAKQEQ-VAVVVSAPGKVTDLLLELAELASSGDDAY 61
Query: 65 ER--DVVISTGEQVSSGLMVLALQSLGIQAIS---------LQG---------------- 97
E + S + + L+ + + A+ L+G
Sbjct: 62 EDILQELESKHLDLITELLSGDAAAELLSALGNDLEELKDLLEGIYLLGELPDSIRAKVL 121
Query: 98 -----WQIPIMTDSLHGMA-RICRVDEKKIVT----HLK------------------KKQ 129
+++ L+ +D ++++ +L +
Sbjct: 122 SFGERLSARLLSALLNQQGLDAAWIDARELIVTDGGYLNAVVDIELSKERIKAWFSSNGK 181
Query: 130 VVVITGFQGLSHDNSVTTLGRGGSDTSAVAIAAAIKADRCDIYTDVCGIYTTDPRIEPKA 189
V+V+TGF + TTLGR GSD SA +AA + AD+ +I+TDV G+Y+ DPR A
Sbjct: 182 VIVVTGFIASNPQGETTTLGRNGSDYSAAILAALLDADQVEIWTDVDGVYSADPRKVKDA 241
Query: 190 HLMKKISFEEMLEMSSLGAKVMQVRSVELAMLYKMCLFVRSSFEDHGQQEQLGTLIC 246
L+ +S++E +E+S GAKV+ ++++ + + ++++F E GTLI
Sbjct: 242 RLLPSLSYQEAMELSYFGAKVLHPKTIQPVAKKNIPILIKNTF----NPEAPGTLIS 294