>cd04933 ACT_AK1-AT_1 ACT domains located C-terminal to the catalytic domain of a monofunctional, lysine-sensitive, plant aspartate kinase 1 (AK1). This CD includes the first of two ACT domains located C-terminal to the catalytic domain of a monofunctional, lysine-sensitive, plant aspartate kinase 1 (AK1), which can be synergistically inhibited by S-adenosylmethionine. This isoenzyme is found in higher plants, Arabidopsis thaliana (AT) and Zea mays, and also in Chlorophyta. Like the Escherichia coli AKIII (LysC), Arabidopsis AK1 binds two feedback allosteric inhibitor lysine molecules at the dimer interface located between the ACT1 domain of two subunits. A loop in common is involved in the binding of both Lys and S-adenosylmethionine providing an explanation for the synergistic inhibition by these effectors. Members of this CD belong to the superfamily of ACT regulatory domains.

Probab=97.41  E-value=0.00061  Score=46.43  Aligned_cols=48  Identities=23%  Similarity=0.380  Sum_probs=45.2

Q ss_pred             EEEEEECCCCCCCCCHHHHHHHHHHHCCCEEEEEEECCCEEEEEECHH
Q ss_conf             699996678667855799999999867982999970784899997088
Q gi|254780873|r  346 VKISAIGIGMQSYAGVASAFFLCLAEKGINIKAITTSEIKISVLIDSA  393 (411)
Q Consensus       346 a~ISvVG~gm~~~~Giaakif~aL~~~~InI~~issSe~~IS~VV~~~  393 (411)
T Consensus         2 t~i~i~S~rMl~a~GFLa~VF~if~~~~isVD~ItTSEVsVSlTlD~s   49 (78)
T cd04933           2 TMLDITSTRMLGQYGFLAKVFSIFETLGISVDVVATSEVSISLTLDPS   49 (78)
T ss_pred             EEEEEECHHHHHHCCHHHHHHHHHHHCCCCEEEEEEEEEEEEEEECCC
T ss_conf             899983411677744599999999983995699982257999997584