>TIGR00674 dapA dihydrodipicolinate synthase; InterPro: IPR005263 Dihydropicolinate synthase (DHDPS) is the key enzyme in lysine biosynthesis via the diaminopimelate pathway of prokaryotes, some phycomycetes and higher plants. The enzyme catalyses the condensation of L-aspartate-beta-semialdehyde and pyruvate to dihydropicolinic acid via a ping-pong mechanism in which pyruvate binds to the enzyme by forming a Schiff-base with a lysine residue . Three other proteins are structurally related to DHDPS and probably also act via a similar catalytic mechanism. These are Escherichia coli N-acetylneuraminate lyase (4.1.3.3 from EC, IPR005264 from INTERPRO) (gene nanA), which catalyzes the condensation of N-acetyl-D-mannosamine and pyruvate to form N-acetylneuraminate; Sinorhizobium meliloti protein mosA , which is involved in the biosynthesis of the rhizopine 3-O-methyl-scyllo-inosamine; and E. coli hypothetical protein yjhH. The sequences of DHDPS from different sources are well-conserved. The structure takes the form of a homotetramer, in which 2 monomers are related by an approximate 2-fold symmetry . Each monomer comprises 2 domains: an 8-fold alpha-/beta-barrel, and a C-terminal alpha-helical domain. The fold resembles that of N-acetylneuraminate lyase. The active site lysine is located in the barrel domain, and has access via 2 channels on the C-terminal side of the barrel. This family represents a subclass of dihydrodipicolinate synthase. ; GO: 0008840 dihydrodipicolinate synthase activity, 0019877 diaminopimelate biosynthetic process.

Probab=100.00 E-value=0 Score=555.82 Aligned_cols=287 Identities=44% Similarity=0.677 Sum_probs=279.9 Q ss_pred EEECCCCCCCCCCCCCCHHHHHHHHHHHHHCCCCEEEECCCCCCHHCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCHHH Q ss_conf 01112017738988868999999999999769989998672325010899999998654311012344300367410278 Q gi|254780276|r 4 GSIPALITPFTKGNLIDEDAFVEHIEWQITEGSGGLVPAGTTGESSTLSHEEHCRIIELCVKTVASRVPVMAGIGSNNTR 83 (292) Q Consensus 4 Gi~~~~~TPf~~d~~iD~~~~~~~i~~l~~~gv~gi~~~G~tGE~~~Ls~~Er~~~~~~~~~~~~~r~pii~gv~~~~~~ 83 (292) T Consensus 1 gv~~A~iTPFk~~~~VDf~~Le~li~~~~~~G~da~V~~GTTGEs~TLs~EE~~~~i~~~~~~~~~R~pvIaG~GsN~T~ 80 (288) T TIGR00674 1 GVITALITPFKEDGSVDFAALEKLIDFQIENGTDAIVVVGTTGESATLSHEEHKKVIEFVVDLVKGRVPVIAGTGSNATE 80 (288) T ss_pred CCCCEEECCCCCCCCCCHHHHHHHHHHHHHHCCCEEEECCCCCCCCCCCHHHHHHHHHHHHHHHCCCEEEEECCCCCHHH T ss_conf 99840533304988553889999999899707985897135588644688888999999987762877898537732589 Q ss_pred HHHHHHHHHHHCCCCCCCEECCCCCCCCHHHHHHHHHHHHHHHCCCCEEEECHHHCCCCCCHHHHHHHHHHCCHHHHHHC Q ss_conf 99997534321024432001234334317889999999875302330121001111121110689997432030233100 Q gi|254780276|r 84 ESVELAQYAHSIGADALLVVIPYYNKPNRRGLLAHFGEIATTVSSPIYIYNNPSRTVIEMDVDTMAELAATYPNIVGVKD 163 (292) Q Consensus 84 ~~i~~a~~a~~~Gad~i~v~~P~~~~~~~~~i~~~~~~i~~~~~~pi~iYn~P~~~g~~~~~~~l~~L~~~~pni~giK~ 163 (292) T Consensus 81 Eai~l~~~a~~~G~dg~L~vtPyYNKP~q~Gl~~HFkaia~~~~lPiiLYNvPsRTg~~l~peTv~rLA~~~~NI~aiKE 160 (288) T TIGR00674 81 EAIELTKFAEKLGVDGFLVVTPYYNKPTQEGLYQHFKAIAEEVDLPIILYNVPSRTGVSLEPETVKRLAEEPNNIVAIKE 160 (288) T ss_pred HHHHHHHHHHHCCCCEEECCCCCCCCCCCCHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCHHHHHHHHCCCCCEEEEEE T ss_conf 99999999986895688458875518882138999999998716988984287641017862899997301677068872 Q ss_pred CCCCHHHHHHHHHHCC-CCEEECCCCCCCHHHHHHHCCCCCCCCCCCCCCCHHHHHHHHHCCCCCHHHHHHHHHHHHHHH Q ss_conf 1221135899997359-840320132210012432033445522223211002444443117882799999999999999 Q gi|254780276|r 164 ATGKIELVSEQRLSCG-FDFIQLSGEDSSALGFNAHGGVGCISVTANVVPRICAEFQQAMIRGDYRQALLYQDKLMPLHQ 242 (292) Q Consensus 164 ~~~~~~~~~~~~~~~~-~~~~v~~G~~~~~~~~~~~G~~G~is~~~n~~P~~~~~l~~~~~~gd~~~A~~l~~~l~~l~~ 242 (292) T Consensus 161 a~g~l~~~~~i~~~~p~~dF~vlsGDD~l~l~~~~~Gg~GVISV~~N~~P~~~~emv~~a~~G~~~~A~EIh~kL~~L~~ 240 (288) T TIGR00674 161 ATGNLERISEIKAITPDDDFVVLSGDDALTLPILALGGKGVISVTSNVAPKLMKEMVENALEGDFAEAREIHQKLMPLFK 240 (288) T ss_pred CCCCHHHHHHHHHHCCCCCEEEEECCCCHHHHHHHHCCCEEEEHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHH T ss_conf 68888999999986689853888478611369998189616730055568999999999853897899999987888988 Q ss_pred HHHCCCCHHHHHHHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHC Q ss_conf 9842689389999999869889987678888987989999999999855 Q gi|254780276|r 243 ALFMEPAVCCVKYALSRLGRNVSLAVRSPMVSTLEKDTMIAIDQALERL 291 (292) Q Consensus 243 ~~~~~~~~~~~K~~l~~~G~~~~~~~R~Pl~~~~~~e~~~~i~~~l~~l 291 (292) T Consensus 241 ~LF~etNPIPVK~Al~~~Gl~~~~~~RLPL~~~s-~~~~~~l~~vL~~l 288 (288) T TIGR00674 241 ALFIETNPIPVKTALALLGLIEGDELRLPLTELS-EEHRKKLRDVLKSL 288 (288) T ss_pred HHCCCCCCHHHHHHHHHCCCCCCCCCCCCCCCCC-CHHHHHHHHHHHHC T ss_conf 7528889878999999738745787888988688-31567899998509

HHsearch alignment for GI: 254780276 and conserved domain: TIGR00674