ID H2CHR7_9LEPT Unreviewed; 294 AA.
AC H2CHR7;
DT 21-MAR-2012, integrated into UniProtKB/TrEMBL.
DT 21-MAR-2012, sequence version 1.
DT 24-JAN-2024, entry version 57.
DE RecName: Full=4-hydroxy-tetrahydrodipicolinate synthase {ECO:0000256|ARBA:ARBA00012086, ECO:0000256|HAMAP-Rule:MF_00418};
DE Short=HTPA synthase {ECO:0000256|HAMAP-Rule:MF_00418};
DE EC=4.3.3.7 {ECO:0000256|ARBA:ARBA00012086, ECO:0000256|HAMAP-Rule:MF_00418};
GN Name=dapA {ECO:0000256|HAMAP-Rule:MF_00418};
GN ORFNames=Lepil_1218 {ECO:0000313|EMBL:EHQ05912.1};
OS Leptonema illini DSM 21528.
OC Bacteria; Spirochaetota; Spirochaetia; Leptospirales; Leptospiraceae;
OC Leptonema.
OX NCBI_TaxID=929563 {ECO:0000313|EMBL:EHQ05912.1, ECO:0000313|Proteomes:UP000005737};
RN [1] {ECO:0000313|EMBL:EHQ05912.1, ECO:0000313|Proteomes:UP000005737}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 21528 {ECO:0000313|EMBL:EHQ05912.1,
RC ECO:0000313|Proteomes:UP000005737};
RG US DOE Joint Genome Institute (JGI-PGF);
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Peters L., Mikhailova N., Held B.,
RA Kyrpides N., Mavromatis K., Ivanova N., Markowitz V., Cheng J.-F.,
RA Hugenholtz P., Woyke T., Wu D., Gronow S., Wellnitz S., Brambilla E.-M.,
RA Klenk H.-P., Eisen J.A.;
RT "The Improved High-Quality Draft genome of Leptonema illini DSM 21528.";
RL Submitted (OCT-2011) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the condensation of (S)-aspartate-beta-semialdehyde
CC [(S)-ASA] and pyruvate to 4-hydroxy-tetrahydrodipicolinate (HTPA).
CC {ECO:0000256|ARBA:ARBA00003294, ECO:0000256|HAMAP-Rule:MF_00418}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-aspartate 4-semialdehyde + pyruvate = (2S,4S)-4-
CC hydroxy-2,3,4,5-tetrahydrodipicolinate + H(+) + H2O;
CC Xref=Rhea:RHEA:34171, ChEBI:CHEBI:15361, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:67139, ChEBI:CHEBI:537519; EC=4.3.3.7;
CC Evidence={ECO:0000256|ARBA:ARBA00000594, ECO:0000256|HAMAP-
CC Rule:MF_00418};
CC -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via DAP
CC pathway; (S)-tetrahydrodipicolinate from L-aspartate: step 3/4.
CC {ECO:0000256|ARBA:ARBA00005120, ECO:0000256|HAMAP-Rule:MF_00418}.
CC -!- SUBUNIT: Homotetramer; dimer of dimers. {ECO:0000256|HAMAP-
CC Rule:MF_00418}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00418}.
CC -!- SIMILARITY: Belongs to the DapA family. {ECO:0000256|HAMAP-
CC Rule:MF_00418, ECO:0000256|PIRNR:PIRNR001365}.
CC -!- CAUTION: Was originally thought to be a dihydrodipicolinate synthase
CC (DHDPS), catalyzing the condensation of (S)-aspartate-beta-semialdehyde
CC [(S)-ASA] and pyruvate to dihydrodipicolinate (DHDP). However, it was
CC shown in E.coli that the product of the enzymatic reaction is not
CC dihydrodipicolinate but in fact (4S)-4-hydroxy-2,3,4,5-tetrahydro-(2S)-
CC dipicolinic acid (HTPA), and that the consecutive dehydration reaction
CC leading to DHDP is not spontaneous but catalyzed by DapB.
CC {ECO:0000256|HAMAP-Rule:MF_00418}.
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DR EMBL; JH597773; EHQ05912.1; -; Genomic_DNA.
DR RefSeq; WP_002770967.1; NZ_JH597773.1.
DR AlphaFoldDB; H2CHR7; -.
DR STRING; 183.GCA_002009735_01584; -.
DR HOGENOM; CLU_049343_7_0_12; -.
DR UniPathway; UPA00034; UER00017.
DR Proteomes; UP000005737; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0008840; F:4-hydroxy-tetrahydrodipicolinate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019877; P:diaminopimelate biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0009089; P:lysine biosynthetic process via diaminopimelate; IEA:UniProtKB-UniPathway.
DR CDD; cd00950; DHDPS; 1.
DR Gene3D; 3.20.20.70; Aldolase class I; 1.
DR HAMAP; MF_00418; DapA; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR005263; DapA.
DR InterPro; IPR002220; DapA-like.
DR InterPro; IPR020624; Schiff_base-form_aldolases_CS.
DR NCBIfam; TIGR00674; dapA; 1.
DR PANTHER; PTHR12128:SF66; 4-HYDROXY-TETRAHYDRODIPICOLINATE SYNTHASE; 1.
DR PANTHER; PTHR12128; DIHYDRODIPICOLINATE SYNTHASE; 1.
DR Pfam; PF00701; DHDPS; 1.
DR PIRSF; PIRSF001365; DHDPS; 1.
DR PRINTS; PR00146; DHPICSNTHASE.
DR SMART; SM01130; DHDPS; 1.
DR SUPFAM; SSF51569; Aldolase; 1.
DR PROSITE; PS00665; DHDPS_1; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00418};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_00418};
KW Diaminopimelate biosynthesis {ECO:0000256|ARBA:ARBA00022915,
KW ECO:0000256|HAMAP-Rule:MF_00418};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00418};
KW Lysine biosynthesis {ECO:0000256|ARBA:ARBA00023154, ECO:0000256|HAMAP-
KW Rule:MF_00418}; Reference proteome {ECO:0000313|Proteomes:UP000005737};
KW Schiff base {ECO:0000256|ARBA:ARBA00023270, ECO:0000256|HAMAP-
KW Rule:MF_00418}.
FT ACT_SITE 135
FT /note="Proton donor/acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418,
FT ECO:0000256|PIRSR:PIRSR001365-1"
FT ACT_SITE 163
FT /note="Schiff-base intermediate with substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418,
FT ECO:0000256|PIRSR:PIRSR001365-1"
FT BINDING 47
FT /ligand="pyruvate"
FT /ligand_id="ChEBI:CHEBI:15361"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418,
FT ECO:0000256|PIRSR:PIRSR001365-2"
FT BINDING 205
FT /ligand="pyruvate"
FT /ligand_id="ChEBI:CHEBI:15361"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418,
FT ECO:0000256|PIRSR:PIRSR001365-2"
FT SITE 46
FT /note="Part of a proton relay during catalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418"
FT SITE 109
FT /note="Part of a proton relay during catalysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00418"
SQ SEQUENCE 294 AA; 31402 MW; 6CA42D54153E3E9C CRC64;
MKLEGLYTAL ITPFTADGSK IDYEAFAKLI ERQIAGGVSG VVPCGTTGES PTLSHEEHAE
LIAQTVKLVN GRVQVIAGTG SNSTTEAIEL TEQACKAGVD AVMLVNPYYN KPSQEGLYRH
FKAVAERSSK PVVLYNIRGR TAVNVEPETF VRLAEIPNIV SVKEASGDLN QMARIIGLTK
GRLALLSGDD NLTPAVIGVG GKGVISVASN LYPKKLSRMV GKYLSGDFTG GNVIFYEMLE
FMNALFWETN PVPVKTGAAM LGHCTPAMRL PLVEMPADKA AKFKALLDQI GADA
//