ID   DAPF_HALOH              Reviewed;         284 AA.
AC   B8CX90;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=Diaminopimelate epimerase {ECO:0000255|HAMAP-Rule:MF_00197};
DE            Short=DAP epimerase {ECO:0000255|HAMAP-Rule:MF_00197};
DE            EC=5.1.1.7 {ECO:0000255|HAMAP-Rule:MF_00197};
DE   AltName: Full=PLP-independent amino acid racemase {ECO:0000255|HAMAP-Rule:MF_00197};
GN   Name=dapF {ECO:0000255|HAMAP-Rule:MF_00197}; OrderedLocusNames=Hore_11570;
OS   Halothermothrix orenii (strain H 168 / OCM 544 / DSM 9562).
OC   Bacteria; Firmicutes; Clostridia; Halanaerobiales; Halanaerobiaceae;
OC   Halothermothrix.
OX   NCBI_TaxID=373903;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=H 168 / OCM 544 / DSM 9562;
RX   PubMed=19145256; DOI=10.1371/journal.pone.0004192;
RA   Mavromatis K., Ivanova N., Anderson I., Lykidis A., Hooper S.D., Sun H.,
RA   Kunin V., Lapidus A., Hugenholtz P., Patel B., Kyrpides N.C.;
RT   "Genome analysis of the anaerobic thermohalophilic bacterium
RT   Halothermothrix orenii.";
RL   PLoS ONE 4:E4192-E4192(2009).
CC   -!- FUNCTION: Catalyzes the stereoinversion of LL-2,6-diaminoheptanedioate
CC       (L,L-DAP) to meso-diaminoheptanedioate (meso-DAP), a precursor of L-
CC       lysine and an essential component of the bacterial peptidoglycan.
CC       {ECO:0000255|HAMAP-Rule:MF_00197}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(2S,6S)-2,6-diaminoheptanedioate = meso-2,6-
CC         diaminoheptanedioate; Xref=Rhea:RHEA:15393, ChEBI:CHEBI:57609,
CC         ChEBI:CHEBI:57791; EC=5.1.1.7; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00197};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via DAP
CC       pathway; DL-2,6-diaminopimelate from LL-2,6-diaminopimelate: step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00197}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00197}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00197}.
CC   -!- SIMILARITY: Belongs to the diaminopimelate epimerase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00197}.
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DR   EMBL; CP001098; ACL69909.1; -; Genomic_DNA.
DR   RefSeq; WP_012636094.1; NC_011899.1.
DR   AlphaFoldDB; B8CX90; -.
DR   SMR; B8CX90; -.
DR   STRING; 373903.Hore_11570; -.
DR   EnsemblBacteria; ACL69909; ACL69909; Hore_11570.
DR   KEGG; hor:Hore_11570; -.
DR   eggNOG; COG0253; Bacteria.
DR   HOGENOM; CLU_053306_3_0_9; -.
DR   OMA; HVAMRVH; -.
DR   OrthoDB; 1921631at2; -.
DR   UniPathway; UPA00034; UER00025.
DR   Proteomes; UP000000719; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0008837; F:diaminopimelate epimerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009089; P:lysine biosynthetic process via diaminopimelate; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00197; DAP_epimerase; 1.
DR   InterPro; IPR018510; DAP_epimerase_AS.
DR   InterPro; IPR001653; DAP_epimerase_DapF.
DR   PANTHER; PTHR31689; PTHR31689; 1.
DR   Pfam; PF01678; DAP_epimerase; 2.
DR   TIGRFAMs; TIGR00652; DapF; 1.
DR   PROSITE; PS01326; DAP_EPIMERASE; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Isomerase; Lysine biosynthesis;
KW   Reference proteome.
FT   CHAIN           1..284
FT                   /note="Diaminopimelate epimerase"
FT                   /id="PRO_1000124417"
FT   ACT_SITE        75
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   ACT_SITE        226
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         13
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         66
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         76..77
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         166
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         199
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         217..218
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   BINDING         227..228
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   SITE            168
FT                   /note="Could be important to modulate the pK values of the
FT                   two catalytic cysteine residues"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
FT   SITE            217
FT                   /note="Could be important to modulate the pK values of the
FT                   two catalytic cysteine residues"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00197"
SQ   SEQUENCE   284 AA;  31682 MW;  A152F15600CAC7FB CRC64;
     MELSFTKMHG TGNDFIMVNG SNYPDLDFSK LARQLCRRHF SIGADGLIIV LPPESVEHDF
     RMRIFNADGS EAEMCGNGIR CFAHYLRENN LTTRDVLKIE TLAGIITPEI VSYNGDKSLI
     KVNMGRPHFK SEEIPVNIED ELDYVKNFPL KIGNKKLNIN CVSMGNPHTI IFVEDVNQIP
     VSTWGQEIEH NPLFPQKTNV EFIQIQSEDE IIMRVWERGS GITLACGTGA CASVVAGIKN
     GLLKNMVTVH LPGGDLNIEW QEQDVFMTGP AESVYTGKIV IQEG