ID   LIPB_MANSM              Reviewed;         221 AA.
AC   Q65RH6;
DT   15-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 2.
DT   03-AUG-2022, entry version 95.
DE   RecName: Full=Octanoyltransferase {ECO:0000255|HAMAP-Rule:MF_00013};
DE            EC=2.3.1.181 {ECO:0000255|HAMAP-Rule:MF_00013};
DE   AltName: Full=Lipoate-protein ligase B {ECO:0000255|HAMAP-Rule:MF_00013};
DE   AltName: Full=Lipoyl/octanoyl transferase {ECO:0000255|HAMAP-Rule:MF_00013};
DE   AltName: Full=Octanoyl-[acyl-carrier-protein]-protein N-octanoyltransferase {ECO:0000255|HAMAP-Rule:MF_00013};
GN   Name=lipB {ECO:0000255|HAMAP-Rule:MF_00013}; OrderedLocusNames=MS1827;
OS   Mannheimia succiniciproducens (strain MBEL55E).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC   Pasteurellaceae; Basfia.
OX   NCBI_TaxID=221988;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MBEL55E;
RX   PubMed=15378067; DOI=10.1038/nbt1010;
RA   Hong S.H., Kim J.S., Lee S.Y., In Y.H., Choi S.S., Rih J.-K., Kim C.H.,
RA   Jeong H., Hur C.G., Kim J.J.;
RT   "The genome sequence of the capnophilic rumen bacterium Mannheimia
RT   succiniciproducens.";
RL   Nat. Biotechnol. 22:1275-1281(2004).
CC   -!- FUNCTION: Catalyzes the transfer of endogenously produced octanoic acid
CC       from octanoyl-acyl-carrier-protein onto the lipoyl domains of lipoate-
CC       dependent enzymes. Lipoyl-ACP can also act as a substrate although
CC       octanoyl-ACP is likely to be the physiological substrate.
CC       {ECO:0000255|HAMAP-Rule:MF_00013}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-lysyl-[protein] + octanoyl-[ACP] = H(+) + holo-[ACP] + N(6)-
CC         octanoyl-L-lysyl-[protein]; Xref=Rhea:RHEA:17665, Rhea:RHEA-
CC         COMP:9636, Rhea:RHEA-COMP:9685, Rhea:RHEA-COMP:9752, Rhea:RHEA-
CC         COMP:9928, ChEBI:CHEBI:15378, ChEBI:CHEBI:29969, ChEBI:CHEBI:64479,
CC         ChEBI:CHEBI:78463, ChEBI:CHEBI:78809; EC=2.3.1.181;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00013};
CC   -!- PATHWAY: Protein modification; protein lipoylation via endogenous
CC       pathway; protein N(6)-(lipoyl)lysine from octanoyl-[acyl-carrier-
CC       protein]: step 1/2. {ECO:0000255|HAMAP-Rule:MF_00013}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00013}.
CC   -!- MISCELLANEOUS: In the reaction, the free carboxyl group of octanoic
CC       acid is attached via an amide linkage to the epsilon-amino group of a
CC       specific lysine residue of lipoyl domains of lipoate-dependent enzymes.
CC       {ECO:0000255|HAMAP-Rule:MF_00013}.
CC   -!- SIMILARITY: Belongs to the LipB family. {ECO:0000255|HAMAP-
CC       Rule:MF_00013}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAU38434.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AE016827; AAU38434.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_011200990.1; NC_006300.1.
DR   AlphaFoldDB; Q65RH6; -.
DR   SMR; Q65RH6; -.
DR   STRING; 221988.MS1827; -.
DR   EnsemblBacteria; AAU38434; AAU38434; MS1827.
DR   KEGG; msu:MS1827; -.
DR   eggNOG; COG0321; Bacteria.
DR   HOGENOM; CLU_035168_3_1_6; -.
DR   OrthoDB; 1806796at2; -.
DR   UniPathway; UPA00538; UER00592.
DR   Proteomes; UP000000607; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0033819; F:lipoyl(octanoyl) transferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0009249; P:protein lipoylation; IEA:InterPro.
DR   CDD; cd16444; LipB; 1.
DR   Gene3D; 3.30.930.10; -; 1.
DR   HAMAP; MF_00013; LipB; 1.
DR   InterPro; IPR045864; aa-tRNA-synth_II/BPL/LPL.
DR   InterPro; IPR004143; BPL_LPL_catalytic.
DR   InterPro; IPR000544; Octanoyltransferase.
DR   InterPro; IPR020605; Octanoyltransferase_CS.
DR   Pfam; PF03099; BPL_LplA_LipB; 1.
DR   PIRSF; PIRSF016262; LPLase; 1.
DR   SUPFAM; SSF55681; SSF55681; 1.
DR   TIGRFAMs; TIGR00214; lipB; 1.
DR   PROSITE; PS51733; BPL_LPL_CATALYTIC; 1.
DR   PROSITE; PS01313; LIPB; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Cytoplasm; Transferase.
FT   CHAIN           1..221
FT                   /note="Octanoyltransferase"
FT                   /id="PRO_0000062846"
FT   DOMAIN          31..213
FT                   /note="BPL/LPL catalytic"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01067"
FT   ACT_SITE        173
FT                   /note="Acyl-thioester intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         70..77
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         142..144
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         155..157
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   SITE            139
FT                   /note="Lowers pKa of active site Cys"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
SQ   SEQUENCE   221 AA;  24848 MW;  C1C4783540C67160 CRC64;
     MEQKLIIRQL GIRDYQKTWH EMQEFTDNRT DKSADEIWLV QHPSVFTQGQ AGKAEHLLRS
     TAIPVVQSDR GGQITYHGIG QQIMYVLIDI KRLKTQGRDI SVRQLVSALE QSVINTLADY
     GIESYAKADA PGVYIDGKKI CSLGLRIRRG CSFHGLALNI NMDLEPFHSI NPCGYAGLEM
     AQLADFVSPQ EADCGKVSPK LVEHFVTILG YNKQQIFNIK E