ID   LIPB_MYCSK              Reviewed;         238 AA.
AC   A1UIB3;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 90.
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=Mkms_3377;
OS   Mycobacterium sp. (strain KMS).
OC   Bacteria; Actinobacteria; Corynebacteriales; Mycobacteriaceae;
OC   Mycobacterium; unclassified Mycobacterium.
OX   NCBI_TaxID=189918;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=KMS;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Kiss H., Brettin T., Bruce D., Han C., Tapia R., Gilna P., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Miller C.D.,
RA   Richardson P.;
RT   "Complete sequence of chromosome of Mycobacterium sp. KMS.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
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}.
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DR   EMBL; CP000518; ABL92571.1; -; Genomic_DNA.
DR   AlphaFoldDB; A1UIB3; -.
DR   SMR; A1UIB3; -.
DR   STRING; 189918.Mkms_3377; -.
DR   EnsemblBacteria; ABL92571; ABL92571; Mkms_3377.
DR   KEGG; mkm:Mkms_3377; -.
DR   HOGENOM; CLU_035168_2_1_11; -.
DR   OMA; GEVTYHC; -.
DR   UniPathway; UPA00538; UER00592.
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   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..238
FT                   /note="Octanoyltransferase"
FT                   /id="PRO_0000321649"
FT   DOMAIN          40..220
FT                   /note="BPL/LPL catalytic"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01067"
FT   ACT_SITE        181
FT                   /note="Acyl-thioester intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         78..85
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         150..152
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         163..165
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   SITE            147
FT                   /note="Lowers pKa of active site Cys"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
SQ   SEQUENCE   238 AA;  24955 MW;  EA3A8D148F8A5DD9 CRC64;
     MSMAISIRSS TRPVEVRRLG TVEYLDAWEL QRGLVDARVA GGSDALLLLQ HPSVYTAGKR
     TEPHERPADG TPVVDTDRGG KITWHGPGQL VGYPIVGLAE PLDVVNFVRR IEEALIAVCT
     GLGLDAGRVE GRSGVWLPGD GLRPERKIGA IGIRVSRGTT LHGFALNCDC DLSAFSAIVP
     CGIADAGVTS LTAELGRRVT VDEVTDAVAA RVCDALDGRL AVSGVSVDTY ASGVASTQ