ID   LIPB_PSYCK              Reviewed;         285 AA.
AC   Q1QBT8;
DT   27-JUN-2006, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   03-AUG-2022, entry version 86.
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=Pcryo_1084;
OS   Psychrobacter cryohalolentis (strain ATCC BAA-1226 / DSM 17306 / VKM B-2378
OS   / K5).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Moraxellales; Moraxellaceae;
OC   Psychrobacter.
OX   NCBI_TaxID=335284;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1226 / DSM 17306 / VKM B-2378 / K5;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Dalin E., Tice H., Pitluck S., Brettin T., Bruce D.,
RA   Han C., Tapia R., Sims D.R., Gilna P., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Richardson P.;
RT   "Complete sequence of chromosome of Psychrobacter cryohalolentis K5.";
RL   Submitted (MAR-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; CP000323; ABE74865.1; -; Genomic_DNA.
DR   RefSeq; WP_011513421.1; NC_007969.1.
DR   AlphaFoldDB; Q1QBT8; -.
DR   SMR; Q1QBT8; -.
DR   STRING; 335284.Pcryo_1084; -.
DR   KEGG; pcr:Pcryo_1084; -.
DR   eggNOG; COG0321; Bacteria.
DR   HOGENOM; CLU_035168_3_1_6; -.
DR   OMA; FNAINPC; -.
DR   UniPathway; UPA00538; UER00592.
DR   Proteomes; UP000002425; 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   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..285
FT                   /note="Octanoyltransferase"
FT                   /id="PRO_0000242751"
FT   DOMAIN          50..277
FT                   /note="BPL/LPL catalytic"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01067"
FT   ACT_SITE        220
FT                   /note="Acyl-thioester intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         89..96
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         189..191
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   BINDING         202..204
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT   SITE            186
FT                   /note="Lowers pKa of active site Cys"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
SQ   SEQUENCE   285 AA;  31854 MW;  C4EA5D0F7C3B67ED CRC64;
     MPNTMQALHT RPLNENLITK SLTAADYVAT LDAMLSRTLE RISLKKEQGL RTPDELWIVD
     HNDVYTLGQA GKEEHILQRT NTPIIKTDRG GQVTWHGHGQ LVMYWLFDLD SISWSVRNMV
     SHAEQAIEDV VNDCLKSTAS TDTNHISARA RRDAPGVYLY ADMATETDSA PTSDEIEVDN
     TIMIGKIASL GFKIKHGFSY HGIAINLDCD LSAFNAINPC GYAGMQMLRL ADFVNMNQAT
     NIQPNNLPLT DDKKTLTYEQ FTQQLIDNIA QRHAGDIPLR ELAPK