ID LIPB_HALHL Reviewed; 217 AA.
AC A1WVS9;
DT 26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-FEB-2007, sequence version 1.
DT 27-MAR-2024, entry version 92.
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=Hhal_1015;
OS Halorhodospira halophila (strain DSM 244 / SL1) (Ectothiorhodospira
OS halophila (strain DSM 244 / SL1)).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Chromatiales;
OC Ectothiorhodospiraceae; Halorhodospira.
OX NCBI_TaxID=349124;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 244 / SL1;
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 Saunders E., Brettin T., Bruce D., Han C., Tapia R., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Hoff W.,
RA Richardson P.;
RT "Complete sequence of Halorhodospira halophila SL1.";
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; CP000544; ABM61791.1; -; Genomic_DNA.
DR RefSeq; WP_011813814.1; NC_008789.1.
DR AlphaFoldDB; A1WVS9; -.
DR SMR; A1WVS9; -.
DR STRING; 349124.Hhal_1015; -.
DR KEGG; hha:Hhal_1015; -.
DR eggNOG; COG0321; Bacteria.
DR HOGENOM; CLU_035168_3_1_6; -.
DR OrthoDB; 9787061at2; -.
DR UniPathway; UPA00538; UER00592.
DR Proteomes; UP000000647; 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:0044249; P:cellular biosynthetic process; IEA:UniProt.
DR GO; GO:1901576; P:organic substance biosynthetic process; IEA:UniProt.
DR GO; GO:0036211; P:protein modification process; IEA:InterPro.
DR CDD; cd16444; LipB; 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 NCBIfam; TIGR00214; lipB; 1.
DR PANTHER; PTHR10993:SF7; LIPOYLTRANSFERASE 2, MITOCHONDRIAL-RELATED; 1.
DR PANTHER; PTHR10993; OCTANOYLTRANSFERASE; 1.
DR PIRSF; PIRSF016262; LPLase; 1.
DR SUPFAM; SSF55681; Class II aaRS and biotin synthetases; 1.
DR PROSITE; PS51733; BPL_LPL_CATALYTIC; 1.
DR PROSITE; PS01313; LIPB; 1.
PE 3: Inferred from homology;
KW Acyltransferase; Cytoplasm; Reference proteome; Transferase.
FT CHAIN 1..217
FT /note="Octanoyltransferase"
FT /id="PRO_0000321637"
FT DOMAIN 34..216
FT /note="BPL/LPL catalytic"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01067"
FT ACT_SITE 171
FT /note="Acyl-thioester intermediate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT BINDING 73..80
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT BINDING 140..142
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT BINDING 153..155
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT SITE 137
FT /note="Lowers pKa of active site Cys"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
SQ SEQUENCE 217 AA; 24096 MW; 3E08DFDDD0D5196F CRC64;
MPCALEHIHT RYLGEQPYEP TWTAMRTFTE ERSSETRDEL WLLQHPPVYT LGQAGRPEHI
LDTGETPVVH TDRGGQVTWH GPGQLVAYPL LDLRRWGLGV RTLVHALEQS VVSLLAAYGV
PSHRREDAPG VYVDGAKVAA LGIRVRRGCS YHGLSLNVCN DPAPFERIHP CGYAGLTTTR
VHDLGITTPL DRLEVELGIY LLQAIDAASR ASRHDRA
//
