LIPB_HAEIE
ID LIPB_HAEIE Reviewed; 212 AA.
AC A5UBB1;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 10-JUL-2007, sequence version 1.
DT 03-AUG-2022, entry version 80.
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};
GN OrderedLocusNames=CGSHiEE_03175;
OS Haemophilus influenzae (strain PittEE).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Haemophilus.
OX NCBI_TaxID=374930;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PittEE;
RX PubMed=17550610; DOI=10.1186/gb-2007-8-6-r103;
RA Hogg J.S., Hu F.Z., Janto B., Boissy R., Hayes J., Keefe R., Post J.C.,
RA Ehrlich G.D.;
RT "Characterization and modeling of the Haemophilus influenzae core and
RT supragenomes based on the complete genomic sequences of Rd and 12 clinical
RT nontypeable strains.";
RL Genome Biol. 8:R103.1-R103.18(2007).
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; CP000671; ABQ98062.1; -; Genomic_DNA.
DR RefSeq; WP_005649858.1; NC_009566.1.
DR AlphaFoldDB; A5UBB1; -.
DR SMR; A5UBB1; -.
DR KEGG; hip:CGSHiEE_03175; -.
DR HOGENOM; CLU_035168_3_1_6; -.
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 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..212
FT /note="Octanoyltransferase"
FT /id="PRO_1000001104"
FT DOMAIN 31..209
FT /note="BPL/LPL catalytic"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01067"
FT ACT_SITE 169
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 138..140
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT BINDING 151..153
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
FT SITE 135
FT /note="Lowers pKa of active site Cys"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00013"
SQ SEQUENCE 212 AA; 24075 MW; A66F2476EA746EE4 CRC64;
MNNSLIVRQL GLQDYQEIWH KMQDFTDTRN AETQDEIWLV QHYPVFTQGQ AGKPEHLLQR
SEIPVVQSDR GGQITYHAPG QQVMYVLIDI KRHKNLNVRQ LVTALEQTVV KTLAEYGIES
YPKPDAPGVY VDGKKICSLG LRIRRGCSFH GLALNINMDL NPFHYINPCG YAGLEMCQLA
DFVNQDEADC DNVSAKLIKH FADLLGYNIT TL