ID L8M5D6_9CYAN Unreviewed; 229 AA.
AC L8M5D6;
DT 03-APR-2013, integrated into UniProtKB/TrEMBL.
DT 03-APR-2013, sequence version 1.
DT 24-JAN-2024, entry version 52.
DE RecName: Full=Octanoyltransferase {ECO:0000256|HAMAP-Rule:MF_00013, ECO:0000256|PIRNR:PIRNR016262};
DE EC=2.3.1.181 {ECO:0000256|HAMAP-Rule:MF_00013, ECO:0000256|PIRNR:PIRNR016262};
DE AltName: Full=Lipoate-protein ligase B {ECO:0000256|HAMAP-Rule:MF_00013};
DE AltName: Full=Lipoyl/octanoyl transferase {ECO:0000256|HAMAP-Rule:MF_00013};
DE AltName: Full=Octanoyl-[acyl-carrier-protein]-protein N-octanoyltransferase {ECO:0000256|HAMAP-Rule:MF_00013};
GN Name=lipB {ECO:0000256|HAMAP-Rule:MF_00013};
GN ORFNames=Xen7305DRAFT_00023730 {ECO:0000313|EMBL:ELS02655.1};
OS Xenococcus sp. PCC 7305.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Pleurocapsales; Xenococcaceae;
OC Xenococcus.
OX NCBI_TaxID=102125 {ECO:0000313|EMBL:ELS02655.1, ECO:0000313|Proteomes:UP000011203};
RN [1] {ECO:0000313|EMBL:ELS02655.1, ECO:0000313|Proteomes:UP000011203}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7305 {ECO:0000313|EMBL:ELS02655.1,
RC ECO:0000313|Proteomes:UP000011203};
RX PubMed=23277585; DOI=10.1073/pnas.1217107110;
RA Shih P.M., Wu D., Latifi A., Axen S.D., Fewer D.P., Talla E., Calteau A.,
RA Cai F., Tandeau de Marsac N., Rippka R., Herdman M., Sivonen K.,
RA Coursin T., Laurent T., Goodwin L., Nolan M., Davenport K.W., Han C.S.,
RA Rubin E.M., Eisen J.A., Woyke T., Gugger M., Kerfeld C.A.;
RT "Improving the coverage of the cyanobacterial phylum using diversity-driven
RT genome sequencing.";
RL Proc. Natl. Acad. Sci. U.S.A. 110:1053-1058(2013).
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:0000256|ARBA:ARBA00024732, ECO:0000256|HAMAP-Rule:MF_00013,
CC ECO:0000256|PIRNR:PIRNR016262}.
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:0000256|ARBA:ARBA00000953, ECO:0000256|HAMAP-
CC Rule:MF_00013, ECO:0000256|PIRNR:PIRNR016262};
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:0000256|ARBA:ARBA00004821, ECO:0000256|HAMAP-
CC Rule:MF_00013, ECO:0000256|PIRNR:PIRNR016262}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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:0000256|HAMAP-Rule:MF_00013}.
CC -!- SIMILARITY: Belongs to the LipB family. {ECO:0000256|HAMAP-
CC Rule:MF_00013, ECO:0000256|PIRNR:PIRNR016262}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:ELS02655.1}.
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DR EMBL; ALVZ01000187; ELS02655.1; -; Genomic_DNA.
DR RefSeq; WP_006510218.1; NZ_ALVZ01000187.1.
DR AlphaFoldDB; L8M5D6; -.
DR STRING; 102125.Xen7305DRAFT_00023730; -.
DR PATRIC; fig|102125.3.peg.3041; -.
DR eggNOG; COG0321; Bacteria.
DR OrthoDB; 9787061at2; -.
DR UniPathway; UPA00538; UER00592.
DR Proteomes; UP000011203; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0016874; F:ligase activity; IEA:UniProtKB-KW.
DR GO; GO:0033819; F:lipoyl(octanoyl) transferase activity; IEA:UniProtKB-EC.
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 {ECO:0000256|ARBA:ARBA00023315, ECO:0000256|HAMAP-
KW Rule:MF_00013}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00013};
KW Ligase {ECO:0000313|EMBL:ELS02655.1};
KW Reference proteome {ECO:0000313|Proteomes:UP000011203};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00013}.
FT DOMAIN 39..224
FT /note="BPL/LPL catalytic"
FT /evidence="ECO:0000259|PROSITE:PS51733"
FT ACT_SITE 186
FT /note="Acyl-thioester intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00013,
FT ECO:0000256|PIRSR:PIRSR016262-1"
FT BINDING 88..95
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00013,
FT ECO:0000256|PIRSR:PIRSR016262-2"
FT BINDING 155..157
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00013,
FT ECO:0000256|PIRSR:PIRSR016262-2"
FT BINDING 168..170
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00013,
FT ECO:0000256|PIRSR:PIRSR016262-2"
FT SITE 152
FT /note="Lowers pKa of active site Cys"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00013,
FT ECO:0000256|PIRSR:PIRSR016262-3"
SQ SEQUENCE 229 AA; 26119 MW; 5529B606A68C571A CRC64;
MANSQKQKRH CVVINWGLVA YQDAWLRQKS LVTERISNPD LEDILILSEH FPVYTLGTGA
STDFLKFDYD ESTSAKSDLK REVYRVERGG EVTYHCPGQL VGYPILNLRY YQQDLHWYLR
QLEEVIIRTV ATYGLNAERI SGLTGVWLEG KKIAAIGIKV RRWITMHGFA LNVCPDLTGF
QDIVPCGIID KPVGSLNEFI PNLTVAEVRV KLIRSFAEVF NVELENKVD
//