LIAS_MEDTR
ID LIAS_MEDTR Reviewed; 378 AA.
AC B7FM45;
DT 05-OCT-2010, integrated into UniProtKB/Swiss-Prot.
DT 10-FEB-2009, sequence version 1.
DT 03-AUG-2022, entry version 55.
DE RecName: Full=Lipoyl synthase, mitochondrial {ECO:0000255|HAMAP-Rule:MF_03128};
DE EC=2.8.1.8 {ECO:0000255|HAMAP-Rule:MF_03128};
DE AltName: Full=Lipoate synthase {ECO:0000255|HAMAP-Rule:MF_03128};
DE Short=LS {ECO:0000255|HAMAP-Rule:MF_03128};
DE Short=Lip-syn {ECO:0000255|HAMAP-Rule:MF_03128};
DE AltName: Full=Lipoic acid synthase {ECO:0000255|HAMAP-Rule:MF_03128};
GN Name=LIP1 {ECO:0000255|HAMAP-Rule:MF_03128};
OS Medicago truncatula (Barrel medic) (Medicago tribuloides).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; fabids; Fabales; Fabaceae; Papilionoideae; 50 kb inversion clade;
OC NPAAA clade; Hologalegina; IRL clade; Trifolieae; Medicago.
OX NCBI_TaxID=3880;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RA Moskal W., Chan A., Cheung F., Xiao Y., Town C.D.;
RT "Medicago truncatula full length cDNA cloning project.";
RL Submitted (DEC-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the radical-mediated insertion of two sulfur atoms
CC into the C-6 and C-8 positions of the octanoyl moiety bound to the
CC lipoyl domains of lipoate-dependent enzymes, thereby converting the
CC octanoylated domains into lipoylated derivatives. {ECO:0000255|HAMAP-
CC Rule:MF_03128}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[[Fe-S] cluster scaffold protein carrying a second [4Fe-
CC 4S](2+) cluster] + 4 H(+) + N(6)-octanoyl-L-lysyl-[protein] + 2
CC oxidized [2Fe-2S]-[ferredoxin] + 2 S-adenosyl-L-methionine = (R)-
CC N(6)-dihydrolipoyl-L-lysyl-[protein] + 2 5'-deoxyadenosine + [[Fe-S]
CC cluster scaffold protein] + 4 Fe(3+) + 2 hydrogen sulfide + 2 L-
CC methionine + 2 reduced [2Fe-2S]-[ferredoxin]; Xref=Rhea:RHEA:16585,
CC Rhea:RHEA-COMP:9928, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC Rhea:RHEA-COMP:10475, Rhea:RHEA-COMP:14568, Rhea:RHEA-COMP:14569,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:17319, ChEBI:CHEBI:29034,
CC ChEBI:CHEBI:29919, ChEBI:CHEBI:33722, ChEBI:CHEBI:33737,
CC ChEBI:CHEBI:33738, ChEBI:CHEBI:57844, ChEBI:CHEBI:59789,
CC ChEBI:CHEBI:78809, ChEBI:CHEBI:83100; EC=2.8.1.8;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_03128};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_03128};
CC Note=Binds 2 [4Fe-4S] clusters per subunit. One cluster is coordinated
CC with 3 cysteines and an exchangeable S-adenosyl-L-methionine.
CC {ECO:0000255|HAMAP-Rule:MF_03128};
CC -!- PATHWAY: Protein modification; protein lipoylation via endogenous
CC pathway; protein N(6)-(lipoyl)lysine from octanoyl-[acyl-carrier-
CC protein]: step 2/2. {ECO:0000255|HAMAP-Rule:MF_03128}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion {ECO:0000255|HAMAP-Rule:MF_03128}.
CC -!- MISCELLANEOUS: This protein may be expected to contain an N-terminal
CC transit peptide but none has been predicted. {ECO:0000255|HAMAP-
CC Rule:MF_03128}.
CC -!- SIMILARITY: Belongs to the radical SAM superfamily. Lipoyl synthase
CC family. {ECO:0000255|HAMAP-Rule:MF_03128}.
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DR EMBL; BT053168; ACJ85828.1; -; mRNA.
DR AlphaFoldDB; B7FM45; -.
DR SMR; B7FM45; -.
DR UniPathway; UPA00538; UER00593.
DR ExpressionAtlas; B7FM45; differential.
DR GO; GO:0005759; C:mitochondrial matrix; IEA:EnsemblPlants.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016992; F:lipoate synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0102552; F:lipoyl synthase activity (acting on glycine-cleavage complex H protein; IEA:UniProtKB-EC.
DR GO; GO:0102553; F:lipoyl synthase activity (acting on pyruvate dehydrogenase E2 protein); IEA:UniProtKB-EC.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009249; P:protein lipoylation; IEA:UniProtKB-UniRule.
DR Gene3D; 3.20.20.70; -; 1.
DR HAMAP; MF_00206; Lipoyl_synth; 1.
DR HAMAP; MF_03128; Lipoyl_synth_plantM; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR006638; Elp3/MiaB/NifB.
DR InterPro; IPR031691; LIAS_N.
DR InterPro; IPR003698; Lipoyl_synth.
DR InterPro; IPR027527; Lipoyl_synth_mt.
DR InterPro; IPR007197; rSAM.
DR PANTHER; PTHR10949; PTHR10949; 1.
DR Pfam; PF16881; LIAS_N; 1.
DR Pfam; PF04055; Radical_SAM; 1.
DR PIRSF; PIRSF005963; Lipoyl_synth; 1.
DR SFLD; SFLDF00271; lipoyl_synthase; 1.
DR SFLD; SFLDS00029; Radical_SAM; 1.
DR SMART; SM00729; Elp3; 1.
DR TIGRFAMs; TIGR00510; lipA; 1.
DR PROSITE; PS51918; RADICAL_SAM; 1.
PE 2: Evidence at transcript level;
KW 4Fe-4S; Iron; Iron-sulfur; Metal-binding; Mitochondrion;
KW S-adenosyl-L-methionine; Transferase.
FT CHAIN 1..378
FT /note="Lipoyl synthase, mitochondrial"
FT /id="PRO_0000398847"
FT DOMAIN 125..345
FT /note="Radical SAM core"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01266"
FT BINDING 109
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 114
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 120
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 140
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 144
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 147
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /ligand_note="4Fe-4S-S-AdoMet"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
FT BINDING 356
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_03128"
SQ SEQUENCE 378 AA; 41913 MW; 26864D640120AAF2 CRC64;
MMYSRFRTVA KNLKSTTKPF SFTTATTTTT VSSSEFPQNL TELRARLARE SPSLSDFISL
KSNNAYSVEV GTKKNPLPKP KWMKESIPGG WKYVQIKKKL RELKLHTVCE EAKCPNMGEC
WSGGETGTAT ATIMILGDTC TRGCRFCNVK TSRTPPPPDP DEPTNVAEAI ASWGLDYVVI
TSVGRDDLPD QGSSHFTETV QKLKILKPSI LIEALVPDFR GNAECVEKVS KSGLDVFAHN
IETVEELQSA VRDHRANFNQ SLDVLRMAKD YAPAGTLTKT SIMLGCGETP DQIVKTMEKV
RAAGVDVMTF GQYMRPSKRH MPVSEYITPE AFEKYQTLGM EMGFRYVASG PMVRSSYKAG
EFYIKSMIDS DRAVSSQS
