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Protein

Lipoyl synthase

Gene

lipA

Organism
Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the radical-mediated insertion of two sulfur atoms into the C-6 and C-8 positions of the octanoyl moiety bound to the lipoyl domains of lipoate-dependent enzymes, thereby converting the octanoylated domains into lipoylated derivatives.UniRule annotation

Catalytic activityi

Protein N6-(octanoyl)lysine + an [Fe-S] cluster scaffold protein carrying a [4Fe-4S]2+ cluster + 2 S-adenosyl-L-methionine + 2 oxidized [2Fe-2S] ferredoxin + 6 H+ = protein N6-(dihydrolipoyl)lysine + an [Fe-S] cluster scaffold protein + 2 sulfide + 4 Fe3+ + 2 L-methionine + 2 5'-deoxyadenosine + 2 reduced [2Fe-2S] ferredoxin.UniRule annotation

Cofactori

[4Fe-4S] clusterUniRule annotationNote: Binds 2 [4Fe-4S] clusters per subunit. One cluster is coordinated with 3 cysteines and an exchangeable S-adenosyl-L-methionine.UniRule annotation

Pathwayi: protein lipoylation via endogenous pathway

This protein is involved in step 2 of the subpathway that synthesizes protein N(6)-(lipoyl)lysine from octanoyl-[acyl-carrier-protein].UniRule annotation
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Octanoyltransferase (lipB)
  2. Lipoyl synthase (lipA)
This subpathway is part of the pathway protein lipoylation via endogenous pathway, which is itself part of Protein modification.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes protein N(6)-(lipoyl)lysine from octanoyl-[acyl-carrier-protein], the pathway protein lipoylation via endogenous pathway and in Protein modification.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi67Iron-sulfur 1 (4Fe-4S)UniRule annotation1
Metal bindingi72Iron-sulfur 1 (4Fe-4S)UniRule annotation1
Metal bindingi78Iron-sulfur 1 (4Fe-4S)UniRule annotation1
Metal bindingi93Iron-sulfur 2 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi97Iron-sulfur 2 (4Fe-4S-S-AdoMet)UniRule annotation1
Metal bindingi100Iron-sulfur 2 (4Fe-4S-S-AdoMet)UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionTransferase
Ligand4Fe-4S, Iron, Iron-sulfur, Metal-binding, S-adenosyl-L-methionine

Enzyme and pathway databases

BioCyciHINF71421:G1GJ1-26-MONOMER
UniPathwayiUPA00538; UER00593

Names & Taxonomyi

Protein namesi
Recommended name:
Lipoyl synthaseUniRule annotation (EC:2.8.1.8UniRule annotation)
Alternative name(s):
Lip-synUniRule annotation
Short name:
LSUniRule annotation
Lipoate synthaseUniRule annotation
Lipoic acid synthaseUniRule annotation
Sulfur insertion protein LipAUniRule annotation
Gene namesi
Name:lipAUniRule annotation
Ordered Locus Names:HI_0026
OrganismiHaemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
Taxonomic identifieri71421 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPasteurellalesPasteurellaceaeHaemophilus
Proteomesi
  • UP000000579 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001023201 – 320Lipoyl synthaseAdd BLAST320

Interactioni

Protein-protein interaction databases

STRINGi71421.HI0026

Structurei

3D structure databases

ProteinModelPortaliP44463
SMRiP44463
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the radical SAM superfamily. Lipoyl synthase family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105C0G Bacteria
COG0320 LUCA
KOiK03644
OMAiPYCDIDF
PhylomeDBiP44463

Family and domain databases

Gene3Di3.20.20.70, 1 hit
HAMAPiMF_00206 Lipoyl_synth, 1 hit
InterProiView protein in InterPro
IPR013785 Aldolase_TIM
IPR006638 Elp3/MiaB/NifB
IPR031691 LIAS_N
IPR003698 Lipoyl_synth
IPR007197 rSAM
PfamiView protein in Pfam
PF16881 LIAS_N, 1 hit
PF04055 Radical_SAM, 1 hit
PIRSFiPIRSF005963 Lipoyl_synth, 1 hit
SFLDiSFLDG01058 lipoyl_synthase_like, 1 hit
SFLDS00029 Radical_SAM, 1 hit
SMARTiView protein in SMART
SM00729 Elp3, 1 hit
TIGRFAMsiTIGR00510 lipA, 1 hit

Sequencei

Sequence statusi: Complete.

P44463-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSTPFKMERG VKYRDAAKTS IIPVKNIDPN QDLLKKPEWM KIKLPASSAK
60 70 80 90 100
IESIKNGMRR HGLHSVCEEA SCPNLHECFN HGTATFMILG AICTRRCPFC
110 120 130 140 150
DVAHGKPLPP DPEEPQKLAE TIQDMKLKYV VITSVDRDDL PDRGAGHFSE
160 170 180 190 200
CVKAVRELNP NIKIEILVPD FRGRITQALE KLKDNPPDVF NHNLENVPRL
210 220 230 240 250
YKEIRPGADY EWSLKLLREF KEIFPNIPTK SGLMVGLGET NEEILQVMQD
260 270 280 290 300
LRDNGVTMLT LGQYLQPSRH HLPVARYVPP TEFDEFRDKA NEMGFEHAAC
310 320
GPFVRSSYHA DLQASGGLVK
Length:320
Mass (Da):36,197
Last modified:November 1, 1995 - v1
Checksum:i7D4C4136925450C6
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L42023 Genomic DNA Translation: AAC21704.1
PIRiG64043
RefSeqiNP_438199.1, NC_000907.1
WP_005652627.1, NC_000907.1

Genome annotation databases

EnsemblBacteriaiAAC21704; AAC21704; HI_0026
GeneIDi950923
KEGGihin:HI0026
PATRICifig|71421.8.peg.26

Similar proteinsi

Entry informationi

Entry nameiLIPA_HAEIN
AccessioniPrimary (citable) accession number: P44463
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: November 1, 1995
Last modified: May 23, 2018
This is version 122 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome
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Main funding by: National Institutes of Health