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Protein

Succinate dehydrogenase flavoprotein subunit

Gene

sdhA

Organism
Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Two distinct, membrane-bound, FAD-containing enzymes are responsible for the catalysis of fumarate and succinate interconversion; the fumarate reductase is used in anaerobic growth, and the succinate dehydrogenase is used in aerobic growth.By similarity

Catalytic activityi

Succinate + a quinone = fumarate + a quinol.By similarity

Cofactori

FADBy similarity

Pathwayi: tricarboxylic acid cycle

This protein is involved in step 1 of the subpathway that synthesizes fumarate from succinate (bacterial route).By similarity
Proteins known to be involved in this subpathway in this organism are:
  1. Succinate dehydrogenase flavoprotein subunit (sdhA)
This subpathway is part of the pathway tricarboxylic acid cycle, which is itself part of Carbohydrate metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes fumarate from succinate (bacterial route), the pathway tricarboxylic acid cycle and in Carbohydrate metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei221FADBy similarity1
Binding sitei242SubstrateBy similarity1
Binding sitei254SubstrateBy similarity1
Active sitei286Proton acceptorBy similarity1
Binding sitei354SubstrateBy similarity1
Binding sitei388FADBy similarity1
Binding sitei399SubstrateBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi14 – 19FADBy similarity6
Nucleotide bindingi37 – 52FADBy similarityAdd BLAST16
Nucleotide bindingi404 – 405FADBy similarity2

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
Biological processElectron transport, Transport, Tricarboxylic acid cycle
LigandFAD, Flavoprotein

Enzyme and pathway databases

UniPathwayiUPA00223; UER01005

Names & Taxonomyi

Protein namesi
Recommended name:
Succinate dehydrogenase flavoprotein subunit (EC:1.3.5.1By similarity)
Gene namesi
Name:sdhA
Ordered Locus Names:c0801
OrganismiEscherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC)
Taxonomic identifieri199310 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
Proteomesi
  • UP000001410 Componenti: Chromosome

Subcellular locationi

  • Cell inner membrane By similarity; Peripheral membrane protein By similarity; Cytoplasmic side By similarity

GO - Cellular componenti

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001586541 – 588Succinate dehydrogenase flavoprotein subunitAdd BLAST588

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei45Tele-8alpha-FAD histidineBy similarity1
Modified residuei267N6-acetyllysineBy similarity1

Keywords - PTMi

Acetylation

Proteomic databases

PRIDEiP0AC42

Interactioni

Subunit structurei

Part of an enzyme complex containing four subunits: a flavoprotein, an iron-sulfur, cytochrome b-556, and a hydrophobic anchor protein. The complex forms trimers.By similarity

Protein-protein interaction databases

STRINGi199310.c0801

Structurei

3D structure databases

ProteinModelPortaliP0AC42
SMRiP0AC42
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiENOG4105C00 Bacteria
COG1053 LUCA
HOGENOMiHOG000160475
KOiK00239
OMAiGDSPWEH

Family and domain databases

Gene3Di3.50.50.60, 2 hits
3.90.700.10, 1 hit
InterProiView protein in InterPro
IPR003953 FAD-binding_2
IPR036188 FAD/NAD-bd_sf
IPR003952 FRD_SDH_FAD_BS
IPR037099 Fum_R/Succ_DH_flav-like_C_sf
IPR015939 Fum_Rdtase/Succ_DH_flav-like_C
IPR027477 Succ_DH/fumarate_Rdtase_cat_sf
IPR011281 Succ_DH_flav_su_fwd
IPR014006 Succ_Dhase_FrdA_Gneg
PfamiView protein in Pfam
PF00890 FAD_binding_2, 1 hit
PF02910 Succ_DH_flav_C, 1 hit
SUPFAMiSSF46977 SSF46977, 1 hit
SSF51905 SSF51905, 2 hits
SSF56425 SSF56425, 1 hit
TIGRFAMsiTIGR01816 sdhA_forward, 1 hit
TIGR01812 sdhA_frdA_Gneg, 1 hit
PROSITEiView protein in PROSITE
PS00504 FRD_SDH_FAD_BINDING, 1 hit

Sequencei

Sequence statusi: Complete.

P0AC42-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKLPVREFDA VVIGAGGAGM RAALQISQSG QTCALLSKVF PTRSHTVSAQ
60 70 80 90 100
GGITVALGNT HEDNWEWHMY DTVKGSDYIG DQDAIEYMCK TGPEAILELE
110 120 130 140 150
HMGLPFSRLD DGRIYQRPFG GQSKNFGGEQ AARTAAAADR TGHALLHTLY
160 170 180 190 200
QQNLKNHTTI FSEWYALDLV KNQDGAVVGC TALCIETGEV VYFKARATVL
210 220 230 240 250
ATGGAGRIYQ STTNAHINTG DGVGMAIRAG VPVQDMEMWQ FHPTGIAGAG
260 270 280 290 300
VLVTEGCRGE GGYLLNKHGE RFMERYAPNA KDLAGRDVVA RSIMIEIREG
310 320 330 340 350
RGCDGPWGPH AKLKLDHLGK EVLESRLPGI LELSRTFAHV DPVKEPIPVI
360 370 380 390 400
PTCHYMMGGI PTKVTGQALT VNEKGEDVVV PGLFAVGEIA CVSVHGANRL
410 420 430 440 450
GGNSLLDLVV FGRAAGLHLQ ESIAEQGALR DASESDVEAS LDRLNRWNNN
460 470 480 490 500
RNGEDPVAIR KALQECMQHN FSVFREGDAM AKGLEQLKVI RERLKNARLD
510 520 530 540 550
DTSSEFNTQR VECLELDNLM ETAYATAVSA NFRTESRGAH SRFDFPDRDD
560 570 580
ENWLCHSLYL PESESMTRRS VNMEPKLRPA FPPKIRTY
Length:588
Mass (Da):64,422
Last modified:November 8, 2005 - v1
Checksum:i837F9A63991B6CE8
GO

Sequence cautioni

The sequence AAN79274 differs from that shown. Reason: Erroneous initiation.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE014075 Genomic DNA Translation: AAN79274.1 Different initiation.
RefSeqiWP_000775540.1, NC_004431.1

Genome annotation databases

EnsemblBacteriaiAAN79274; AAN79274; c0801
KEGGiecc:c0801

Similar proteinsi

Entry informationi

Entry nameiSDHA_ECOL6
AccessioniPrimary (citable) accession number: P0AC42
Secondary accession number(s): P10444, P78282
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 8, 2005
Last sequence update: November 8, 2005
Last modified: March 28, 2018
This is version 92 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
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Main funding by: National Institutes of Health