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Protein

Electron transfer flavoprotein subunit beta

Gene

etfB

Organism
Paracoccus denitrificans
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

The electron transfer flavoprotein serves as a specific electron acceptor for other dehydrogenases. It transfers the electrons to the main respiratory chain via ETF-ubiquinone oxidoreductase (ETF dehydrogenase).

Cofactori

Protein has several cofactor binding sites:
  • FADNote: Binds 1 FAD per dimer.
  • AMPNote: Binds 1 AMP per subunit.

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Electron transport, Transport

Keywords - Ligandi

FAD, Flavoprotein

Names & Taxonomyi

Protein namesi
Recommended name:
Electron transfer flavoprotein subunit beta
Short name:
Beta-ETF
Alternative name(s):
Electron transfer flavoprotein small subunit
Short name:
ETFSS
Gene namesi
Name:etfB
OrganismiParacoccus denitrificans
Taxonomic identifieri266 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhodobacteralesRhodobacteraceaeParacoccus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001678841 – 252Electron transfer flavoprotein subunit betaAdd BLAST252

Proteomic databases

PRIDEiP38975.

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta subunit.

Protein-protein interaction databases

DIPiDIP-6158N.
IntActiP38975. 1 interactor.
STRINGi1051075.PDI_3668.

Structurei

Secondary structure

1252
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Beta strandi2 – 6Combined sources5
Beta strandi9 – 11Combined sources3
Beta strandi33 – 35Combined sources3
Helixi37 – 50Combined sources14
Turni51 – 53Combined sources3
Beta strandi56 – 65Combined sources10
Helixi66 – 68Combined sources3
Helixi69 – 78Combined sources10
Beta strandi81 – 87Combined sources7
Helixi98 – 112Combined sources15
Beta strandi115 – 121Combined sources7
Turni124 – 126Combined sources3
Helixi131 – 139Combined sources9
Beta strandi142 – 152Combined sources11
Beta strandi154 – 163Combined sources10
Beta strandi166 – 180Combined sources15
Helixi192 – 198Combined sources7
Beta strandi203 – 207Combined sources5
Helixi208 – 211Combined sources4
Beta strandi218 – 225Combined sources8
Helixi239 – 243Combined sources5

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1EFPX-ray2.60B/D1-246[»]
ProteinModelPortaliP38975.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP38975.

Family & Domainsi

Sequence similaritiesi

Belongs to the ETF beta-subunit/FixA family.Curated

Phylogenomic databases

eggNOGiENOG4105TPV. Bacteria.
ENOG4111Y6N. LUCA.

Family and domain databases

CDDicd01714. ETF_beta. 1 hit.
Gene3Di3.40.50.620. 1 hit.
InterProiIPR000049. ET-Flavoprotein_bsu_CS.
IPR014730. ETF_a/b_N.
IPR012255. ETF_b.
IPR033948. ETF_beta_N.
IPR014729. Rossmann-like_a/b/a_fold.
[Graphical view]
PANTHERiPTHR21294. PTHR21294. 1 hit.
PfamiPF01012. ETF. 1 hit.
[Graphical view]
PIRSFiPIRSF000090. Beta-ETF. 1 hit.
SMARTiSM00893. ETF. 1 hit.
[Graphical view]
PROSITEiPS01065. ETF_BETA. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P38975-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKVLVPVKRL IDYNVKARVK SDGSGVDLAN VKMSMNPFDE IAVEEAIRLK
60 70 80 90 100
EKGQAEEIIA VSIGVKQAAE TLRTALAMGA DRAILVVAAD DVQQDIEPLA
110 120 130 140 150
VAKILAAVAR AEGTELIIAG KQAIDNDMNA TGQMLAAILG WAQATFASKV
160 170 180 190 200
EIEGAKAKVT REVDGGLQTI AVSLPAVVTA DLRLNEPRYA SLPNIMKAKK
210 220 230 240 250
KPLDEKTAAD YGVDVAPRLE VVSVREPEGR KAGIKVGSVD ELVGKLKEAG

VI
Length:252
Mass (Da):26,673
Last modified:February 1, 1995 - v1
Checksum:i00C43128BEA1EDED
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti10L → V AA sequence (PubMed:1576992).Curated1
Sequence conflicti23G → R AA sequence (PubMed:1576992).Curated1
Sequence conflicti163V → Y AA sequence (PubMed:1576992).Curated1
Sequence conflicti168Q → E AA sequence (PubMed:1576992).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L14864 Unassigned DNA. Translation: AAA03071.1.
PIRiA48008.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L14864 Unassigned DNA. Translation: AAA03071.1.
PIRiA48008.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1EFPX-ray2.60B/D1-246[»]
ProteinModelPortaliP38975.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-6158N.
IntActiP38975. 1 interactor.
STRINGi1051075.PDI_3668.

Proteomic databases

PRIDEiP38975.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiENOG4105TPV. Bacteria.
ENOG4111Y6N. LUCA.

Miscellaneous databases

EvolutionaryTraceiP38975.

Family and domain databases

CDDicd01714. ETF_beta. 1 hit.
Gene3Di3.40.50.620. 1 hit.
InterProiIPR000049. ET-Flavoprotein_bsu_CS.
IPR014730. ETF_a/b_N.
IPR012255. ETF_b.
IPR033948. ETF_beta_N.
IPR014729. Rossmann-like_a/b/a_fold.
[Graphical view]
PANTHERiPTHR21294. PTHR21294. 1 hit.
PfamiPF01012. ETF. 1 hit.
[Graphical view]
PIRSFiPIRSF000090. Beta-ETF. 1 hit.
SMARTiSM00893. ETF. 1 hit.
[Graphical view]
PROSITEiPS01065. ETF_BETA. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiETFB_PARDE
AccessioniPrimary (citable) accession number: P38975
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1995
Last sequence update: February 1, 1995
Last modified: November 30, 2016
This is version 81 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Direct protein sequencing

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.