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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

Enzyme and pathway databases

BioCyciRETL1328306-WGS:GSTH-3871-MONOMER.
RETL1328306-WGS:GSTH-4742-MONOMER.

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)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 252252Electron transfer flavoprotein subunit betaPRO_0000167884Add
BLAST

Interactioni

Subunit structurei

Heterodimer of an alpha and a beta subunit.

Protein-protein interaction databases

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

Structurei

Secondary structure

1
252
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi2 – 65Combined sources
Beta strandi9 – 113Combined sources
Beta strandi33 – 353Combined sources
Helixi37 – 5014Combined sources
Turni51 – 533Combined sources
Beta strandi56 – 6510Combined sources
Helixi66 – 683Combined sources
Helixi69 – 7810Combined sources
Beta strandi81 – 877Combined sources
Helixi98 – 11215Combined sources
Beta strandi115 – 1217Combined sources
Turni124 – 1263Combined sources
Helixi131 – 1399Combined sources
Beta strandi142 – 15211Combined sources
Beta strandi154 – 16310Combined sources
Beta strandi166 – 18015Combined sources
Helixi192 – 1987Combined sources
Beta strandi203 – 2075Combined sources
Helixi208 – 2114Combined sources
Beta strandi218 – 2258Combined sources
Helixi239 – 2435Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1EFPX-ray2.60B/D1-246[»]
ProteinModelPortaliP38975.
SMRiP38975. Positions 1-246.
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

Gene3Di3.40.50.620. 1 hit.
InterProiIPR000049. ET-Flavoprotein_bsu_CS.
IPR014730. ETF_a/b_N.
IPR012255. ETF_b.
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)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti10 – 101L → V AA sequence (PubMed:1576992).Curated
Sequence conflicti23 – 231G → R AA sequence (PubMed:1576992).Curated
Sequence conflicti163 – 1631V → Y AA sequence (PubMed:1576992).Curated
Sequence conflicti168 – 1681Q → E AA sequence (PubMed:1576992).Curated

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
EntryMethodResolution (Å)ChainPositionsPDBsum
1EFPX-ray2.60B/D1-246[»]
ProteinModelPortaliP38975.
SMRiP38975. Positions 1-246.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

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

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiENOG4105TPV. Bacteria.
ENOG4111Y6N. LUCA.

Enzyme and pathway databases

BioCyciRETL1328306-WGS:GSTH-3871-MONOMER.
RETL1328306-WGS:GSTH-4742-MONOMER.

Miscellaneous databases

EvolutionaryTraceiP38975.

Family and domain databases

Gene3Di3.40.50.620. 1 hit.
InterProiIPR000049. ET-Flavoprotein_bsu_CS.
IPR014730. ETF_a/b_N.
IPR012255. ETF_b.
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 11, 2015
This is version 78 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.