ID U3K822_FICAL Unreviewed; 328 AA.
AC U3K822;
DT 13-NOV-2013, integrated into UniProtKB/TrEMBL.
DT 29-SEP-2021, sequence version 2.
DT 27-MAR-2024, entry version 45.
DE RecName: Full=Electron transfer flavoprotein subunit alpha {ECO:0000256|PIRNR:PIRNR000089};
DE Short=Alpha-ETF {ECO:0000256|PIRNR:PIRNR000089};
GN Name=ETFA {ECO:0000313|Ensembl:ENSFALP00000011176.2};
OS Ficedula albicollis (Collared flycatcher) (Muscicapa albicollis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Archelosauria; Archosauria; Dinosauria; Saurischia; Theropoda;
OC Coelurosauria; Aves; Neognathae; Passeriformes; Muscicapidae; Ficedula.
OX NCBI_TaxID=59894 {ECO:0000313|Ensembl:ENSFALP00000011176.2, ECO:0000313|Proteomes:UP000016665};
RN [1] {ECO:0000313|Ensembl:ENSFALP00000011176.2, ECO:0000313|Proteomes:UP000016665}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=23103876; DOI=10.1038/nature11584;
RA Ellegren H., Smeds L., Burri R., Olason P.I., Backstrom N., Kawakami T.,
RA Kunstner A., Makinen H., Nadachowska-Brzyska K., Qvarnstrom A., Uebbing S.,
RA Wolf J.B.;
RT "The genomic landscape of species divergence in Ficedula flycatchers.";
RL Nature 491:756-760(2012).
RN [2] {ECO:0000313|Ensembl:ENSFALP00000011176.2}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (SEP-2023) to UniProtKB.
CC -!- FUNCTION: The electron transfer flavoprotein serves as a specific
CC electron acceptor for several dehydrogenases, including five acyl-CoA
CC dehydrogenases, glutaryl-CoA and sarcosine dehydrogenase. It transfers
CC the electrons to the main mitochondrial respiratory chain via ETF-
CC ubiquinone oxidoreductase (ETF dehydrogenase).
CC {ECO:0000256|PIRNR:PIRNR000089}.
CC -!- COFACTOR:
CC Name=FAD; Xref=ChEBI:CHEBI:57692;
CC Evidence={ECO:0000256|PIRNR:PIRNR000089,
CC ECO:0000256|PIRSR:PIRSR000089-1};
CC Note=Binds 1 FAD per dimer. {ECO:0000256|PIRNR:PIRNR000089,
CC ECO:0000256|PIRSR:PIRSR000089-1};
CC -!- SUBUNIT: Heterodimer of an alpha and a beta subunit.
CC {ECO:0000256|PIRNR:PIRNR000089}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion matrix
CC {ECO:0000256|PIRNR:PIRNR000089}.
CC -!- SIMILARITY: Belongs to the ETF alpha-subunit/FixB family.
CC {ECO:0000256|ARBA:ARBA00005817, ECO:0000256|PIRNR:PIRNR000089}.
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DR AlphaFoldDB; U3K822; -.
DR STRING; 59894.ENSFALP00000011176; -.
DR Ensembl; ENSFALT00000011221.2; ENSFALP00000011176.2; ENSFALG00000010711.2.
DR eggNOG; KOG3954; Eukaryota.
DR GeneTree; ENSGT00390000013422; -.
DR HOGENOM; CLU_034178_0_0_1; -.
DR Proteomes; UP000016665; Chromosome 10.
DR GO; GO:0005759; C:mitochondrial matrix; IEA:UniProtKB-SubCell.
DR GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR CDD; cd01715; ETF_alpha; 1.
DR Gene3D; 3.40.50.620; HUPs; 1.
DR Gene3D; 3.40.50.1220; TPP-binding domain; 1.
DR InterPro; IPR029035; DHS-like_NAD/FAD-binding_dom.
DR InterPro; IPR014730; ETF_a/b_N.
DR InterPro; IPR001308; ETF_a/FixB.
DR InterPro; IPR033947; ETF_alpha_N.
DR InterPro; IPR014731; ETF_asu_C.
DR InterPro; IPR018206; ETF_asu_C_CS.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR PANTHER; PTHR43153; ELECTRON TRANSFER FLAVOPROTEIN ALPHA; 1.
DR PANTHER; PTHR43153:SF1; ELECTRON TRANSFER FLAVOPROTEIN SUBUNIT ALPHA, MITOCHONDRIAL; 1.
DR Pfam; PF01012; ETF; 1.
DR Pfam; PF00766; ETF_alpha; 1.
DR PIRSF; PIRSF000089; Electra_flavoP_a; 1.
DR SMART; SM00893; ETF; 1.
DR SUPFAM; SSF52402; Adenine nucleotide alpha hydrolases-like; 1.
DR SUPFAM; SSF52467; DHS-like NAD/FAD-binding domain; 1.
DR PROSITE; PS00696; ETF_ALPHA; 1.
PE 3: Inferred from homology;
KW Electron transport {ECO:0000256|PIRNR:PIRNR000089};
KW FAD {ECO:0000256|ARBA:ARBA00022827, ECO:0000256|PIRNR:PIRNR000089};
KW Flavoprotein {ECO:0000256|ARBA:ARBA00022630,
KW ECO:0000256|PIRNR:PIRNR000089};
KW Mitochondrion {ECO:0000256|PIRNR:PIRNR000089};
KW Reference proteome {ECO:0000313|Proteomes:UP000016665};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|PIRNR:PIRNR000089}.
FT DOMAIN 17..198
FT /note="Electron transfer flavoprotein alpha/beta-subunit N-
FT terminal"
FT /evidence="ECO:0000259|SMART:SM00893"
FT BINDING 218
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR000089-1"
FT BINDING 243..244
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR000089-1"
FT BINDING 257..261
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR000089-1"
FT BINDING 274..281
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR000089-1"
FT BINDING 295
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR000089-1"
SQ SEQUENCE 328 AA; 34675 MW; 61CBC6001FC7331D CRC64;
AEQAEQQASV LRRSQSTLVV AEHNNESLTP ITLNAITAAK RLGGEVSCLV AGTSCDKVAS
ELSKVQGVAK VLVAQHDAYK GFLAEELTPL IVETHKKFNY THICAGASAF GKNLIPRVAG
KLDVAPVSDI IEIKSPNTFV RTIYAGNIIC TVQCDEAIKV FTVRGTSFEA APVSGGSASV
EKLTPPPPVG ISEWIEQKLT KSDRPELTSA KVVVSGGRGL KSGENFKLLY DLADQLHAAV
GASRAAVDAG FVPNDMQVGQ TGKIVAPELY IAVGISGAIQ HLAGMKDSKT IVAINKDPEA
PIFQVADYGL VADLFQAVPE MTKLLKKK
//
