ATP18_TRYBB
ID ATP18_TRYBB Reviewed; 188 AA.
AC P0DPG4;
DT 23-MAY-2018, integrated into UniProtKB/Swiss-Prot.
DT 23-MAY-2018, sequence version 1.
DT 25-MAY-2022, entry version 8.
DE RecName: Full=ATP synthase subunit p18, mitochondrial {ECO:0000303|PubMed:29247468};
DE AltName: Full=ATP synthase F1 subunit p18 {ECO:0000303|PubMed:19436713};
DE Flags: Precursor;
GN ORFNames=Tb427.05.1710 {ECO:0000303|PubMed:19436713};
OS Trypanosoma brucei brucei.
OC Eukaryota; Discoba; Euglenozoa; Kinetoplastea; Metakinetoplastina;
OC Trypanosomatida; Trypanosomatidae; Trypanosoma.
OX NCBI_TaxID=5702;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 19-188, X-RAY CRYSTALLOGRAPHY (3.2
RP ANGSTROMS) OF 19-188, FUNCTION, SUBUNIT, AND SUBCELLULAR LOCATION.
RC STRAIN=427;
RX PubMed=29440423; DOI=10.1073/pnas.1720940115;
RA Montgomery M.G., Gahura O., Leslie A.G.W., Zikova A., Walker J.E.;
RT "ATP synthase from Trypanosoma brucei has an elaborated canonical F1-domain
RT and conventional catalytic sites.";
RL Proc. Natl. Acad. Sci. U.S.A. 115:2102-2107(2018).
RN [2]
RP FUNCTION, SUBCELLULAR LOCATION, SUBUNIT, IDENTIFICATION BY MASS
RP SPECTROMETRY, AND NOMENCLATURE.
RC STRAIN=427;
RX PubMed=19436713; DOI=10.1371/journal.ppat.1000436;
RA Zikova A., Schnaufer A., Dalley R.A., Panigrahi A.K., Stuart K.D.;
RT "The F(0)F(1)-ATP synthase complex contains novel subunits and is essential
RT for procyclic Trypanosoma brucei.";
RL PLoS Pathog. 5:E1000436-E1000436(2009).
RN [3]
RP FUNCTION, DISRUPTION PHENOTYPE, PROTEIN SEQUENCE OF 19-23, SUBCELLULAR
RP LOCATION, TOPOLOGY, SUBUNIT, AND IDENTIFICATION BY MASS SPECTROMETRY.
RC STRAIN=427;
RX PubMed=29247468; DOI=10.1111/febs.14364;
RA Gahura O., Subrtova K., Vachova H., Panicucci B., Fearnley I.M.,
RA Harbour M.E., Walker J.E., Zikova A.;
RT "The F1-ATPase from Trypanosoma brucei is elaborated by three copies of an
RT additional p18-subunit.";
RL FEBS J. 285:614-628(2018).
CC -!- FUNCTION: Mitochondrial membrane ATP synthase (F(1)F(o) ATP synthase)
CC produces ATP from ADP in the presence of a proton gradient across the
CC membrane which is generated by electron transport complexes of the
CC respiratory chain (PubMed:19436713, PubMed:29247468). F-type ATPases
CC consist of two structural domains, F(1) - containing the
CC extramembraneous catalytic core, and F(o) - containing the membrane
CC proton channel, linked together by a central stalk and a peripheral
CC stalk (PubMed:19436713, PubMed:29247468, PubMed:29440423). During
CC catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via
CC a rotary mechanism of the central stalk subunits to proton
CC translocation. Subunits alpha and beta form the catalytic core in F(1)
CC (PubMed:19436713, PubMed:29440423). Rotation of the central stalk
CC against the surrounding alpha(3)beta(3) subunits leads to hydrolysis of
CC ATP in three separate catalytic sites on the beta subunits (Probable).
CC Contrary to the procyclic, insect form that requires F(1)F(o) ATP
CC synthase for ATP synthesis, the bloodstream form relies on ATP
CC hydrolysis by F(1)F(o) ATP synthase to maintain its mitochondrial
CC membrane potential (PubMed:29247468). {ECO:0000269|PubMed:19436713,
CC ECO:0000269|PubMed:29247468, ECO:0000269|PubMed:29440423, ECO:0000305}.
CC -!- SUBUNIT: F-type ATPases have 2 components, F(1) - the catalytic core
CC - and F(o) - the membrane proton channel. F(1) has five subunits:
CC alpha(3), beta(3), gamma(1), delta(1), epsilon(1), plus the additional
CC subunit P18 (Tb427.05.1710) that is not present in F(1)F(o) ATP
CC synthase from metazoa (PubMed:19436713, PubMed:29247468,
CC PubMed:29440423). Subunit P18 (Tb927.5.1710) interacts with the alpha
CC subunit with a 1:1 stoichiometry; the interaction is direct
CC (PubMed:29440423). Subunit gamma is part of the central stalk
CC (PubMed:29440423). F(o) has three main subunits: a, b and c
CC (PubMed:19436713). The trypanosomal ATPase complex contains additional
CC subunits that are not present in the F(1)F(o) ATP synthase from metazoa
CC (PubMed:19436713, PubMed:29247468, PubMed:29440423).
CC {ECO:0000269|PubMed:19436713, ECO:0000269|PubMed:29247468,
CC ECO:0000269|PubMed:29440423}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion. Mitochondrion inner membrane
CC {ECO:0000269|PubMed:19436713, ECO:0000269|PubMed:29247468,
CC ECO:0000269|PubMed:29440423}; Peripheral membrane protein
CC {ECO:0000269|PubMed:19436713, ECO:0000269|PubMed:29247468,
CC ECO:0000269|PubMed:29440423}; Matrix side {ECO:0000305|PubMed:19436713,
CC ECO:0000305|PubMed:29247468, ECO:0000305|PubMed:29440423}.
CC -!- DISRUPTION PHENOTYPE: RNAi-mediated knockdown of the protein impairs
CC assembly of the F(1) component and slows the proliferation rate of
CC procyclic cells that are cultivated in vitro in the presence of
CC glucose. RNAi-mediated knockdown of the protein also slows the
CC proliferation rate of the bloodstream form of the parasite, despite the
CC fact that the organism can profit from blood glucose as source of
CC energy. Mitochondrial membrane potential is dramatically reduced in the
CC bloodstream form that relies on ATP hydrolysis to maintain
CC mitochondrial membrane potential. {ECO:0000269|PubMed:29247468}.
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DR EMBL; LS423648; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR PDB; 6F5D; X-ray; 3.20 A; J/K/L=19-188.
DR PDBsum; 6F5D; -.
DR AlphaFoldDB; P0DPG4; -.
DR SMR; P0DPG4; -.
DR TCDB; 3.A.2.1.13; the h(+)- or na(+)-translocating f-type, v-type and a-type atpase (f-atpase) superfamily.
DR GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0045261; C:proton-transporting ATP synthase complex, catalytic core F(1); IEA:UniProtKB-KW.
DR GO; GO:0006754; P:ATP biosynthetic process; IEA:UniProtKB-KW.
DR GO; GO:0006811; P:ion transport; IEA:UniProtKB-KW.
DR Gene3D; 1.25.40.10; -; 1.
DR InterPro; IPR011990; TPR-like_helical_dom_sf.
PE 1: Evidence at protein level;
KW 3D-structure; ATP synthesis; CF(1); Direct protein sequencing;
KW Hydrogen ion transport; Ion transport; Membrane; Mitochondrion;
KW Mitochondrion inner membrane; Repeat; Transit peptide; Transport.
FT TRANSIT 1..18
FT /note="Mitochondrion"
FT /evidence="ECO:0000269|PubMed:29247468"
FT CHAIN 19..188
FT /note="ATP synthase subunit p18, mitochondrial"
FT /id="PRO_0000444146"
FT REPEAT 36..70
FT /note="PPR"
FT /evidence="ECO:0000305|PubMed:29440423"
FT REPEAT 75..109
FT /note="PPR"
FT /evidence="ECO:0000305|PubMed:29440423"
FT REPEAT 116..146
FT /note="PPR"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00708,
FT ECO:0000305|PubMed:29440423"
SQ SEQUENCE 188 AA; 21242 MW; B48CAB9653C5CEA4 CRC64;
MMRRVYSPVF CSVAAARFAA TSAAKKYDLF GYEVDTNTAP WIEKIKKCKY YDEAGEVLVN
MNVSNCPPDI ATYNATLQCI YQSPSKQSTP VDNESKFCAM MDLLEEMQHR NRLKPNEESW
TWVMKECVKS GQFRLGYCIQ QVMETECKGC PADLVKANEA NAQKAKTEGK EHPGHLSQQA
GLFDVKVE
