N-Terminal Presequence-Independent Import of Phosphofructokinase into Hydrogenosomes of Trichomonas vaginalis
N-Terminal Presequence-Independent Import of Phosphofructokinase into Hydrogenosomes of Trichomonas vaginalis
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N 端前序列独立地将磷酸果糖激酶导入阴道毛滴虫的氢基因体中
DOI:
10.1128/ec.00104-15
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Tachezy J
中科院分区:
文献类型:
--
作者:
Rada P;Makki AR;Zimorski V;Garg S;Hampl V;Hrdý I;Gould SB;Tachezy J
Mitochondrial evolution entailed the origin of protein import machinery that allows nuclear-encoded proteins to be targeted to the organelle, as well as the origin of cleavable N-terminal targeting sequences (NTS) that allow efficient sorting and import of matrix proteins. In hydrogenosomes and mitosomes, reduced forms of mitochondria with reduced proteomes, NTS-independent targeting of matrix proteins is known. Here, we studied the cellular localization of two glycolytic enzymes in the anaerobic pathogen Trichomonas vaginalis: PPi-dependent phosphofructokinase (TvPPi-PFK), which is the main glycolytic PFK activity of the protist, and ATP-dependent PFK (TvATP-PFK), the function of which is less clear.TvPPi-PFK was detected predominantly in the cytosol, as expected, while all fourTvATP-PFK paralogues were imported into T. vaginalis hydrogenosomes, although none of them possesses an NTS. The heterologous expression ofTvATP-PFK in Saccharomyces cerevisiae revealed an intrinsic capability of the protein to be recognized and imported into yeast mitochondria, whereas yeast ATP-PFK resides in the cytosol.TvATP-PFK consists of only a catalytic domain, similarly to “short” bacterial enzymes, whileScATP-PFK includes an N-terminal extension, a catalytic domain, and a C-terminal regulatory domain. Expression of the catalytic domain ofScATP-PFK and short Escherichia coli ATP-PFK in T. vaginalis resulted in their partial delivery to hydrogenosomes. These results indicate thatTvATP-PFK and the homologous ATP-PFKs possess internal structural targeting information that is recognized by the hydrogenosomal import machinery. From an evolutionary perspective, the predisposition of ancient ATP-PFK to be recognized and imported into hydrogenosomes might be a relict from the early phases of organelle evolution.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
K. Henze
通讯作者:
K. Henze
影响因子:
4
作者:
Schneider RE;Brown MT;Shiflett AM;Dyall SD;Hayes RD;Xie Y;Loo JA;Johnson PJ
通讯作者:
Johnson PJ
DOI:
--
发表时间:
1997
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
P. Michels;N. Chevalier;F. Opperdoes;Mark H. Rider;D. J. Rigden
通讯作者:
D. J. Rigden
DOI:
10.1073/pnas.0401319101
发表时间:
2004
影响因子:
11.1
作者:
Sutak,Robert;Dolezal,Pavel;Fiumera,HeatherL;Hrdy,Ivan;Dancis,Andrew;Delgadillo-Correa,Maria;Johnson,PatriciaJ;Muller,Miklos;Tachezy,Jan
通讯作者:
Tachezy,Jan
影响因子:
1.5
作者:
Mertens,E;VanSchaftingen,E;Müller,M
通讯作者:
Müller,M