Abstract:
:Although 29 tRNA genes have been deduced from the complete nucleotide sequence of the mitochondrial genome from the liverwort Marchantia polymorpha, a tRNAIle gene decoding AUU and AUC codons is conspicuously absent. In order to address the question of the possible involvement of nuclear-encoded tRNA, we isolated and identified three variant copies of the nuclear-encoded tRNAIle(AAU) gene from the liverwort. Northern analysis showed the presence of nuclear-encoded tRNAIle both in the mitochondrion and the cytosol, while both chloroplast DNA-encoded tRNAIle and nuclear-encoded tRNATyr were absent in liverwort mitochondria. These results unequivocally establish that import of nuclear tRNAIle into mitochondria indeed occurs in one of the most primitive plants, M. polymorpha.
journal_name
Curr Genetjournal_title
Current geneticsauthors
Akashi K,Sakurai K,Hirayama J,Fukuzawa H,Ohyama Kdoi
10.1007/s002940050118subject
Has Abstractpub_date
1996-07-31 00:00:00pages
181-5issue
2eissn
0172-8083issn
1432-0983journal_volume
30pub_type
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