Abstract:
:TSEN54 encodes a subunit of the tRNA-splicing endonuclease complex, which catalyzes the identification and cleavage of introns from precursor tRNAs. Previously, we identified an AluSx-derived alternative transcript in TSEN54 of cynomolgus monkey. Reverse transcription-polymerase chain reaction (RT-PCR) amplification and TSEN54 sequence analysis of primate and human samples identified five novel alternative transcripts, including the AluSx exonized transcript. Additionally, we performed comparative expression analysis via RT-qPCR in various cynomolgus, rhesus monkey, and human tissues. RT-qPCR amplification revealed differential expression patterns. Furthermore, genomic PCR amplification and sequencing of primate and human DNA samples revealed that AluSx elements were integrated in human and all of the primate samples tested. Intriguingly, in langur genomic DNA, an additional AluY element was inserted into AluSx of intron eight of TSEN54. The new AluY element showed polymorphic insertion. Using standardized nomenclature for Alu repeats, the polymorphic AluY of the langur TSEN54 was designated as being of the AluYl17 subfamily. Our results suggest that integration of the AluSx element in TSEN54 contributed to diversity in transcripts and induced lineage- or species-specific evolutionary events such as alternative splicing and polymorphic insertion during primate evolution.
journal_name
Int J Genomicsjournal_title
International journal of genomicsauthors
Lee JR,Kim YH,Park SJ,Choe SH,Cho HM,Lee SR,Kim SU,Kim JS,Sim BW,Song BS,Jeong KJ,Lee Y,Jin YB,Kang P,Huh JW,Chang KTdoi
10.1155/2016/1679574subject
Has Abstractpub_date
2016-01-01 00:00:00pages
1679574eissn
2314-436Xissn
2314-4378journal_volume
2016pub_type
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