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Analysis of a piwi-Related Gene Implicates Small RNAs in Genome Rearrangement in Tetrahymena
During development of the somatic macronucleus from the germline micronucleus in ciliates, chromosome rearrangements occur in which specific regions of DNA are eliminated and flanking regions areExpand
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Universal occurrence of the vasa-related genes among metazoans and their germline expression in Hydra
Abstract. The vasa (vas)-related genes are members of the DEAD box protein family and are involved in germ cell formation in higher metazoans. In the present study, we cloned the vas-related genes asExpand
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A Dicer-like protein in Tetrahymena has distinct functions in genome rearrangement, chromosome segregation, and meiotic prophase.
Previous studies indicated that genome rearrangement involving DNA sequence elimination that occurs at late stages of conjugation in Tetrahymena is epigenetically controlled by siRNA-like scan (scn)Expand
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Histone H3 lysine 9 methylation is required for DNA elimination in developing macronuclei in Tetrahymena.
Genome-wide DNA elimination accompanies development of the somatic macronucleus from the germ-line micronucleus during the sexual process of conjugation in the ciliated protozoan TetrahymenaExpand
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Expression and evolutionary conservation of nanos-related genes in Hydra
Abstract The Drosophila gene nanos encodes two particular zinc finger motifs which are also found in germline-associated factors from nematodes to vertebrates. We cloned two nanos (nos)-relatedExpand
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A Domesticated piggyBac Transposase Plays Key Roles in Heterochromatin Dynamics and DNA Cleavage during Programmed DNA Deletion in Tetrahymena thermophila
This study suggests that a TPB2 piggyBac transposase has evolved to facilitate heterochromatin assembly and carry out the final DNA excision step of programmed DNA deletion in TetrahymenaExpand
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Small RNAs in genome rearrangement in Tetrahymena.
Small RNAs produced by an RNAi-related mechanism are involved in DNA elimination during development of the somatic macronucleus from the germline micronucleus in Tetrahymena. The properties of theseExpand
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Conjugation-specific small RNAs in Tetrahymena have predicted properties of scan (scn) RNAs involved in genome rearrangement.
We proposed a scan-RNA model for genome rearrangement based on finding small RNAs that hybridized preferentially to micronuclear-specific sequences and on the properties of Twi1p, a PPD proteinExpand
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Study of an RNA helicase implicates small RNA-noncoding RNA interactions in programmed DNA elimination in Tetrahymena.
Tetrahymena eliminates micronuclear-limited sequences from the developing macronucleus during sexual reproduction. Homology between the sequences to be eliminated and approximately 28-nucleotideExpand
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Structure of the germline genome of Tetrahymena thermophila and relationship to the massively rearranged somatic genome
The germline genome of the binucleated ciliate Tetrahymena thermophila undergoes programmed chromosome breakage and massive DNA elimination to generate the somatic genome. Here, we present a completeExpand
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