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The majority of the genes for U1 RNA are organized in tandemly repeated units in the sea urchin. To assess the level of expression of these genes in the sea urchin Lytechinus variegatus, we measured the transcription of sequences 3'' to the gene. The tandemly repeated U1 genes are expressed in morula and continue to be expressed at high rates until 2 hr after hatching, at which time the rate of expression of all the U1 genes and the tandemly repeated U1 genes declines sharply. By the gastrula stage the synthesis of total U1 RNA has declined by a factor of 8. The major tandemly repeated genes are inactive by this time, although other U1 genes remain active. The sequence of U1 RNA synthesized late in embryonic development differs from the sequence of U1 RNA encoded by the tandemly repeated set of U1 RNA genes, indicating that there must be other U1 RNA genes that are active late in embryonic development.
Benecke,
The control of mRNA production, translation and turnover in suspended and reattached anchorage-dependent fibroblasts.
1978, Pubmed
Benecke,
The control of mRNA production, translation and turnover in suspended and reattached anchorage-dependent fibroblasts.
1978,
Pubmed
Brandhorst,
Synthesis and decay rates of major classes of deoxyribonucleic acid a5brandhorst BP, Humphreys T: Synthesis and decay rates of major classes of deoxyribonucleic acid-like ribonucleic acid in sea urchin embryos.
1971,
Pubmed
,
Echinobase
Brown,
Structure of the sea urchin U1 RNA repeat.
1985,
Pubmed
,
Echinobase
Card,
Sea urchin small nuclear RNA genes are organized in distinct tandemly repeating units.
1982,
Pubmed
,
Echinobase
Chodchoy,
Expression of mouse histone genes: transcription into 3' intergenic DNA and cryptic processing sites downstream from the 3' end of the H3 gene.
1987,
Pubmed
Forbes,
Small nuclear RNA transcription and ribonucleoprotein assembly in early Xenopus development.
1983,
Pubmed
Forbes,
Differential expression of multiple U1 small nuclear RNAs in oocytes and embryos of Xenopus laevis.
1984,
Pubmed
Hieter,
Histone gene switch in the sea urchin embryo. Identification of late embryonic histone messenger ribonucleic acids and the control of their synthesis.
1979,
Pubmed
,
Echinobase
Kaumeyer,
Sequence, organization and expression of late embryonic H3 and H4 histone genes from the sea urchin, Strongylocentrotus purpuratus.
1986,
Pubmed
,
Echinobase
Knowles,
Temporal expression of late histone messenger RNA in the sea urchin Lytechinus pictus.
1984,
Pubmed
,
Echinobase
Lee,
Activation of sea urchin actin genes during embryogenesis. Measurement of transcript accumulation from five different genes in Strongylocentrotus purpuratus.
1986,
Pubmed
,
Echinobase
Levine,
Differential expression of individual members of the histone multigene family due to sequences in the 5' and 3' regions of the genes.
1988,
Pubmed
Lobo,
Synthesis of U1 RNA in isolated mouse cell nuclei: initiation and 3'-end formation.
1987,
Pubmed
Lobo,
Localization and expression of U1 RNA in early mouse embryo development.
1988,
Pubmed
Lu,
Cloning and organization of genes for 5S ribosomal RNA in the sea urchin. Lytechinus variegatus.
1981,
Pubmed
,
Echinobase
Lund,
Differential control of U1 small nuclear RNA expression during mouse development.
1985,
Pubmed
Lund,
The two embryonic U1 small nuclear RNAs of Xenopus laevis are encoded by a major family of tandemly repeated genes.
1984,
Pubmed
Lund,
Differential accumulation of U1 and U4 small nuclear RNAs during Xenopus development.
1987,
Pubmed
Maniatis,
The role of small nuclear ribonucleoprotein particles in pre-mRNA splicing.
1987,
Pubmed
Maxson,
Accumulation of the early histone messenger RNAs during the development of Strongylocentrotus purpuratus.
1982,
Pubmed
,
Echinobase
Morris,
Synthesis of U1 RNA in a DNA-dependent system from sea urchin embryos.
1986,
Pubmed
,
Echinobase
Morris,
A factor in sea urchin eggs inhibits transcription in isolated nuclei by sea urchin RNA polymerase III.
1983,
Pubmed
,
Echinobase
Morris,
Synthesis of U1 RNA in isolated nuclei from sea urchin embryos: U1 RNA is initiated at the first nucleotide of the RNA.
1985,
Pubmed
,
Echinobase
Nash,
Sea urchin maternal and embryonic U1 RNAs are spatially segregated in early embryos.
1987,
Pubmed
,
Echinobase
Nash,
Structure of an unusual sea urchin U1 RNA gene cluster.
1988,
Pubmed
,
Echinobase
Nijhawan,
Metabolism of low molecular weight ribonucleic acids in early sea urchin embryos.
1979,
Pubmed
,
Echinobase
Rowland,
Atypical changes in chromatin structure during development in the sea urchin, Lytechinus variegatus.
1987,
Pubmed
,
Echinobase
Weinberg,
Timing and rates of synthesis of early histone mRNA in the embryo of Strongylocentrotus purpuratus.
1983,
Pubmed
,
Echinobase
Yu,
Structure and expression of a second sea urchin U1 RNA gene repeat.
1986,
Pubmed
,
Echinobase
Zeller,
Xenopus laevis U1 snRNA genes: characterisation of transcriptionally active genes reveals major and minor repeated gene families.
1984,
Pubmed
