Results 11 to 20 of about 11,640 (148)

Malleable ribonucleoprotein machine: protein intrinsic disorder in the Saccharomyces cerevisiae spliceosome [PDF]

open access: yesPeerJ, 2013
Recent studies revealed that a significant fraction of any given proteome is presented by proteins that do not have unique 3D structures as a whole or in significant parts.
Maria de Lourdes Coelho Ribeiro   +9 more
doaj   +2 more sources

Purification of the yeast U4/U6⋅U5 small nuclear ribonucleoprotein particle and identification of its proteins [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
The yeast U4/U6⋅U5 pre-mRNA splicing small nuclear ribonucleoprotein (snRNP) is a 25S small nuclear ribonucleoprotein particle similar in size, composition, and morphology to its counterpart in human cells. The yeast U4/U6⋅U5 snRNP complex has been purified to near homogeneity by affinity chromatography and preparative glycerol gradient sedimentation ...
Stevens, Scott W., Abelson, John
openaire   +3 more sources

Identification of a 35S U4/U6.U5 tri-small nuclear ribonucleoprotein (tri-snRNP) complex intermediate in spliceosome assembly [PDF]

open access: yesJournal of Biological Chemistry, 2017
The de novo assembly and post-splicing reassembly of the U4/U6.U5 tri-snRNP remain to be investigated. We report here that ZIP, a protein containing a CCCH-type zinc finger and a G-patch domain, as characterized by us previously, regulates pre-mRNA splicing independent of RNA binding.
Zhe, Chen   +14 more
openaire   +2 more sources

The 5' splice site consensus RNA oligonucleotide induces assembly of U2/U4/U5/U6 small nuclear ribonucleoprotein complexes. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1992
A short RNA oligonucleotide comprising the 5' splice site consensus sequence (5'SS RNA oligo) efficiently inhibits splicing of mRNA precursors in HeLa cell nuclear extracts. Addition of 5'SS RNA oligo inhibits early, but not late, steps in the splicing reaction, affecting the process of spliceosome assembly. In the presence of 5'SS RNA oligo a majority
K B, Hall, M M, Konarska
openaire   +2 more sources

Structural basis for dual roles of Aar2p in U5 snRNP assembly [PDF]

open access: yes, 2013
Yeast U5 small nuclear ribonucleoprotein particle (snRNP) is assembled via a cytoplasmic precursor that contains the U5-specific Prp8 protein but lacks the U5-specific Brr2 helicase.
Beggs, J.D.   +8 more
core   +1 more source

Cloning and molecular characterization of Trypanosoma cruzi U2, U4, U5, and U6 small nuclear RNAs

open access: yesMemorias do Instituto Oswaldo Cruz, 2007
Small nuclear RNAs (snRNAs) are important factors in the functioning of eukaryotic cells that form several small complexes with proteins; these ribonucleoprotein particles (U snRNPs) have an essential role in the pre-mRNA processing, particularly in ...
DL Ambrósio, MTA Silva, RMB Cicarelli
doaj   +1 more source

PRP4: a protein of the yeast U4/U6 small nuclear ribonucleoprotein particle [PDF]

open access: yes, 1989
The Saccharomyces cerevisiae prp mutants (prp2 through prp11) are known to be defective in pre-mRNA splicing at nonpermissive temperatures. We have sequenced the PRP4 gene and shown that it encodes a 52-kilodalton protein.
Abelson, John N., Banroques, Josette
core   +1 more source

Anti-U5 Small Nuclear Ribonucleoprotein (snRNP) Antibodies: A Rare Anti-U snRNP Specificity

open access: yesClinical Immunology and Immunopathology, 1996
We surveyed for autoantibodies to the U small nuclear ribonucleoproteins (snRNPs) in sera from 1171 patients with various connective tissue diseases by immunoprecipitation assay. We found serum, termed LaJ, which principally recognized the U5 snRNP from one patient with systemic sclerosis-polymyositis overlap syndrome. Anti-LaJ serum immunoprecipitated
Y, Okano   +9 more
openaire   +2 more sources

A U5 Small Nuclear Ribonucleoprotein Particle Protein Involved Only in the Second Step of Pre-mRNA Splicing in Saccharomyces cerevisiae [PDF]

open access: yesMolecular and Cellular Biology, 1993
The PRP18 gene, which had been identified in a screen for pre-mRNA splicing mutants in Saccharomyces cerevisiae, has been cloned and sequenced. Yeast strains bearing only a disrupted copy of PRP18 are temperature sensitive for growth; even at a low temperature, they grow extremely slowly and do not splice pre-mRNA efficiently.
Horowitz, David S., Abelson, John
openaire   +3 more sources

Evidence for a nuclear compartment of transcription and splicing located at chromosome domain boundaries [PDF]

open access: yes, 1993
The nuclear topography of splicing snRNPs, mRNA transcripts and chromosome domains in various mammalian cell types are described. The visualization of splicing snRNPs, defined by the Sm antigen, and coiled bodies, revealed distinctly different ...
A Monneron   +64 more
core   +1 more source

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