Caenorhabditis elegans
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA135673 | ENA |
REPOSITORIES: ENA
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Project description:The Cell Division Cycle and Apoptosis Regulator (CCAR) protein family members have recently emerged as regulators of alternative splicing and transcription, as well as having other key physiological functions. For example, mammalian CCAR2/DBC1 forms a complex with the zinc factor protein ZNF326 to integrate alternative splicing with RNA polymerase II transcriptional elongation in AT-rich regions of the DNA. Additionally, Caenorhabditis elegans CCAR-1, a homolog to mammalian CCAR2, facilitates the alternative splicing of the perlecan unc-52 gene. However, much about the CCAR family's role in alternative splicing is unknown. We are interested in uncovering the role of the CCAR family in alternative splicing in vivo using Caenorhabditis elegans. We examined the role of CCAR-1 in genome-wide alternative splicing and identified new alternative splicing targets of CCAR-1 using RNA sequencing. Also, we found that CCAR-1 interacts with the spliceosome factors UAF-1 and UAF-2 using mass spectrometry, and that knockdown of ccar-1 affects alternative splicing patterns, motility, and proteostasis of UAF-1 mutant worms. Collectively, we demonstrate a role for CCAR-1 in the regulation of global alternative splicing in C. elegans and in conjunction with UAF-1
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Project description:The conserved ubiquitin-like protein Hub1/UBL-5 associates with proteins non-covalently. In yeast and human cells, Hub1 promotes splicing of precursor mRNAs with weak introns and alternative splicing, however, its splicing function has remained elusive in multicellular organisms. We demonstrate the splicing function of Hub1/UBL-5 in the free-living nematode Caenorhabditis elegans. UBL-5 binds to the HIND-containing splicing factors Snu66/SART-1 and PRP-38 and associates with other spliceosomal proteins. Caenorhabditis elegans hub1/ubl-5 mutants die at the larval L3 stage, and show accumulation of intron- and outron-containing transcripts. The latter observation adds to UBL-5’s splicing function in trans-RNA splicing. UBL-5 complements splicing defects of hub1-knockout Schizosaccharomyces pombe, confirming its functional conservation. Thus, UBL-5 is important for C. elegans development and cis- and trans-RNA splicing.
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Project description:Yilmaz2016 - Genome scale metabolic model -
Caenorhabditis elegans (iCEL1273)
This model is described in the article:
A Caenorhabditis elegans
Genome-Scale Metabolic Network Model.
Yilmaz LS, Walhout AJ.
Cell Syst 2016 May; 2(5): 297-311
Abstract:
Caenorhabditis elegans is a powerful model to study
metabolism and how it relates to nutrition, gene expression,
and life history traits. However, while numerous experimental
techniques that enable perturbation of its diet and gene
function are available, a high-quality metabolic network model
has been lacking. Here, we reconstruct an initial version of
the C. elegans metabolic network. This network model
contains 1,273 genes, 623 enzymes, and 1,985 metabolic
reactions and is referred to as iCEL1273. Using flux balance
analysis, we show that iCEL1273 is capable of representing the
conversion of bacterial biomass into C. elegans biomass
during growth and enables the predictions of gene essentiality
and other phenotypes. In addition, we demonstrate that gene
expression data can be integrated with the model by comparing
metabolic rewiring in dauer animals versus growing larvae.
iCEL1273 is available at a dedicated website
(wormflux.umassmed.edu) and will enable the unraveling of the
mechanisms by which different macro- and micronutrients
contribute to the animal's physiology.
This model is hosted on
BioModels Database
and identified by:
MODEL1604210000.
To cite BioModels Database, please use:
BioModels Database:
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To the extent possible under law, all copyright and related or
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2016-11-03 | MODEL1604210000 | BioModels
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