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Temperature sensitivity of aberrant RNA splicing with a mutation in the G+5 position of intron 37 of the gene for type III procollagen from a patient with Ehlers-Danlos syndrome type IV. 1993

Y Wu, and H Kuivaniemi, and G Tromp, and D Strobel, and A M Romanic, and D J Prockop
Department of Biochemistry and Molecular Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.

A single-base mutation in intron 37 of the gene for type III procollagen (COL3A1) was found in a proband with the type IV variant of Ehlers-Danlos syndrome. Probe-protection experiments with S1 nuclease and RNA from fibroblasts incubated at 37 degrees C demonstrated that about 35% of the total mRNA or about 70% of the mRNA from mutated allele was spliced by exon skipping. The effects of the mutation were temperature-sensitive in that the amount of RNA from the mutated allele that was spliced by exon skipping was 87.1 +/- 7.7% at 31 degrees C, 70.1 +/- 6.5% at 37 degrees C, and 85.4 +/- 11.1% at 42 degrees C. The effects of temperature on aberrant RNA splicing were, therefore, the reverse of those reported for four previous mutants in collagen genes. The increase in abnormal RNA splicing when the temperature was raised from 31 degrees to 37 degrees C seen with previously reported mutants suggested that RNA-RNA hybridization of U1snRNA to the 5'-splice site in the substrate may be limiting in the processing of transcripts from the mutated alleles, since RNA-RNA hybridizations become less favorable at higher temperatures. The decrease in abnormal RNA splicing seen here when the temperature was raised from 31 degrees to 37 degrees C suggested that protein-RNA or protein-protein binding steps become rate limiting with the G+5 mutation in intron 37 of the COL3A1 gene.

UI MeSH Term Description Entries
D007438 Introns Sequences of DNA in the genes that are located between the EXONS. They are transcribed along with the exons but are removed from the primary gene transcript by RNA SPLICING to leave mature RNA. Some introns code for separate genes. Intervening Sequences,Sequences, Intervening,Intervening Sequence,Intron,Sequence, Intervening
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D010375 Pedigree The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition. Family Tree,Genealogical Tree,Genealogic Tree,Genetic Identity,Identity, Genetic,Family Trees,Genealogic Trees,Genealogical Trees,Genetic Identities,Identities, Genetic,Tree, Family,Tree, Genealogic,Tree, Genealogical,Trees, Family,Trees, Genealogic,Trees, Genealogical
D011347 Procollagen A biosynthetic precursor of collagen containing additional amino acid sequences at the amino-terminal and carboxyl-terminal ends of the polypeptide chains. Protocollagen,Procollagen Type M
D004247 DNA A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine). DNA, Double-Stranded,Deoxyribonucleic Acid,ds-DNA,DNA, Double Stranded,Double-Stranded DNA,ds DNA
D004252 DNA Mutational Analysis Biochemical identification of mutational changes in a nucleotide sequence. Mutational Analysis, DNA,Analysis, DNA Mutational,Analyses, DNA Mutational,DNA Mutational Analyses,Mutational Analyses, DNA
D004535 Ehlers-Danlos Syndrome A heterogeneous group of autosomally inherited COLLAGEN DISEASES caused by defects in the synthesis or structure of FIBRILLAR COLLAGEN. There are numerous subtypes: classical, hypermobility, vascular, and others. Common clinical features include hyperextensible skin and joints, skin fragility and reduced wound healing capability. Cutis Elastica,Ehlers Danlos Disease,Ehlers-Danlos Disease,Danlos Disease, Ehlers,Disease, Ehlers Danlos,Disease, Ehlers-Danlos,Ehlers Danlos Syndrome,Syndrome, Ehlers-Danlos

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