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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1111/nph.12821
|2 doi
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|a pubmed24n1223.xml
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|a (NLM)24749484
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Simpson, Craig G
|e verfasserin
|4 aut
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|a Arabidopsis PTB1 and PTB2 proteins negatively regulate splicing of a mini-exon splicing reporter and affect alternative splicing of endogenous genes differentially
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 14.05.2015
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|a Date Revised 13.12.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2014 Crown copyright. Published with the permission of the Controller of HMSO and the Queen's Printer for Scotland New Phytologist © 2014 New Phytologist Trust.
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|a This paper examines the function of Arabidopsis thaliana AtPTB1 and AtPTB2 as plant splicing factors. The effect on splicing of overexpression of AtPTB1 and AtPTB2 was analysed in an in vivo protoplast transient expression system with a novel mini-exon splicing reporter. A range of mutations in pyrimidine-rich sequences were compared with and without AtPTB and NpU2AF65 overexpression. Splicing analyses of constructs in protoplasts and RNA from overexpression lines used high-resolution reverse transcription polymerase chain reaction (RT-PCR). AtPTB1 and AtPTB2 reduced inclusion/splicing of the potato invertase mini-exon splicing reporter, indicating that these proteins can repress plant intron splicing. Mutation of the polypyrimidine tract and closely associated Cytosine and Uracil-rich (CU-rich) sequences, upstream of the mini-exon, altered repression by AtPTB1 and AtPTB2. Coexpression of a plant orthologue of U2AF65 alleviated the splicing repression of AtPTB1. Mutation of a second CU-rich upstream of the mini-exon 3' splice site led to a decline in mini-exon splicing, indicating the presence of a splicing enhancer sequence. Finally, RT-PCR of AtPTB overexpression lines with c. 90 known alternative splicing (AS) events showed that AtPTBs significantly altered AS of over half the events. AtPTB1 and AtPTB2 are splicing factors that influence alternative splicing. This occurs in the potato invertase mini-exon via the polypyrimidine tract and associated pyrimidine-rich sequence
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a alternative splicing
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|a mini-exons
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|a splicing enhancers
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|a splicing regulation
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|a splicing repressors
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|a Arabidopsis Proteins
|2 NLM
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|a Nuclear Proteins
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|a RNA-Binding Proteins
|2 NLM
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|a Ribonucleoproteins
|2 NLM
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|a Splicing Factor U2AF
|2 NLM
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|a beta-Fructofuranosidase
|2 NLM
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|a EC 3.2.1.26
|2 NLM
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|a Carbohydrate Epimerases
|2 NLM
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|a EC 5.1.3.-
|2 NLM
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|a ribulosephosphate 3-epimerase
|2 NLM
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|a EC 5.1.3.1
|2 NLM
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|a Lewandowska, Dominika
|e verfasserin
|4 aut
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|a Liney, Michele
|e verfasserin
|4 aut
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|a Davidson, Diane
|e verfasserin
|4 aut
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|a Chapman, Sean
|e verfasserin
|4 aut
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|a Fuller, John
|e verfasserin
|4 aut
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|a McNicol, Jim
|e verfasserin
|4 aut
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|a Shaw, Paul
|e verfasserin
|4 aut
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|a Brown, John W S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 203(2014), 2 vom: 16. Juli, Seite 424-436
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:203
|g year:2014
|g number:2
|g day:16
|g month:07
|g pages:424-436
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|u http://dx.doi.org/10.1111/nph.12821
|3 Volltext
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|d 203
|j 2014
|e 2
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|c 07
|h 424-436
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