@article{Hardin:2015:nar/gkv1011,
author = {Hardin, JW and Warnasooriya, C and Kondo, Y and Nagai, K and Rueda, DS},
doi = {nar/gkv1011},
journal = {Nucleic Acids Research},
pages = {10963--10974},
title = {Assembly and dynamics of the U4/U6 di-snRNP by single-molecule FRET},
url = {http://dx.doi.org/10.1093/nar/gkv1011},
volume = {43},
year = {2015}
}

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TY  - JOUR
AB  - In large ribonucleoprotein machines, such as ribosomes and spliceosomes, RNA functions as an assembly scaffold as well as a critical catalytic component. Protein binding to the RNA scaffold can induce structural changes, which in turn modulate subsequent binding of other components. The spliceosomal U4/U6 di-snRNP contains extensively base paired U4 and U6 snRNAs, Snu13, Prp31, Prp3 and Prp4, seven Sm and seven LSm proteins. We have studied successive binding of all protein components to the snRNA duplex during di-snRNP assembly by electrophoretic mobility shift assay and accompanying conformational changes in the U4/U6 RNA 3-way junction by single-molecule FRET. Stems I and II of the duplex were found to co-axially stack in free RNA and function as a rigid scaffold during the entire assembly, but the U4 snRNA 5′ stem-loop adopts alternative orientations each stabilized by Prp31 and Prp3/4 binding accounting for altered Prp3/4 binding affinities in presence of Prp31.
AU  - Hardin,JW
AU  - Warnasooriya,C
AU  - Kondo,Y
AU  - Nagai,K
AU  - Rueda,DS
DO  - nar/gkv1011
EP  - 10974
PY  - 2015///
SN  - 1362-4962
SP  - 10963
TI  - Assembly and dynamics of the U4/U6 di-snRNP by single-molecule FRET
T2  - Nucleic Acids Research
UR  - http://dx.doi.org/10.1093/nar/gkv1011
UR  - https://academic.oup.com/nar/article/43/22/10963/1803237
VL  - 43
ER  - 

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