Abstract
A model of rearrangement of 32S pre-rRNA during processing was proposed. The first step of these events is the cotranscriptional interaction of the 3′-half of 5.8S rRNA and adjacent part of the internal transcribed spacer (ITS-2) with the 3′-part of the small nucleolar U3RNA from its 155th to 215th nucleotides (numbered for a rat U3RNA). This interaction prevents formation of intramolecular double-stranded structure between 5′-and 3′-end sequences of 5.8S rRNA. The second step is the appearance of extended hairpin structures in the ITS-2, which leads to a compactisation of the entire 32S-pre-rRNA molecule and to the complex formation between 5.8S rRNA and 28S rRNA sequences as the result of U3RNA displacing. After elimination of ITS-2 sequences from 32S pre-rRNA this complex can be included into ribosomes.
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References
BachellerieJ-P, MichotB & RaynalF (1983) Mol. Biol. Rep. 9: 79–86
BowmanLH, RabinB & SchlessingerD (1981) Nucl. Acid Res. 9: 4951–4966
EpsteinP, ReddyR & BuschH (1984) Biochemistry 23: 5421–5425
CrouchRJ, KanayaS & EarlPL (1983) Mol. Biol. Rep. 9: 75–78
HadjiolovA (1985) In: The Nucleolus and Ribosome Biogenesis (pp 268–311) Springer Verlag Wien, New York
HallLMC & MadenBEH (1980) Nucl. Acid. Res. 8: 5993–6003
KelleyJM & MadenBEH (1980) Nucl. Acid. Res. 8: 4521–4534
KupriyanovaNS & TimofeevaMYa (1987) Molecularnaya Biologiya 21: 1000–1009
MazinAL (1983) Molecularnaya Biologiya 17: 755–783
MichotB, BachellerieJP & RaynalF (1983) Nucl. Acid Res. 11: 3375–3391
NazarRN, SitzThO & BuschH (1975) J. Biol. Chem. 250: 8591–8597
PerryRP (1976) Ann. Rev. Biochem. 45: 605–629
PrestaykoAW, TonatoM & BuschH (1970) J. Mol. Biol. 47: 505–525
SubrahmanyamChS, CassidyB, BuschH & RothblumL (1982) Nucl. Acid Res. 10: 3667–3678
VaughJC & SperbeckSJ (1984) Nucl. Acid Red. 12: 7479–7502
ReddyR, HennigD & BuschH (1980) J. Biol. Chem. 255: 7029–7033
TagueBW & GerbiSA (1984) J. Mol. Evolution 20: 362–367
ParkerKA & SteitzJA (1987) Mol. Cell. Biol. 7: 2899–2913
ErdmannVA, WoltersJ, HuysmansE & DeWachterR (1985) Nucl. Acid Res. 13 suppl.: r105-r154
HughesJMX, KoningsDAM & CesareniG (1987) EMBO J. 6: 2145–2155
TinokoJ, BorerPN, DenglerB, SevineH, UhlenbeckOC, CrotersDM & GrallaJ (1973) Nature New Biol. 246: 40–41
NazarRN, SitzThO & BuschH (1975) J. Biol. Chem. 250: 8591–8597
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Kupriyanova, N.S., Timofeeva, M.Y. 32S pre-rRNA processing: a dynamic model for interaction with U3RNA and structural rearrangements of spacer regions. Mol Biol Rep 13, 91–96 (1988). https://doi.org/10.1007/BF00539056
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DOI: https://doi.org/10.1007/BF00539056