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PKB-number: PKB104
Definition: Pseudoknot PK2 of the upstream pseudoknot domain (UPD1) of satellite tobacco mosaic virus
Organism: satellite tobacco mosaic virus
Abbreviation: STMV_UPD1-PK2
RNA type: Viral 3 UTR
Keywords: tobamovirus; satellite virus; translational regulation
EMBL number: M25782
Submitted by: A.P.Gultyaev (
Supported by: Sequence comparison
References: [1] Leathers V. et al. (1993). Mol. Cell. Biol. 13:5331-5347.
[2] Gultyaev A.P. et al. (1994). J. Gen. Virol. 75:2851-2856.
[3] Felden B. et al. (1994). Nucleic Acids Res. 22:2882-2886.
Comment: The relatively long 3'-UTR of STMV RNA is predicted to have two upstream pseudoknot domains (UPD). The UPD1 is located just upstream of the 3'-terminal tRNA-like structure, similar to structures in helper viruses [1-3], the UPD2 is in the 5'-proximal part of the 3'-UTR [2].
Stem sizes:
Loop sizes:
3 6
1 1 4
Position Paired:
896-898; 907-909
900-905; 914-919
Bracket view of structure:
              900       910       920
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     % 895 :(((:[[[[[[:)))::::]]]]]]:

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