Analysis of terminal structures of RNA from potato virus X.

نویسندگان

  • N Sonenberg
  • A J Shatkin
  • R P Ricciardi
  • M Rubin
  • R M Goodman
چکیده

The 5'-end structure of potato virus X RNA was determined following enzymatic methylation in vitro. A single 3H-methyl group was introduced into the 2'-position of the 5'-penultimate residue and the end structure was determined as m7GpppG(m)pAp(Xp)3G. This part of the RNA apparently is involved in binding to ribosomes since it can be partially protected against RNase digestion by wheat germ 40S ribosomes. PVX RNA was not retained by poly(U)-sepharose, indicating that it does not contain a 3'-terminal poly(A) tract.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Induction of Resistance to Potato Virus Y (PVY) Using Hairpin Construct of Coat Protein

Potato virus Y (PVY) is one of the most damaging viruses of potato plants which infecting most cultivars and causing significant yield and economical losses. The application of the concept of pathogen derived resistance opened new horizons for the development of virus-resistant plants. This research was carried out to study RNA silencing to engineered potato plants that are resistant to potato ...

متن کامل

Stem-loop structure in the 5' region of potato virus X genome required for plus-strand RNA accumulation.

Computer-generated thermodynamic predictions and solution structure probing indicated two stem-loop structures, stem-loop 1 (SL1; nt 32-106) and stem-loop 2 (SL2; nt 143-183), within the 5' 230 nt of potato virus X (PVX) RNA. Because the existence of SL1 was further supported by covariation analysis of several PVX strains, the functional significance of this structure was investigated by site-d...

متن کامل

Transient expression of coding and non-coding regions of PVY confer resistance to virus infection

One of the most efficient mechanisms by which plants protect themselves from invading virusesis the specific RNA-dependent silencing pathway termed post-transcriptional gene silencing(PTGS). In this mechanism, resistance to a virus is engineered through the expression of asegment of the virus genomein transgenic plants. Potato VirusY (PVY) is one of the mostdamaging viruses of potato, infecting...

متن کامل

Evolutionary features of 8K (KDa) silencing suppressor protein of Potato mop-top virus

The cysteine-rich 8K protein of Potato mop-top virus (PMTV) suppresses host RNA silencing. In this study, evolutionary analysisof 8K sequences of PMTV isolates was studied on the basis of nucleotide and amino acid sequences. Twenty-one positively selected sites were identified in 8K codingregions. Recombination events were found in the 8K of PMTV isolates with a rate of 1.8. Totally 30 haplotyp...

متن کامل

The 5'-terminal sequence of potato leafroll virus RNA: evidence of recombination between virus and host RNA.

The discrepancy between published sequences of the 5' non-coding regions of RNA of a Scottish (S) and that of Dutch (D), Australian and Canadian isolates of potato leafroll virus (PLRV) was investigated. Reverse transcription followed by amplification by polymerase chain reaction showed that RNA from three distinct Scottish isolates of PLRV contained molecules with 5' ends like that of the orig...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Nucleic acids research

دوره 5 7  شماره 

صفحات  -

تاریخ انتشار 1978