CAPPED NONVIRAL SEQUENCES AT THE 5'-END OF THE MESSENGER-RNAS OF RICE-HOJA-BLANCA-VIRUS RNA4

被引:25
作者
RAMIREZ, BC
GARCIN, D
CALVERT, LA
KOLAKOFSKY, D
HAENNI, AL
机构
[1] UNIV GENEVA, SCH MED, DEPT MICROBIOL, CH-1205 GENEVA, SWITZERLAND
[2] CTR INT AGR TROP, CALI 6713 AA, COLOMBIA
关键词
D O I
10.1128/JVI.69.3.1951-1954.1995
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Subgenomic RNAs of both polarities corresponding to rice hoja blanca virus (RHBV) ambisense RNA4 were detected in RHBV-infected rice tissues. Total RNA extracted from RHBV-infected and noninfected rice tissues and RNA4 purified from RHBV ribonucleoprotein particles were used as templates for primer extension studies. The RNAs extracted from RHBV-infected tissues contain a population of RNA molecules with 10 to 17 nonviral nucleotides at their 5' end. The RNA-cDNA hybrids resulting from primer extension of such RNA molecules were specifically immunoselected with anti-cap antibodies, indicating that the subgenomic RNAs are capped and probably serve as mRNAs and that the additional nucleotides at their 5' end possibly derive from host mRNAs via a cap-snatching mechanism.
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收藏
页码:1951 / 1954
页数:4
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