Computer search of transcription control sequences in small plant virus DNA reveals a sequence highly homologous to the enhancer element of histone promoters.
The positions of nucleotide sequences which can act as binding sites for plant transcriptional trans-acting protein factors have been mapped in DNA of plant circovirus--coconut foliar decay virus (CFDV). It was found that CFDV promoter region contains sequence motif homologous to the regulatory type I element of plant histone genes. We have also found the presence of the element I motifs in DNAs of other small plant viruses. Taking into account the mechanism of regulation of histone gene expression it appears that these sequences may play a role in a cell cycle-dependent regulation of plant virus DNA transcription and replication.
Morozov SYa
A. N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, Russia.
Merits
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A
Chernov
B K
BK
D001483:Base Sequence; D018136:Circoviridae / Q000235:genetics*; D003059:Cocos / Q000382:microbiology; D004279:DNA, Viral / Q000032:analysis; D016208:Databases, Factual; D004742:Enhancer Elements, Genetic / Q000235:genetics; D006657:Histones / Q000235:genetics*; D008969:Molecular Sequence Data; D010942:Plant Viruses / Q000235:genetics*; D010944:Plants / Q000235:genetics / Q000821:virology; D011401:Promoter Regions, Genetic; D012689:Sequence Homology, Nucleic Acid; D012984:Software; D014158:Transcription, Genetic
D004279:DNA, Viral; D006657:Histones