Foster G D, Millar A W, Meehan B M, Mills P R
Department of Mycology and Plant Pathology, Queen's University of Belfast, U.K.
J Gen Virol. 1990 Aug;71 ( Pt 8):1877-80. doi: 10.1099/0022-1317-71-8-1877.
The sequence of 1390 nucleotides of the 3'-terminal region of Helenium virus S RNA was determined from cloned cDNA. This portion of the viral RNA contains two major open reading frames (ORFs) encoding proteins of Mr 32.9K and 12.6K. The 32.9K protein, which is similar in size to the capsid protein of the virus, shares marked homology with the coat proteins of potexviruses and two other carlaviruses. The ORF, corresponding to Mr 12.6K, nearest to the 3'-terminal poly(A) tail shows extensive similarity with the corresponding proteins of potato virus S and potato virus M. We propose that this protein may be involved in nucleic acid binding within infected cells.
从克隆的 cDNA 中确定了向日葵病毒 S RNA 3' 末端区域的 1390 个核苷酸序列。病毒 RNA 的这一部分包含两个主要的开放阅读框（ORF），分别编码分子量为 32.9K 和 12.6K 的蛋白质。32.9K 蛋白的大小与病毒的衣壳蛋白相似，与马铃薯 X 病毒和其他两种香石竹潜隐病毒的外壳蛋白具有明显的同源性。最靠近 3' 末端多聚（A）尾的对应于 12.6K 的 ORF 与马铃薯病毒 S 和马铃薯病毒 M 的相应蛋白具有广泛的相似性。我们推测该蛋白可能参与感染细胞内的核酸结合。
