The open reading frame 2 product of cacao swollen shoot badnavirus is a nucleic acid-binding protein.
The function of the open reading frame 2 product (p2) of cacao swollen shoot virus (CSSV) and of other badnaviruses is not yet determined. Their carboxyl-termini are lysine and proline rich and also contain alanine residues, amino acids present at the C-termini of histone-like proteins. Full-length CSSV p2 (132 amino acids) or versions truncated at the C-terminus (128, 113, 103, or 101 amino acids) were expressed in Escherichia coli and partially purified. When assayed in nucleic acid-binding tests, p2 was able to interact with CSSV and other double-stranded DNAs and with CSSV and other single-stranded RNA transcripts in sequence-nonspecific manner. Moreover, this binding activity was progressively lost as the C-terminus was gradually deleted.
Jacquot
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Institut de Biologie Moléculaire des Plantes, Centre National de la Recherche Scientifique, Université Louis Pasteur, Strasbourg, France.
Hagen
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LS
Jacquemond
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M
Yot
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P
D000595:Amino Acid Sequence; D019195:Badnavirus / Q000235:genetics*; D002099:Cacao / Q000821:virology; D004279:DNA, Viral / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D008969:Molecular Sequence Data; D008970:Molecular Weight; D016366:Open Reading Frames / Q000502:physiology*; D012367:RNA, Viral / Q000378:metabolism; D016601:RNA-Binding Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*; D017384:Sequence Deletion; D014764:Viral Proteins / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism*
D004279:DNA, Viral; D004268:DNA-Binding Proteins; D012367:RNA, Viral; D016601:RNA-Binding Proteins; D014764:Viral Proteins