Expression of foot and mouth disease virus non-structural polypeptide 3ABC induces histone H3 cleavage in BHK21 cells. 2002

A V E Capozzo, and D J Burke, and J W Fox, and I E Bergmann, and J L La Torre, and P R Grigera
Centro de Virologia Animal (CEVAN-CONICET), Serrano 669, Ciudad de Buenos Aires, 1414 Capital Federa, Buenos Aires, Argentina.

Auto-processing of the non-structural polypeptide 3ABC of foot and mouth disease virus (FMDV) expressed in Escherichia coli-BL21-DE3 was prevented by mutating either four glutamic acid residues at the 3A/3B1, 3B1/2, 3B2/3 and 3B3/3C junctions (3ABCtet) or a single cysteine residue at position 383 within the 3C domain (3ABCm). Independent expression of 3ABC and 3ABCtet genes induced expression of chaperone DnaK and degradation of ribosomal S1 protein in E. coli. They also induced cleavage of nucleosomal histone H3 when transiently expressed in BHK21 cells. 3ABCtet, 3ABCm, 3AB and 3A proteins concentrated in the perinuclear region suggesting that peptide sequences within the 3A domain specify intracellular targeting of 3ABC in BHK-21 cells. We propose that 3ABC molecules localized in the nuclear periphery are a source of protease 3C activity and are responsible for histone H3 processing during FMDV infections.

UI MeSH Term Description Entries
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D003546 Cysteine Endopeptidases ENDOPEPTIDASES which have a cysteine involved in the catalytic process. This group of enzymes is inactivated by CYSTEINE PROTEINASE INHIBITORS such as CYSTATINS and SULFHYDRYL REAGENTS.
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D006224 Cricetinae A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS. Cricetus,Hamsters,Hamster
D006657 Histones Small chromosomal proteins (approx 12-20 kD) possessing an open, unfolded structure and attached to the DNA in cell nuclei by ionic linkages. Classification into the various types (designated histone I, histone II, etc.) is based on the relative amounts of arginine and lysine in each. Histone,Histone H1,Histone H1(s),Histone H2a,Histone H2b,Histone H3,Histone H3.3,Histone H4,Histone H5,Histone H7
D000086042 3C Viral Proteases A class of cysteine proteases which play an essential role in VIRUS REPLICATION. They cleave precursor viral POLYPROTEINS to produce functional proteins and enzymes. In addition, they cleave certain host cell proteins such as EUKARYOTIC INITIATION FACTOR-4G. 3C Proteases,3C Proteinases,3C-like Viral Proteases,3Cpro Proteinases,Proteases, 3C,Proteases, 3C-like Viral,Proteinases, 3C,Viral Proteases, 3C-like
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014764 Viral Proteins Proteins found in any species of virus. Gene Products, Viral,Viral Gene Products,Viral Gene Proteins,Viral Protein,Protein, Viral,Proteins, Viral
D017361 Viral Nonstructural Proteins Proteins encoded by a VIRAL GENOME that are not structural components of VIRUS PARTICLES. Some of these proteins may play roles within the infected cell during VIRUS REPLICATION or act in regulation of virus replication or VIRUS ASSEMBLY. Nonstructural Proteins, Viral,NS Proteins, Viral,Viral NS Proteins,Viral Non-Structural Proteins,Viral Nonstructural Protein,Viral Nonstructural Proteins NS1,Viral Nonstructural Proteins NS2,Nonstructural Protein, Viral,Viral Non Structural Proteins

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