Andrew K Cheung

Summary

Affiliation: Agricultural Research Service
Country: USA

Publications

  1. doi request reprint Diversity of viruses detected by deep sequencing in pigs from a common background
    Kelly M Lager
    Virus and Prion, Research Units, National Animal Disease Center, U S Department of Agriculture, Agricultural Research Service, Ames, IA, USA
    J Vet Diagn Invest 24:1177-9. 2012
  2. doi request reprint A divergent clade of circular single-stranded DNA viruses from pig feces
    Andrew K Cheung
    Virus and Prion Diseases, Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA, 50010, USA
    Arch Virol 158:2157-62. 2013
  3. doi request reprint Replicative intermediates of porcine circovirus in animal tissue cultured cells or in bacteria undergoing copy-release replication
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virology 434:38-42. 2012
  4. doi request reprint Porcine circovirus: transcription and DNA replication
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virus Res 164:46-53. 2012
  5. pmc Detection of a novel porcine parvovirus, PPV4, in Chinese swine herds
    Lv Huang
    Department of Swine Infectious Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
    Virol J 7:333. 2010
  6. doi request reprint Identification and molecular cloning of a novel porcine parvovirus
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, PO Box 70, Ames, IA 50010, USA
    Arch Virol 155:801-6. 2010
  7. doi request reprint The RNA profile of porcine parvovirus 4, a boca-like virus, is unique among the parvoviruses
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, P O Box 70, Ames, IA 50010, USA
    Arch Virol 156:2071-8. 2011
  8. doi request reprint Homologous recombination within the capsid gene of porcine circovirus type 2 subgroup viruses via natural co-infection
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, 2300 Dayton Ave, Ames, IA 50010, USA
    Arch Virol 154:531-4. 2009
  9. doi request reprint Identification of an amino acid domain encoded by the capsid gene of porcine circovirus type 2 that modulates intracellular viral protein distribution during replication
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virus Res 155:358-62. 2011
  10. ncbi request reprint Mutational analysis of the direct tandem repeat sequences at the origin of DNA replication of porcine circovirus type 1
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virology 339:192-9. 2005

Collaborators

Detail Information

Publications21

  1. doi request reprint Diversity of viruses detected by deep sequencing in pigs from a common background
    Kelly M Lager
    Virus and Prion, Research Units, National Animal Disease Center, U S Department of Agriculture, Agricultural Research Service, Ames, IA, USA
    J Vet Diagn Invest 24:1177-9. 2012
    ..However, pyrosequencing also demonstrated the diversity of viruses within a group of animals and how that can confound experimental design and obscure a definitive diagnosis...
  2. doi request reprint A divergent clade of circular single-stranded DNA viruses from pig feces
    Andrew K Cheung
    Virus and Prion Diseases, Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA, 50010, USA
    Arch Virol 158:2157-62. 2013
    ..Furthermore, these viruses also exhibit three additional overlapping open reading frames in the large intergenic region between the capsid and replication initiator protein genes. ..
  3. doi request reprint Replicative intermediates of porcine circovirus in animal tissue cultured cells or in bacteria undergoing copy-release replication
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virology 434:38-42. 2012
    ..However, replicative intermediates indicative of RCR were not detected...
  4. doi request reprint Porcine circovirus: transcription and DNA replication
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virus Res 164:46-53. 2012
    ....
  5. pmc Detection of a novel porcine parvovirus, PPV4, in Chinese swine herds
    Lv Huang
    Department of Swine Infectious Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
    Virol J 7:333. 2010
    ..However, the PPV4 ORF3 encoded protein shares minimal amino acid identity with the ORF3 encoded proteins of the Bocavirus genus...
  6. doi request reprint Identification and molecular cloning of a novel porcine parvovirus
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, PO Box 70, Ames, IA 50010, USA
    Arch Virol 155:801-6. 2010
    ..Whereas the ORF3-encoded proteins of bocaviruses share significant similarity with each other, the PPV4 ORF3 encoded protein does not exhibit homology with any protein in the GenBank non-redundant database...
  7. doi request reprint The RNA profile of porcine parvovirus 4, a boca-like virus, is unique among the parvoviruses
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, P O Box 70, Ames, IA 50010, USA
    Arch Virol 156:2071-8. 2011
    ..While ORF3 of PPV4 encodes two NP proteins, ORF3 of bocavirus codes for only one NP polypeptide. Taken together, PPV4 is unique among the parvoviruses...
  8. doi request reprint Homologous recombination within the capsid gene of porcine circovirus type 2 subgroup viruses via natural co-infection
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, 2300 Dayton Ave, Ames, IA 50010, USA
    Arch Virol 154:531-4. 2009
    ....
  9. doi request reprint Identification of an amino acid domain encoded by the capsid gene of porcine circovirus type 2 that modulates intracellular viral protein distribution during replication
    Andrew K Cheung
    Virus and Prion Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virus Res 155:358-62. 2011
    ..In addition, viruses containing motif-2b replicated better than viruses containing motif-2a in porcine kidney cells...
  10. ncbi request reprint Mutational analysis of the direct tandem repeat sequences at the origin of DNA replication of porcine circovirus type 1
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virology 339:192-9. 2005
    ..Viral genome with mutations engineered into both H1/H2 and H3/H4 underwent extensive nucleotide reorganization to yield progeny viruses containing either H3/H4, h-like/H4, or h-like/H3/H4 sequences...
  11. pmc Palindrome regeneration by template strand-switching mechanism at the origin of DNA replication of porcine circovirus via the rolling-circle melting-pot replication model
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, Ames, Iowa 50010, USA
    J Virol 78:9016-29. 2004
    ....
  12. pmc Rolling-circle replication of an animal circovirus genome in a theta-replicating bacterial plasmid in Escherichia coli
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, Agricultural Research Service, US Department of Agriculture, Ames, Iowa 50010, USA
    J Virol 80:8686-94. 2006
    ....
  13. ncbi request reprint The essential and nonessential transcription units for viral protein synthesis and DNA replication of porcine circovirus type 2
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virology 313:452-9. 2003
    ..These results demonstrated that both Rep and Rep' are absolutely essential for PCV2 replication...
  14. pmc Detection of template strand switching during initiation and termination of DNA replication of porcine circovirus
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA Agricultural Research Service, Ames, Iowa 50010, USA
    J Virol 78:4268-77. 2004
    ..Thus, this melting-pot model provides insight into the mechanisms of DNA replication, gene correction, and illegitimate recombination at the Ori of PCV1, and it may be applicable to the replication of other circular DNA molecules...
  15. ncbi request reprint Comparative analysis of the transcriptional patterns of pathogenic and nonpathogenic porcine circoviruses
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virology 310:41-9. 2003
    ..This work provides a general framework and genetic basis to investigate the biologic properties (and differences) of PCV1 and PCV2...
  16. ncbi request reprint Detection of rampant nucleotide reversion at the origin of DNA replication of porcine circovirus type 1
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virology 333:22-30. 2005
    ....
  17. ncbi request reprint Identification of an octanucleotide motif sequence essential for viral protein, DNA, and progeny virus biosynthesis at the origin of DNA replication of porcine circovirus type 2
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA
    Virology 324:28-36. 2004
    ....
  18. ncbi request reprint A stem-loop structure, sequence non-specific, at the origin of DNA replication of porcine circovirus is essential for termination but not for initiation of rolling-circle DNA replication
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, PO Box 70, Ames, IA 50010, USA
    Virology 363:229-35. 2007
    ..The results also demonstrated that it is the stem-loop configuration, not nucleotide sequence specificity, that is critical for terminating RCR DNA replication...
  19. ncbi request reprint Regeneration of the replication-associated proteins tandem direct repeat recognition nucleotide sequence at the origin of DNA replication of porcine circovirus type 1
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Disease Center, PO Box 70, Ames, IA 50010, USA
    Virology 346:32-9. 2006
    ..Within the H sequence, selected nucleotides at specific positions are critical for Rep-associated protein recognition and for viral DNA replication...
  20. ncbi request reprint Transcriptional analysis of porcine circovirus type 2
    Andrew K Cheung
    Virus and Prion Diseases of Livestock Research Unit, National Animal Desease Center, USDA, Agrucultural research Service, Iowa 500010, USA
    Virology 305:168-80. 2003
    ..To date, only three RNAs (CR, Rep, and Rep') have been reported for PCV1-infected porcine kidney cells. Therefore, it is important to apply similar strategies from this study to reexamine the transcription pattern of PCV1...