OBJECTIVE To investigate distinctive features in drug-resistant mutations (DRMs) and interpretations for reverse transcriptase inhibitors (RTIs) between proviral DNA and paired viral RNA in HIV-1-infected patients. METHODS Forty-three HIV-1-infected individuals receiving first-line antiretroviral therapy were recruited to participate in a multicenter AIDS Cohort Study in Anhui and Henan Provi...

DNA of human spumaretrovirus (HSRV) was cloned from both cDNA and from viral DNA into phage lambda and bacterial plasmid vectors. The recombinant plasmids harboring viral DNA were characterized by Southern blot hybridization and restriction mapping. Physical maps were constructed from cDNA and found to be colinear with the restriction maps obtained from viral DNA. The recombinant clones isolate...

DNA of the avian hepadnavirus, duck hepatitis B virus, was found to be integrated at low abundance into the cellular DNA extracted from the livers of infected ducklings. The frequency of integration was estimated to be at least one viral genome per 10(3) to 10(4) cells by 6 days postinfection. The structures of virus-cell junctions determined by sequencing were compared with those of virus-viru...

The extract of licorice (Glycyrrhiza glabra L.) has been widely used for many centuries in the traditional Chinese medicine as native anti-allergic agent. Glycyrrhizin (GL), a triterpenoid-saponin, extracted from the roots of licorice is the most effective compound for inflammation and allergic diseases in human body. The biological and pharmacological studies revealed that GL possesses many ph...

“Jumbo phages” are an emergent and ubiquitous class of large (>200 kb) dsDNA bacteriophages—viruses that infect bacteria—that construct a selectively-permeable, proteinaceous compartment around their replicating genome during infection. This micron-scale compartment, termed the “phage nucleus”, forms de novo grows with viral DNA. The phage nucleus allows export mRNA import select DNA replicatio...

Polyoma virus (Py) transformation of rat cells requires integration of viral genomes into the host DNA, which generally occurs in a partial or full head-to-tail tandem arrangement. The instability of this structure was previously demonstrated by the high rate of loss of integrated Py genomes in the presence of viral large tumor (T) antigen. We now show that integrated Py DNA sequences can also ...

Replication foci are generated by many viruses to concentrate and localize viral DNA synthesis to specific regions of the cell. Expression of the HPV16 E1 and E2 replication proteins in keratinocytes results in nuclear foci that recruit proteins associated with the host DNA damage response. We show that the Brd4 protein localizes to these foci and is essential for their formation. However, when...

Double-strand breaks (DSBs) in DNA are recognized by the Ku70/80 heterodimer and the MRE11-RAD50-NBS1 (MRN) complex and result in activation of the DNA-PK and ATM kinases, which play key roles in regulating the cellular DNA damage response (DDR). DNA tumor viruses such as Kaposi's sarcoma-associated herpesvirus (KSHV) are known to interact extensively with the DDR during the course of their rep...

In addition to their encapsidation function, viral coat proteins (CP) contribute to viral life cycle in many different ways. The CPs of the geminiviruses are responsible for intra- as well as inter-plant virus transmission and might determine the yield of viral DNA inside the infected tissues by either packaging the viral DNA or interfering with the viral replicative machinery. Since the cognat...