Although HIV-1 Vpr displays several functions in vitro, limited information exists concerning their relevance during infection. Here, we characterized Vpr variants isolated from a rapid and a long-term non-progressor (LTNP). Interestingly, vpr alleles isolated from longitudinal samples of the LTNP revealed a dominant sequence that subsequently led to diversity similar to that observed in the progressor patient. Most of primary Vpr proteins accumulated at the nuclear envelope and interacted with host-cell partners of Vpr. They displayed cytostatic and proapoptotic activities, although a LTNP allele, harboring the Q65R substitution, failed to bind the DCAF1 subunit of the Cul4a/DDB1 E3 ligase and was inactive. This Q65R substitution correlated with impairment of Vpr docking at the nuclear envelope, raising the possibility of a functional link between this property and the Vpr cytostatic activity. In contradiction with published results, the R77Q substitution, found in LTNP alleles, did not influence Vpr proapoptotic activity.
We investigate the consequences for non-promoted executives (NPEs) in CEO tournaments. We find that NPEs’ total incentives decrease following the end of a tournament based on evidence of their reduced future promotion prospects and limited adjustments to their compensation. Consistent with the theory that NPEs leave in response to this loss in incentives, results indicate that turnover is higher for NPEs who: 1) are ex ante more competitive for promotion, 2) compete in open tournaments without an heir apparent versus closed tournaments with an heir apparent winner, and 3) compete in tournaments with an outsider versus insider winner. Departed NPEs’ subsequent career outcomes suggest that the labor market assesses NPEs who leave after open tournaments more favorably than those who leave after closed tournaments and tournaments with an outsider winner. Overall, evidence suggests that promotion tournaments can weed out low-quality managers but also cause the unintended turnover of high-quality managers.
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