Donnie A Shepard

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Recent empirical studies have found that schizophrenics exhibit diminished observable facial expressivity in response to emotional stimuli (e.g., Berenbaum and Oltmanns 1992; Kring et al 1993; Kring and Neale 1996) yet report experiencing similar levels of emotion as their normal counterparts; however, it remains unclear whether schizophrenics are(More)
Spontaneous mutants of human rhinovirus 14 resistant to WIN 52084, an antiviral compound that inhibits attachment to cells, were isolated by selecting plaques that developed when wild-type virus was plated in the presence of high (2 micrograms/ml) or low (0.1 to 0.4 micrograms/ml) concentrations of the compound. Two classes of drug resistance were observed:(More)
Stable phosphoinositide (PIP(n))-containing liposomes were prepared using polydiacetylene photochemistry. Tethered pentacosadiynyl inositol polyphosphate (InsP(n)) analogues of Ins(1,3,4)P(3), Ins(1,4,5)P(3), and Ins(1,3,4,5)P(4) were synthesized, incorporated into vesicles made up of diyne-phosphatidylcholine and -phosphatidylethanolamine, and polymerized(More)
WIN compounds inhibit attachment of human rhinovirus 14 by binding to a hydrophobic pocket within the capsid and inducing conformational changes in the canyon floor, the region that binds the cellular receptor. To study the basis of drug resistance, we isolated and characterized a family of human rhinovirus 14 mutants resistant to WIN 52035-2.(More)
Structures have been determined of three human rhinovirus 14 (HRV14) compensation mutants that have resistance to the antiviral capsid binding compounds WIN 52035 and WIN 52084. In addition, the structure of HRV14 is reported, with a site-directed mutation at residue 1219 in VP1. A spontaneous mutation occurs at the same site in one of the compensation(More)
Association of the reovirus proteins sigma 3 and mu 1 influences viral entry, initiation of outer capsid assembly, and modulation of the effect of sigma 3 on cellular translation. In this study, we have addressed whether structural changes occur in sigma 3 as a result of its interaction with mu 1. Using differences in protease sensitivity to detect(More)
Reovirus capsid protein delta 3 binds both double-stranded RNA (dsRNA) and zinc. Previous studies have revealed that the amino-terminal zinc finger is not required for the ability of delta 3 to bind dsRNA. We expressed wild-type and mutant delta 3 molecules by in vitro transcription/translation to evaluate the importance of the zinc finger for other(More)
Tlhe role of ABO blood groups in differential susceptibility to various diseases lhas lonig been a subject of investigation ani(1 debate(1). The genetic factors involve(l in resistanice against Virus infectionis lhave been reviewed by Allison(2). In the l)ast few years tlhree reports l)y Englislh writers lhave claimed to slhow a hiiglher susceptibility of(More)
The WIN drugs and similar hydrophobic compounds that insert into the capsid of picornaviruses have been shown to block viral uncoating. In some of the human rhinoviruses they also block attachment of virus to cells. Spontaneously occurring drug-resistant mutants of human rhinovirus 14 and poliovirus type 3 were selected for their ability to make plaques in(More)
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