Publications by authors named "R Marvin"
malaria parasites retain an essential mitochondrional electron transport chain (ETC) that is critical for growth within humans and mosquitoes and is a key antimalarial drug target. ETC function requires cytochromes and , which are unusual among heme proteins due to their covalent binding to heme via conserved CXXCH sequence motifs. Heme attachment to these proteins in most eukaryotes requires the mitochondrial enzyme holocytochrome synthase (HCCS) that binds heme and the apo cytochrome to facilitate the biogenesis of the mature cytochrome or .
View Article and Find Full Text PDFmalaria parasites retain an essential mitochondrional electron transport chain (ETC) that is critical for growth within humans and mosquitoes and a key antimalarial drug target. ETC function requires cytochromes and that are unusual among heme proteins due to their covalent binding to heme via conserved CXXCH sequence motifs. Heme attachment to these proteins in most eukaryotes requires the mitochondrial enzyme holocytochrome synthase (HCCS) that binds heme and the apo cytochrome to facilitate biogenesis of the mature cytochrome or .
View Article and Find Full Text PDFThe mitochondrial electron transport chain (ETC) of malaria parasites is a major antimalarial drug target, but critical cytochrome (cyt) functions remain unstudied and enigmatic. Parasites express two distinct cyt homologs ( and -2) with unusually sparse sequence identity and uncertain fitness contributions. cyt -2 is the most divergent eukaryotic cyt homolog currently known and has sequence features predicted to be incompatible with canonical ETC function.
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- - The study measured protein levels in 986 individuals to predict the severity of COVID-19, using both protein data and clinical risk factors to build predictive models.
- - A baseline model using age and sex achieved a prediction accuracy of 65%, but incorporating 92 specific proteins improved this accuracy to 88% in the initial group and maintained 86% in a separate test group.
- - Findings indicate that early-stage protein measurements can effectively predict COVID-19 severity, highlighting the need for further research to integrate these measurements into clinical practice.
Introduction: In psychiatry, several converging factors are impacting the recruitment of residents: the increased competitiveness of the specialty, the national trend to take active steps to improve diversity and inclusion, and the decision from USMLE to change Step 1 to a pass/fail result.
Methods: We developed a workshop for psychiatry residency program directors to meet these challenges and transition into using a holistic review model during recruitment. The workshop included (1) a didactic session providing background on the AAMC holistic review model; (2) a small-group exercise to determine and prioritize experiences, attributes, competencies, and metrics (EACMs) aligned with the program's mission and aims; (3) a review of the rankings from the previous exercise, selection of two "very important" criteria for each of the four domains of the EACM model, and operationalization of these criteria based on the recruitment process; and (4) a discussion focused on application of program criteria with example applicants.