{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/79145"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/79145","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Determinants of Rotavirus Polymerase Localization and Activity","abstract":"Rotavirus (RV) is a viral pathogen that causes severe, watery diarrhea and vomiting in the young of humans and other animals. RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus' RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase.","abstract_html":"Rotavirus (RV) is a viral pathogen that causes severe, watery diarrhea and vomiting in the young of humans and other animals. RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus' RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase.","abstract_has_math":false,"creators":["McKell, Allison Overstreet"],"institution":"Virginia Tech","degree_name":"Ph. D.","degree_level":"doctoral","degree_discipline":"Biomedical and Veterinary Sciences","degree_department":"Veterinary Medicine","school":null,"contributors":[],"advisors":[],"committee_chairs":["McDonald, Sarah"],"committee_members":["Friedlander, Michael J.","Yuan, Lijuan","Meng, Xiang-Jin","Dermody, Terence S."],"year":2017,"date_issued":"2017-09-19","date_published":"2017-09-19","updated_at":"2026-07-22T22:20:16Z","subjects":["rotavirus","polymerase","localization","enzymatic activity","confocal microscopy"],"languages":[],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:12663"],"render_values":[{"text":"vt_gsexam:12663","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/79145","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["McDonald, Sarah"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Friedlander, Michael J.","Yuan, Lijuan","Meng, Xiang-Jin","Dermody, Terence S."]},{"key":"dc:contributor.department","label":"Department","values":["Veterinary Medicine"]},{"key":"dc:creator","label":"Author","values":["McKell, Allison Overstreet"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2017-09-20T08:00:51Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2017-09-20T08:00:51Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-09-19"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biomedical and Veterinary Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["doctoral"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. 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RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus' RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase."]},{"key":"dc:description.abstractgeneral","label":"General Abstract","values":["Rotavirus (RV) is a viral pathogen that causes severe, watery diarrhea and vomiting in the young of humans and other animals. RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus’ RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Ph. D."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["ETD"]},{"key":"dc:title","label":"Title","values":["Determinants of Rotavirus Polymerase Localization and Activity"]}]}],"canonical_facts":{"dc:contributor.committeechair":["McDonald, Sarah"],"dc:contributor.committeemember":["Friedlander, Michael J.","Yuan, Lijuan","Meng, Xiang-Jin","Dermody, Terence S."],"dc:contributor.department":["Veterinary Medicine"],"dc:creator":["McKell, Allison Overstreet"],"dc:date.accessioned":["2017-09-20T08:00:51Z"],"dc:date.available":["2017-09-20T08:00:51Z"],"dc:date.issued":["2017-09-19"],"dc:description.abstract":["Rotavirus (RV) is a viral pathogen that causes severe, watery diarrhea and vomiting in the young of humans and other animals. RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus' RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase."],"dc:description.abstractgeneral":["Rotavirus (RV) is a viral pathogen that causes severe, watery diarrhea and vomiting in the young of humans and other animals. RV infections result in over 200,000 pediatric deaths around the world each year, especially in developing nations. Within the infected host cell, RV forms inclusion bodies, called viroplasms, where many stages of viral replication occur. The RV polymerase, known as VP1, must localize to viroplasms during infection where it replicates the virus’ RNA genome. The work described in this dissertation focused on identifying region(s) of VP1 essential for its viroplasmic localization and its function as a polymerase. We found that a single amino acid change in a region of the polymerase called the N-terminal domain negatively impacted its capacity to localize to viroplasms during infection as well as its enzymatic activity in a test tube. Follow up studies using VP1 proteins from divergent strains and a mutant containing only the N-terminal domain of VP1 provided more insight into polymerase localization determinants. In total, our work suggests that the VP1 N-terminal domain plays an important role in localizing the polymerase to viroplasms via interactions with other viral proteins and supporting its function as a polymerase."],"dc:description.degree":["Ph. D."],"dc:format.medium":["ETD"],"dc:identifier.other":["vt_gsexam:12663"],"dc:identifier.uri":["http://hdl.handle.net/10919/79145"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["rotavirus","polymerase","localization","enzymatic activity","confocal microscopy"],"dc:title":["Determinants of Rotavirus Polymerase Localization and Activity"],"dc:type":["Dissertation"],"thesis:degree_discipline":["Biomedical and Veterinary Sciences"],"thesis:degree_level":["doctoral"],"thesis:degree_name":["Ph. D."],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:16Z"}