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Full-Text Articles in Genetics and Genomics
Employing High Probability Gene Choice Elements To Understand Singular Odorant Receptor Expression, Raena Mina
Employing High Probability Gene Choice Elements To Understand Singular Odorant Receptor Expression, Raena Mina
Dissertations, Theses, and Capstone Projects
The ability to detect odorous chemicals in the environment is the oldest of the senses necessary for survival, from escaping danger, finding mates, to locating food. It is said that humans can identify and discriminate up to a trillion different odor mixtures. For chemoreception to have such a high discriminatory power, would require a diverse population of cells dedicated for odor detection. These detector cells are the olfactory sensory neurons (OSNs), which express odorant receptors (ORs) that bind to chemical odors in the environment. In order to increase specificity and sensitivity, an essential property in olfaction is for each OSN …
Probing The Limits Of Singular Gene Expression Through The Activity Of High Representation Odorant Receptor Transgenes, Eugene Lempert
Probing The Limits Of Singular Gene Expression Through The Activity Of High Representation Odorant Receptor Transgenes, Eugene Lempert
Dissertations, Theses, and Capstone Projects
Singular gene expression is a common phenomenon in biology, making its appearance in immunoglobulin selection, protocadherin expression, X chromosome-inactivation, random monoallelic expression, and olfactory receptor choice. Singularity involves an activation and a feedback step. The mechanisms of singular gene choice have some capacity to integrate additional member genes while still maintaining singularity, but will activate an additional member if an earlier choice was incapable of triggering the feedback step. Odorant Receptor (OR) genes are substantially divergent from each other in terms of coding sequence, promoter structure, and genomic locus, all of which plays a role in how many Olfactory Sensory …
Receptor-Mediated Maturation Of Olfactory Sensory Neurons: A Time Course Evaluation Of Neuronal Maturation In Neomorphic Mutants, Elizabeth Miller
Receptor-Mediated Maturation Of Olfactory Sensory Neurons: A Time Course Evaluation Of Neuronal Maturation In Neomorphic Mutants, Elizabeth Miller
Theses and Dissertations
How expression of odorant receptors affects the maturation of olfactory sensory neurons (OSNs) is not known. In a time course experiment, we show that wild type OSNs mature significantly more than those expressing Neomorphic mutant receptors. We conclude that functional receptors are critical to the differentiation and survival of OSNs.