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Molecular Biology Commons

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Theses/Dissertations

Graduate Theses and Dissertations

2014

Regulation

Articles 1 - 2 of 2

Full-Text Articles in Molecular Biology

Transcriptional Control Of Toxoplasma Development, Joshua Byran Radke Mar 2014

Transcriptional Control Of Toxoplasma Development, Joshua Byran Radke

Graduate Theses and Dissertations

Toxoplasma gondii is an obligate intracellular protozoan parasite of animals and man. The asexual life cycle of Toxoplasma involves three very distinct, but tightly coordinated developmental stages. In nature, the sporozoite (contained within an oocyst) and bradyzoite (contained within a tissue cyst) initiate infection of the intermediate host, followed by rapid differentiation into the actively replicating tachyzoite. When countered by an effective host response, the tachyzoite differentiates back into the latent bradyzoite and this unique ability of Toxoplasma to interconvert between the replicating tachyzoite and the latent bradyzoite within a single host is the cause of life long infection. The ...


A Single Molecular Study Of The Regulation Of Snare-Mediated Membrane Fusion, Jaekyun Song Jan 2014

A Single Molecular Study Of The Regulation Of Snare-Mediated Membrane Fusion, Jaekyun Song

Graduate Theses and Dissertations

The presynaptic membrane fusion is mediated by a protein set called SNARE (Soluble NSF Attachment protein REceptor) proteins. SNARE proteins form a ternary SNARE-complex that comprises minimal machinery for membrane fusion; the complex consists of three SNARE proteins: Syntaxin 1, SNAP-25 and Vamp 2, also called Synaptobrevin 2. The SNARE complex is a four-helix coiled coil with four SNARE motifs; two come from SNARE-25 and one each from Syntaxin 1 and Vamp 2. It is believed that a regulatory protein Complexin binds tightly to the SNARE complex and stabilizes the complex, preventing it from driving toward fusion. However, the detailed ...