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Theses/Dissertations

2013

Cell and Developmental Biology

University of Tennessee, Knoxville

Protein targeting

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Experimental And Computational Analysis Of Chloroplast Transit Peptide Domain Architecture And Function, Prakitchai Chotewutmontri May 2013

Experimental And Computational Analysis Of Chloroplast Transit Peptide Domain Architecture And Function, Prakitchai Chotewutmontri

Doctoral Dissertations

The Majority of chloroplast proteins are nuclear-encoded and utilize an N-terminal transit peptide (TP) to target into chloroplasts via the general import pathway. Bioinformatic and proteomic analyses provide thousands of predicted TPs, which show low sequence similarity. How the common chloroplast translocon components recognize these diverse TPs is not well understood. Previous results support either sequence- or physicochemical-specific recognitions. To further address this question, a reverse sequence approach was utilized such that the reverse TP contains the same amino acid composition as wild-type TP but lack similar sequence motifs. Using both native and reverse TPs of the two well-studied precursors ...