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Team:Northwestern/Project/Chitin Synthesis
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Chitin is an abundant biopolymer found primarily in the exoskeletons of arthropods, including many insects and crustaceans. Composed of N-acetylglucosamine monomers (Figure 1), it functions analogously to keratin in mammalian skin, providing a support matrix for the protective outer surface of these animals. Similarly, most fungi produce chitin in their cell walls for structural support. Chitin production in Saccharomyces cerevisiae depends on a series of enzymatic steps (Figure 2).[[image:chitin_wikipedia.png|frame|right|alt=alt text|'''Figure 1''' Chitin molecular structure. <br /> Source: [http://en.wikipedia.org/wiki/Chitin Wikipedia - Chitin]]] <br /> | Chitin is an abundant biopolymer found primarily in the exoskeletons of arthropods, including many insects and crustaceans. Composed of N-acetylglucosamine monomers (Figure 1), it functions analogously to keratin in mammalian skin, providing a support matrix for the protective outer surface of these animals. Similarly, most fungi produce chitin in their cell walls for structural support. Chitin production in Saccharomyces cerevisiae depends on a series of enzymatic steps (Figure 2).[[image:chitin_wikipedia.png|frame|right|alt=alt text|'''Figure 1''' Chitin molecular structure. <br /> Source: [http://en.wikipedia.org/wiki/Chitin Wikipedia - Chitin]]] <br /> | ||
| - | One enzyme in this pathway, chitin synthase 3 (CHS3), was previously found to be among the most active chitin sythases in the chitin synthase family of enzymes and does not require additional cofactors to function. As a result, we use CHS3 as the chitin production mechanism in our inducible system ([http://partsregistry.org/Part:BBa_K418007 BBa_K418007]). | + | One enzyme in this pathway, chitin synthase 3 (CHS3), was previously found to be among the most active chitin sythases in the chitin synthase family of enzymes and does not require additional cofactors to function. As a result, we use CHS3 as the chitin production mechanism in our inducible system ([http://partsregistry.org/Part:BBa_K418007 BBa_K418007]). [[image:chitin synthesis small.jpg|frame|center|alt=alt text|'''Figure 2''' Chitin synthesis pathway. <br /> Adapted from Figure 3.1 of <u>Chitin: Fulfilling a Biomaterials Promise</u> by Eugene Khor.]]<br /> |
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Chitin has many applications, particularly in medicine and industry. Currently, nearly all chitin is obtained from natural sources (i.e. shells of crustaceans). Thus, a method of recombinant chitin production may have commercial applications. Several examples of chitin usage are listed below: | Chitin has many applications, particularly in medicine and industry. Currently, nearly all chitin is obtained from natural sources (i.e. shells of crustaceans). Thus, a method of recombinant chitin production may have commercial applications. Several examples of chitin usage are listed below: | ||
Latest revision as of 20:11, 25 October 2010
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 Figure 1 Chitin molecular structure. Source: [http://en.wikipedia.org/wiki/Chitin Wikipedia - Chitin] One enzyme in this pathway, chitin synthase 3 (CHS3), was previously found to be among the most active chitin sythases in the chitin synthase family of enzymes and does not require additional cofactors to function. As a result, we use CHS3 as the chitin production mechanism in our inducible system ([http://partsregistry.org/Part:BBa_K418007 BBa_K418007]).  Figure 2 Chitin synthesis pathway. Adapted from Figure 3.1 of Chitin: Fulfilling a Biomaterials Promise by Eugene Khor.
SIGNIFICANCE OF CHITIN: Medicinal Use:
Industrial Use:
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