Download Bioorganic Chemistry: A Chemical Approach to Enzyme Action by Hermann Dugas PDF

By Hermann Dugas

This widely-praised textbook is very fitted to complex undergraduates or graduates in chemistry, biochemistry, medicinal chemistry, and pharmacology. The 3rd version has been considerably revised to mirror new examine within the box, and lines an enormous new bankruptcy on self-assembly, auto-organization, and molecular units. the phenomenal figures stay a spotlight of the booklet, and have been defined in an past version as "the top i have obvious for exhibiting the natural chemistry of biomolecules." (Quart. Rev. Biol.)

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Additional info for Bioorganic Chemistry: A Chemical Approach to Enzyme Action

Example text

S-C-Val ~ J: :::. :;:::::. II ,SH S-C-Yol S-C-Orn ( ~ Pro +- r +- Phe -;:::: ~ 'J:~ SH ;;::: ~ Val PIre Pro +- +- Phe Val +- ~ ;::::. S-C-Leu-NH 2 -::;::::... SH ---+~ ~ o ~ ~ ~ II :::::: ~ .. ~ 0 ::::. t S-C-Orn-NH 2 ~ :.. S-'C-Om Val +- II +- Pro .... ;:~ ::::: S-C-Leu .... Om ~ Val +- Pro +- Phe H 2N-Phe -+ Pro +- ----+ SH 'J:H ~ :::;::... -" ;;::: S-C-Leu .... Om II ~ o 1 Phe -+ Pro Om -+ Leu Leu +- Om .... Val .... Pro +- Phe -+ Val -+ -+ Val -+ Om -+ ~ 0) Leu-C-S /-;::::;:; ~ +- Val ....

For the sake of simplicity the presentation will be limited to the combustion of sugar molecules in foods. In the context of bioorganic chemistry, where models of enzymes are developed, it is important to have a general understanding of the chemistry within the biological cell. An appreciation of these processes at a molecular and a supramolecular level is of prime importance since the network connecting these metabolic cycles is an integral part of the "unifying theme" of bioorganic chemistry (14).

Without the catalyst, other reaction pathways become possible, such as breakdown ofthe triphosphate chain, but the catalyst serves to bind and orientate the sulfur nucleophile in such a way that only attack on the methylene carbon becomes possible. Much more will be said later about the importance of such binding and proximity effects, but it should be noted that while the adenosine portion of the ATP molecule does not participate in the chemistry of the reaction, it does serve a recognition function.

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