By W. Babel, A. Steinbuechel (Editor)
Residing structures synthesize seven various periods of polymers. they supply constitution and shape for cells and organisms, functionality as catalysts and effort garage and hold the genetic info. a majority of these polymers own technically attention-grabbing homes. a few of these biopolymers are already used commercially. This exact quantity of Advances in Biochemical Engineering/Biotechnology includes 10 chapters. It supplies an summary of the water insoluble biopolyesters, particularly of the microbially synthesized poly-hydroxyalkanoate (PHA) family members. It experiences the cutting-edge of metabolism, rules and genetic history, the most recent advances made in genetic optimization of micro organism, "construction" of transgenic crops and in vitro synthesis via purified enzymes. in addition, it describes proper applied sciences and evaluates views pertaining to expanding the commercial viability and competitiveness of PHA and discusses functions in medication, packaging, nutrition and different fields.
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Additional info for Advances in Biochemical Engineering Biotechnology, Volume 071, Biopolyesters
Fernando G, Zimmermann W, Kolattukudy PE (1984) Physiol Plant Pathol 24:143 140. Faulds CB, Williamson G (1993) Biotechnol Appl Biochem 17:349 141. Edwards D, Abbott GD, Raven JA (1996) Cuticles of early land plants: a palaeoecophysiological evaluation. In: Kerstiens G (ed) Plant cuticles: an integrated functional approach. BIOS Scientific Publishers, Oxford UK, chap 1 142. Schreiber L, Kirsch T, Riederer M (1996) Diffusion through cuticles: principles and models. In: Kerstiens G (ed) Plant cuticles: an integrated functional approach.
Kolattukudy with the active serine. Alkyl isocyanates, known to react with active serine-containing enzymes, were found to be potent inhibitors of fungal cutinase . Fungal cutinase is very unusual in that it could not be readily modified by treatment with reagents that are known to react with the other residues of the catalytic triad. However, when it was found that SDS, above the critical micellar concentration (CMC), inactivated the enzyme and that the cutinase activity could be fully and rapidly recovered by the addition of Triton X-100, chemical modification could be achieved in the presence of SDS .
Analysis of the released carbohydrates after reduction with NaB3H4 showed that monosaccharides are Oglycosidically attached to this protein at serine and threonine residues and in some cases at b-hydroxyphenylalanine and b-hydroxytyrosine residues. The O-glycosidically attached sugars so far identified are mannose, N-acetylglucosamine, glucuronic acid, and arabinose [94, 104]. Fungal cutinase constitutes the first case where the novel structure of O-glycosidically-attached monosaccharides such as N-acetylglucosamine are found in proteins.