Lipid Biochemistry of Fungi and Other Organisms by John D. Weete

By John D. Weete

In basic terms six years have handed because the precursor to this ebook, "Fungal Lipid Biochemistry," used to be released. It appeared to fulfill the necessity of a imperative entire connection with which scholars and researchers might flip for info at the lipid composition and metabolism in fungi. This e-book used to be involved in the distribution and biochemistry of lipids in fungi, and regularly lipid metabolism used to be provided in a comparative context. The imperative lipids lined have been the aliphatic hydrocarbons, fatty acids, sterols, acylglycerols, phospholipids, and sphingolipids. the ultimate chapters of the ebook, contributed by means of Drs. William Hess and Darrell J. Weber, summarized fungal metabolism and ultrastructure in the course of fungal spore germination and sporula­ tion. the data in that ebook has been thoroughly re-written, re-organized, multiplied, up-to-date, and is now pre­ sented below the altered name of LIPID BIOCHEMISTRY of Fungi and different Organisms. a few of the noteworthy additions in­ clude (1) an elevated presentation of lipid type, (2) short description of the ancient improvement of re­ seek on fungal lipids, (3) accelerated presentation of lipid construction in the course of vegetative development, and relating to nutrient usage, (4) the particularly new interpretation of the yeast fatty acid synthetase as a multifunctional enzyme instead of multienzyme complicated, (5) the chemistry, distribution, and biosynthesis of polyprenols and carote­ noids, and (6) condensation of the data on spore germination and sporulation into one bankruptcy with higher emphasis at the involvement and position of lipids in those techniques.

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6 Kessler & Nickerson, 1959 Chattaway et ale , 1968 C. , 1968; Bianchi, 1967 Bianchi, 1967 blastospore) (mycelium C. 1 (juvenile) C. 8 Chaetomium ca. 0 (yeast) H. 6 Fungus Continued Lipid Content (% Dry Weight) H. 0 (mycelium) H. 0 M. 7 brasiliensis (yeast) P. 3 S. 0 S. 0 S. , 1969 Eddy, 1958 Eddy, 1958 Shah & Knights, 1968 SentheShanmuganathan & Nicherson, 1962 differences between morphological forms of Blastomyces and Histoplasma species. The role of cell wall lipids is unknown. It has been suggested that they confer rigidity or protection against drying since morphological distortion is observed after the walls of dermatophytic fungi are extracted with fat solvents (Shah and Knights, 1968).

E. cis-9,lO-epoxyoctadecanoic acid. The position of methyl substituents is designated accordingly, but fatty acids with methyl groups at the w-l and w-2 positions are called iso- and anteiso-branched acids, respectively. A shorthand system is often used to denote fatty acids. e. ClS : 2 ' octadecadienoic acid. e. ~9,12 ClS:2. e. ~9c,12c ClS:2. e. ClS:3 w3, a-linolenic acid. Substituents on the molecule may be denoted accordingly, br CIS, iso cis; 2-0H CIS or 2h CIS. 3 Fatty acids are often broadly grouped by their quantitative occurrence in nature, major and minor acids.

1979). CHAPTER 3 FATTY ACIDS INTRODUCTION Fatty acids are aliphatic monocarboxylic acids, and those considered lipids have 10 or more carbons. Generally, fatty acids occur in nature as a homologous series ranging in chain length from C10 to C36' However, fatty acids commonly range from C14 to C20 in most organisms with the evennumbered homologues being predominant. Fatty acids with 16 and 18 carbon atoms are most common and quantitatively important. Fatty acids may be saturated (CnH2n+1COOH) or unsaturated [mono-(CnH2n-1COOH) and poly-(CnH2n_XCOOH)], they may have odd-numbered carbon chains, or they may be substituted with methyl, oxygen (keto, epoxy), or hydroxyl functions.

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