By William Stillwell
Introduction to organic Membranes: Composition, constitution and serve as, moment Edition is a significantly improved revision of the 1st version that integrates many features of advanced organic membrane features with their composition and constitution. A unmarried membrane consists of enormous quantities of proteins and hundreds of thousands of lipids, all in consistent flux. each point of membrane structural experiences includes parameters which are very small and quick.
Both dimension and time levels are so titanic that a number of instrumentations has to be hired, usually at the same time. hence, various hugely really good and esoteric biochemical and biophysical methodologies are usually applied. This ebook addresses the salient good points of membranes on the molecular point, delivering cohesive, foundational details for complex undergraduate scholars, graduate scholars, biochemists, and membranologists who search a wide review of membrane science.
- Significantly elevated assurance on functionality, composition, and constitution
- Brings jointly advanced elements of membrane study in a universally comprehensible manner
- Features profiles of membrane pioneers detailing how modern reports originated
- Includes a timeline of vital discoveries on the topic of membrane science
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Extra resources for An Introduction to Biological Membranes. Composition, Structure and Function
Water insolubility is conferred via lipid molecular structure, having large regions of the surface composed of hydrocarbons with very few polar groups. A subset of lipids, those of interest in membrane studies, are structurally schizophrenic, containing segments that are polar and so prefer dissolution into water and more extensive regions that are totally nonpolar and avoid water at all cost. These lipids are referred to as “amphipathic,” or containing both hydrophobic and hydrophilic moieties (Fig.
Lipids exhibit a wide diversity of biological functions, which are primarily discussed in the second half of this book (Part II. Membrane Biological Functions). Lipid functions include: 1. 2. 3. 4. 5. 6. 7. 8. Energy source (fats and oils) Membrane bilayer component deﬁning the cell permeability barrier (lipid bilayer) Matrix for assembly and function of many catalytic processes Chaperones for protein folding Light absorber (eg, chlorophyll, retinal) Energy transduction (eg, retinyl component attached to rhodopsin) Electron carrier (eg, coenzyme Q) Hormone (eg, testosterone, progesterone) I.
1 Chain Length FAs commonly have a chain of 4 to 36 carbons (usually unbranched and even-numbered), which may be saturated or unsaturated. Chains of carbon length 4 to 6 are referred to as short-chain, 8 to 10 medium-chain, and 12 to 24 (or longer) as long-chain. Short-chain FAs are chemically more closely related to sugars than to fats and are not major components of membranes. Most membrane fatty acyl chains are 14, 16, 18, 20, 22, or 24 carbons in length. While present, odd carbon straight-chain FAs are far less abundant.
An Introduction to Biological Membranes. Composition, Structure and Function by William Stillwell