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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Author: Paul R. Crocker
Publisher: Springer Science & Business Media
ISBN: 3540464107
Category : Science
Languages : en
Pages : 262
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Book Description
In the last decade there has been a great expansion in our knowledge of the existence, nature and functions of mammalian carbohydrate binding proteins. This book covers the structures and postulated functions for the major classes of mammalian carbohydrate binding proteins. These include intracellular lectins involved in diverse functions such as protein synthesis quality control, targetting of lysosomal enzymes and in the secretory pathway. In addition, several chapters are devoted to other major families of lectins that are found at the cell surface or in extracellular fluids which are involved in various recognition functions such as cell-cell interactions in inflammation and recognition of pathogen carbohydrates in host defence.
Author: Nathan Sharon
Publisher: Springer
ISBN: 9789401060295
Category : Science
Languages : en
Pages : 127
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A characteristic property of most, or perhaps all, proteins is their ability to combine specifically and reversibly with various substances. Well known examples are enzymes that bind substrates and inhibitors, and antibodies that bind antigens. This book deals with lectins, a class of proteins that bind carbohydrates. Another characteristic property of lectins is that they agglutinate cells or precipitate polysaccharides and glycoproteins. This is because lectins are polyvalent, i.e. each lectin molecule has at least two carbohydrate binding sites to allow crosslinking between cells (by combining with sugars on their surfaces) or between sugar containing macromolecules. The agglutinating and precipitating activities of lectins are very similar to those of antibodies. They can likewise be specifically inhibited by low molecular weight compounds (haptens), which in the case of lectins are sugars or sugar containing compounds (Fig. 1.1). Not surprisingly, therefore, many of the methods used in lectin research are based on immunochemical techniques. Nevertheless, lectins are different from antibodies in several important aspects. Many lectins are found in plants, microorganisms and viruses, which do not synthesize immunoglobulins. In fact, they are found in almost all living organisms (Table 1.1) and are not confined to specific organs or tissues. Another marked difference between the two classes of compound is that antibodies are structurally similar, whereas lectins are structurally diverse. In general, lectins are oligomeric proteins composed of subunits, usually with one sugar binding site per subunit.
Author:
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ISBN:
Category : Agriculture
Languages : en
Pages : 808
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Author:
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ISBN:
Category : Agriculture
Languages : en
Pages : 796
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Author: John J. Davis
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 20
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Author: United States. National Bureau of Standards
Publisher:
ISBN:
Category :
Languages : en
Pages : 228
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Author:
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ISBN:
Category : Animal painting and illustration
Languages : en
Pages : 306
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Author: Reliable Poultry Journal Publishing Company
Publisher:
ISBN:
Category : Poultry
Languages : en
Pages : 92
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Author: Edwin Jackson Kyle
Publisher:
ISBN: 9781360780122
Category : History
Languages : en
Pages : 590
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