Sandbox 51: Difference between revisions
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=== Introduction === | === Introduction === | ||
Lysozyme is a powerful enzyme of biological significance found in abundance in tears, saliva, and human milk. In humans, it is encoded in the ''LYZ'' gene. Lysozyme is also known as muramidase, or glycoside hydrolase. Since it is a small, easily available, and highly stable protein containing only 129 amino acid residues, it has been subject to extensive research regarding its function and structure. Hen Egg White (HEW) Lysozyme is shown below. | Lysozyme is a powerful enzyme of biological significance found in abundance in tears, saliva, and human milk. In humans, it is encoded in the ''LYZ'' gene. Lysozyme is also known as muramidase, or glycoside hydrolase. Although it is responsible for the initial digestion of starches in the mouth, it is most widely used as a non-specific defense in gram positive bacteria and in many species of fungi. Due to its antibacterial effects, it is a strong component of the innate immune system, and is an important part of an infant's diet to ward off diarrheal diseases.Since it is a small, easily available, and highly stable protein containing only 129 amino acid residues, it has been subject to extensive research regarding its function and structure. Hen Egg White (HEW) Lysozyme is shown below. | ||
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The particular substrate of preference for this cleavage type is a (NAG-NAM)₃ hexasaccharide, within which substrate occurs the | The particular substrate of preference for this cleavage type is a (NAG-NAM)₃ hexasaccharide, within which substrate occurs the | ||
cleaving target glycosidic bond | cleaving target glycosidic bond, NAM₄-β-O-NAG₅. The individual hexasaccharide binding units are designated A-F, with NAM₄-β-O-NAG₅ glycosidic bond cleavage preference corresponding to a D-E unit glycosidic bond cleavage preference. | ||