{"title":"墨氏塔芳的纤维素分解体系","authors":"Anthony McHale, Michael P. Coughlan","doi":"10.1016/0005-2744(81)90236-9","DOIUrl":null,"url":null,"abstract":"<div><p>The thermophyllic fungus <em>Talaromyces emersonii</em> produces three extracellular and one intracellular enzymes exhibiting β-glucosidase (1,4-(1,3;1,4)-β-<span>d</span>-glucan 4-glucanohydrolase, EC 3.2.1.21) activity. Two of the extracellular forms β-glucosidase I and β-glucosidase III have been purified as has the intracellular, β-glucosidase IV. The pH and temperature, optima, stability, kinetic parameters and substrate specificity of each has been determined. We conclude that β-glucosidase I and β-glucosidase IV are true cellobiases while β-glucosidase III is an exo-β-1,4-glucose hydrolase.</p></div>","PeriodicalId":100159,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Enzymology","volume":"662 1","pages":"Pages 152-159"},"PeriodicalIF":0.0000,"publicationDate":"1981-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0005-2744(81)90236-9","citationCount":"61","resultStr":"{\"title\":\"The cellulolytic system of Talaromyces emersonii\",\"authors\":\"Anthony McHale, Michael P. Coughlan\",\"doi\":\"10.1016/0005-2744(81)90236-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The thermophyllic fungus <em>Talaromyces emersonii</em> produces three extracellular and one intracellular enzymes exhibiting β-glucosidase (1,4-(1,3;1,4)-β-<span>d</span>-glucan 4-glucanohydrolase, EC 3.2.1.21) activity. Two of the extracellular forms β-glucosidase I and β-glucosidase III have been purified as has the intracellular, β-glucosidase IV. The pH and temperature, optima, stability, kinetic parameters and substrate specificity of each has been determined. We conclude that β-glucosidase I and β-glucosidase IV are true cellobiases while β-glucosidase III is an exo-β-1,4-glucose hydrolase.</p></div>\",\"PeriodicalId\":100159,\"journal\":{\"name\":\"Biochimica et Biophysica Acta (BBA) - Enzymology\",\"volume\":\"662 1\",\"pages\":\"Pages 152-159\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1981-11-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0005-2744(81)90236-9\",\"citationCount\":\"61\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biochimica et Biophysica Acta (BBA) - Enzymology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0005274481902369\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochimica et Biophysica Acta (BBA) - Enzymology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0005274481902369","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The thermophyllic fungus Talaromyces emersonii produces three extracellular and one intracellular enzymes exhibiting β-glucosidase (1,4-(1,3;1,4)-β-d-glucan 4-glucanohydrolase, EC 3.2.1.21) activity. Two of the extracellular forms β-glucosidase I and β-glucosidase III have been purified as has the intracellular, β-glucosidase IV. The pH and temperature, optima, stability, kinetic parameters and substrate specificity of each has been determined. We conclude that β-glucosidase I and β-glucosidase IV are true cellobiases while β-glucosidase III is an exo-β-1,4-glucose hydrolase.
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