{"id":194464,"date":"2025-02-24T06:29:37","date_gmt":"2025-02-24T06:29:37","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=194464"},"modified":"2025-02-24T06:29:40","modified_gmt":"2025-02-24T06:29:40","slug":"glycosaminoglycans-gags-are-heteropolysaccharides-composed-of-repeating-disaccharide-units","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/02\/24\/glycosaminoglycans-gags-are-heteropolysaccharides-composed-of-repeating-disaccharide-units\/","title":{"rendered":"Glycosaminoglycans (GAGs) are heteropolysaccharides composed of repeating disaccharide units"},"content":{"rendered":"\n

Glycosaminoglycans (GAGs) are heteropolysaccharides composed of repeating disaccharide units. These units have some similar characteristics that allow them to be identified as GAGS.
Which of the structures are examples of glycosaminoglycans?<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Glycosaminoglycans (GAGs) Overview<\/strong><\/h3>\n\n\n\n

GAGs are long, unbranched polysaccharides consisting of repeating disaccharide units. These disaccharide units generally contain:<\/p>\n\n\n\n

    \n
  1. A Hexosamine<\/strong> \u2013 either N-acetylglucosamine<\/strong> or N-acetylgalactosamine<\/strong>.<\/li>\n\n\n\n
  2. An Acidic Sugar<\/strong> \u2013 usually glucuronic acid<\/strong> or iduronic acid<\/strong>.<\/li>\n<\/ol>\n\n\n\n

    GAGs are negatively charged due to their sulfate or carboxyl groups, making them hydrophilic and essential in extracellular matrices, cartilage, and connective tissues.<\/p>\n\n\n\n

    Common GAGs<\/strong><\/h3>\n\n\n\n
      \n
    1. Hyaluronic Acid<\/strong> \u2013 Composed of glucuronic acid<\/strong> and N-acetylglucosamine<\/strong>.<\/li>\n\n\n\n
    2. Chondroitin Sulfate<\/strong> \u2013 Contains glucuronic acid<\/strong> and N-acetylgalactosamine sulfate<\/strong>.<\/li>\n\n\n\n
    3. Dermatan Sulfate<\/strong> \u2013 Composed of iduronic acid<\/strong> and N-acetylgalactosamine sulfate<\/strong>.<\/li>\n\n\n\n
    4. Heparan Sulfate<\/strong> \u2013 Made of glucuronic\/iduronic acid<\/strong> and N-acetylglucosamine sulfate<\/strong>.<\/li>\n\n\n\n
    5. Keratan Sulfate<\/strong> \u2013 Unique as it lacks uronic acid and contains galactose and N-acetylglucosamine sulfate<\/strong>.<\/li>\n<\/ol>\n\n\n\n

      Identifying GAGs from the Structures<\/strong><\/h3>\n\n\n\n

      If the provided image contains molecules with:<\/p>\n\n\n\n

        \n
      • Repeating disaccharides<\/strong><\/li>\n\n\n\n
      • A hexosamine (N-acetylglucosamine or N-acetylgalactosamine)<\/strong><\/li>\n\n\n\n
      • An acidic sugar (glucuronic acid, iduronic acid, or sulfate modifications)<\/strong><\/li>\n<\/ul>\n\n\n\n

        Then those structures are glycosaminoglycans<\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"

        Glycosaminoglycans (GAGs) are heteropolysaccharides composed of repeating disaccharide units. These units have some similar characteristics that allow them to be identified as GAGS.Which of the structures are examples of glycosaminoglycans? The Correct Answer and Explanation is : Glycosaminoglycans (GAGs) Overview GAGs are long, unbranched polysaccharides consisting of repeating disaccharide units. These disaccharide units generally contain: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-194464","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=194464"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/194464\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=194464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=194464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=194464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}