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Oligosaccharide Assembly01:24

Oligosaccharide Assembly

Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
Carbohydrate Digestion00:57

Carbohydrate Digestion

Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
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Biosynthesis of Polysaccharides

Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
Membrane Carbohydrates01:30

Membrane Carbohydrates

The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
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Membrane Carbohydrates01:30

Membrane Carbohydrates

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Updated: Jun 12, 2026

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

[Xylanase carbohydrate binding module: recent developments].

Liangwei Liu1, Jie Cheng, Hongge Chen

  • 1College of Life Science, Henan Agricultural University, Zhengzhou 450002, China. llw321@yahoo.com.cn

Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|June 4, 2010
PubMed
Summary
This summary is machine-generated.

Carbohydrate binding modules (CBMs) enhance xylanase ability to break down complex carbohydrates by improving substrate binding. Understanding CBMs offers new ways to engineer more effective xylanase enzymes.

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Area of Science:

  • Biochemistry
  • Enzymology
  • Protein Engineering

Context:

  • Xylanases are enzymes crucial for degrading complex carbohydrates like xylan.
  • Many xylanases possess a non-catalytic Carbohydrate Binding Module (CBM) that aids in substrate interaction.
  • Insoluble substrates present a challenge for enzyme activity.

Purpose:

  • To review the diverse sources, families, and binding characteristics of CBMs.
  • To elucidate the role of specific amino acids and linker peptides in CBM function.
  • To examine the impact of CBMs on xylanase thermostability and overall activity.

Summary:

  • Carbohydrate Binding Modules (CBMs) significantly improve the binding affinity of xylanases to insoluble substrates, thereby enhancing their catalytic efficiency.
  • This review details CBM sources, families, substrate-binding features, key amino acid residues, linker regions, and effects on enzyme thermostability.
  • The structural and functional insights into CBMs provide a basis for engineering improved xylanase enzymes.

Impact:

  • Highlights the critical role of CBMs in xylanase function for efficient biomass degradation.
  • Provides a comprehensive overview for researchers in enzymology and biotechnology.
  • Offers perspectives for protein engineering strategies to enhance xylanase performance for industrial applications.