Tulane University 18

Cells and Complexes

• Definition of Complex: Refers to structures within cells that do not have a membrane surrounding them.

• Nucleus as a Complex: The nucleus is considered a complex because it houses ribosomal subunits which are crucial for protein synthesis.

Sorting and Distribution of Proteins

• Protein Sorting: Responsible for distributing proteins to the correct locations within the cell.

• Protein Destination Examples:

  • Some proteins are directed to lysosomes.

  • Others are intended to be secreted outside the cell.

Glycosylation Process

• What is Glycosylation?: This process involves tagging proteins with carbohydrates to direct their movement and function in the cell.

• Tagging Molecule: The question of which molecule is used for tagging during glycosylation typically points to carbohydrates.

Carbohydrates Overview

• Monosaccharides: Made up of one monomer (single sugar unit).

• Disaccharides: Composed of two monomers (two sugar units).

• Oligosaccharides: Contain several (a few) monomers.

• Polysaccharides: Consist of many sugar units (long chains).

Health Monitoring

• Glucose Metabolism: To assess how well glucose is metabolized in the body, blood glucose levels are measured, not blood glucose phosphate.

• Importance of Blood Tests: Regular monitoring of blood glucose can provide important health insights.