difference between fibrous and globular protein with example of each

Fibrous and globular proteins are two types of proteins that differ in their structure, function, and solubility.

1. Fibrous Proteins:

   • Structure: Fibrous proteins have a long, rod-like shape. They are structured in a way that they form long fibers or sheets.
   • Function: They generally have structural or mechanical roles. They provide support, shape, and external protection to vertebrates.
   • Solubility: They are generally insoluble in water.
   • Example: Keratin, which is found in hair, nails, and feathers, and Collagen, which is found in connective tissues, are examples of fibrous proteins.

2. Globular Proteins:

   • Structure: Globular proteins are more compact and rounded in shape. They are folded into a spherical or globular shape.
   • Function: They have a wide range of functions including transport, enzymes, antibodies, etc.
   • Solubility: They are generally soluble in water.
   • Example: Hemoglobin, which carries oxygen in the blood, and Insulin, which regulates blood sugar levels, are examples of globular proteins.