vitellin

The scientist examines the vitellin in the egg yolk under a microscope.

Definition

1. Noun:
   • Biochemistry: "vitellin" is a phosphoprotein found in the yolk of eggs, serving as a major source of nutrients for developing embryos. It is a type of storage protein that contains high levels of phosphorus and amino acids.

Usage Examples

• Noun:
  • The embryo absorbs vitellin from the yolk to support its growth. (The developing organism uses the yolk protein for nourishment.)
  • Scientists study vitellin to understand how nutrients are stored in egg-laying animals. (Researchers examine this protein to learn about embryonic nutrition.)

Advanced Usage

• "vitellin breakdown": the process by which the protein is metabolized during embryonic development.

  • The breakdown of vitellin releases essential amino acids for the growing embryo. (The protein is digested to provide building blocks for new tissues.)

• "vitellin content": the amount of this protein present in an egg yolk.

  • The vitellin content of the egg decreases as the embryo develops. (The protein levels drop as it is consumed.)

Variants and Related Words

• Vitelline (adj): relating to or resembling the yolk of an egg.

  • The vitelline membrane surrounds the yolk. (The thin layer enclosing the yolk.)

• Vitellus (n): the yolk of an egg (a less common synonym).

  • The vitellus contains vitellin and other nutrients. (The yolk holds the protein.)

Synonyms

• Yolk protein: a general term for proteins found in egg yolk.
• Phosvitin: a specific phosphoprotein component of vitellin (often used interchangeably in some contexts).

Phrasal Verbs

Related Idioms