Definition

1. Noun:
   • A tyrosine derivative with two iodine atoms attached: "di-iodotyrosine" is a biochemical compound formed by the addition of two iodine atoms to the amino acid tyrosine. It is an intermediate in the synthesis of thyroid hormones.

Usage Examples

• Noun:
  • Di-iodotyrosine is a precursor in the biosynthesis of thyroxine.
  • The enzyme thyroid peroxidase catalyzes the formation of di-iodotyrosine from tyrosine.

Advanced Usage

• In biochemical pathways: The term is used specifically in the context of endocrinology and thyroid hormone synthesis.
  • The coupling of two molecules of di-iodotyrosine produces tetraiodothyronine (T4).

Variants and Related Words

• Monoiodotyrosine (noun): A tyrosine derivative with one iodine atom attached.
  • Monoiodotyrosine is another intermediate in thyroid hormone production.
• Thyroxine (T4) (noun): The primary thyroid hormone, which is synthesized from di-iodotyrosine.
• Triiodothyronine (T3) (noun): An active thyroid hormone.

Synonyms

• DIT (abbreviation): A common abbreviation used in biochemical literature.
  • The pathway involves the conversion of MIT and DIT into T3 and T4.

Related Terms and Context

• Iodination (noun): The chemical process of adding iodine atoms, which is how di-iodotyrosine is formed.
  • Iodination of tyrosine residues is a key step in the thyroid gland.
• Thyroglobulin (noun): The protein upon which tyrosine is iodinated to form di-iodotyrosine and other iodothyronines.

Noun

1. tyrosine with two iodine atoms added