Thyroxine structural formula

The structural formulas of thyroxine and triiodothyronine as well as reverse triiodothyronine (rT3) are shown in Figure 38-2. 

The structural formulas of thyroxine and triiodothyronine as well as reverse triiodothyronine (rT3) are shown in Figure 38-2. All of these naturally occurring molecules are levo (L) isomers. The synthetic dextro (D) isomer of thyroxine, dextrothyroxine, has approximately 4% of the biologic activity of the L isomer as evidenced by its lesser ability to suppress TSH secretion and correct hypothyroidism. 

The structural formula of thyroxine, the amino acid present in the thyroid gland. 

Figure 94.1 The structural formula of thyroxine - the main secretory product of the thyroid gland. Thyroxine Is a complex amino acid with hormonal properties. The molecule contains four atoms of Iodine (heavy vertical bars), which makes up 65% of the molecular weight. The thyroid gland secretes fOOpg of thyroxine dally. To function properly, It must take up at least 65ri,g of Iodine dally. This necessitates a dietary dally Intake of 130pg, because about half of the Iodine taken In through the diet gets lost In the urine.

Thyroxine is a secretion of the thyroid gland that controls metabolism. Its structural formula is... 

---

See also in sourсe #XX -- [ ]

---