Pronunciation: [jˈʊ͡əɹəsˌɪn] (IPA) 
The word "urosin" is spelled using the International Phonetic Alphabet (IPA) as juːrəʊsɪn. The first sound is represented by the letter "j" and is pronounced as the "y" sound in "yes." The "uː" represents the long "u" sound, as in "too." The "r" sound is the same as in "red." The next sound is the "schwa" sound represented by "ə." The "o" sound is pronounced as in "go." Finally, "sɪn" represents the "sin" sound as in "begin."
Urosin is a chemical compound that belongs to the class of organic compounds known as amino acids and derivatives. Specifically, it is categorized as an alpha-amino acid, meaning it contains an amino group (-NH2) and a carboxylic acid group (-COOH) attached to the alpha carbon in its molecular structure. Urosin is a non-proteinogenic amino acid, indicating that it is not incorporated into proteins during protein synthesis.
An important characteristic of urosin is its role as an intermediate in the biosynthesis of certain compounds. It serves as a precursor in the pathway that leads to the production of porphyrins, which are essential components in the synthesis of heme. Heme is a crucial component of various proteins, such as hemoglobin, that are involved in oxygen transport throughout the body.
Urosin is formed through a biochemical process called the uroporphyrinogen III synthase activity. This enzyme catalyzes the conversion of hydroxymethyl bilane into urosin, thereby initiating the synthesis of porphyrins. Urosin is further metabolized to give rise to other porphyrins, such as uroporphyrinogen III.
In certain medical conditions, abnormalities in the synthesis or metabolism of urosin can occur, leading to various disorders known as porphyrias. These disorders are characterized by the accumulation of porphyrins or their precursors, which can cause symptoms such as abdominal pain, neurological problems, and skin sensitivity to light.
Trade name of a mixture of lithium citrate and quinic acid, recommended as a solvent of uric acid calculi.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
