| 释义 |
Definition of cystine in English: cystinenoun ˈsɪstɪnˈsɪstiːnˈsɪstin mass nounBiochemistry A compound which is an oxidized dimer of cysteine and is the form in which cysteine often occurs in organic tissue. 〔生化〕胱氨酸，双硫丙氨酸 Chemical formula: C₆H₁₂N₂O₄S₂ Example sentencesExamples - In 1812, William Hyde Wollaston found a substance in urine that he identified as a cystic oxide, and was later named cystine.
- Cysteine in the extracellular space is mostly oxidized to cystine.
- Glutathione conjugation uses Nacetylcysteine, cysteine, and methionine; cystine is used for sulfation; and glucuronidation requires pantothenic acid.
- Zinc is required for the incorporation of cystine into keratin.
- Stones can be composed of calcium, oxalate, urate, cystine, xanthine, phosphate, or all of these.
- The proteins of soyabean yields all essential amino acids in adequate amounts, except methionine and cystine.
- Once inside a cell, cystine is rapidly reduced to cysteine that, as a precursor of GSH, undergoes GSH synthesis.
- Cysteamine enters the lysosomes by a specific transporter and converts cystine to cysteine and cysteine-cysteamine mixed disulfide.
- Decomposition of urine containing cystine or pus will have the odor of rotten eggs.
- The sulfur-containing amino acids are methionine, cysteine, cystine, homocysteine, homocystine, and taurine.
OriginMid 19th century: from Greek kustis 'bladder' (because it was first isolated from urinary calculi) + -ine4. Definition of cystine in US English: cystinenounˈsistēnˈsɪstin Biochemistry A compound which is an oxidized dimer of cysteine and is the form in which cysteine often occurs in organic tissue. 〔生化〕胱氨酸，双硫丙氨酸 Chemical formula: C₆H₁₂N₂O₄S₂ Example sentencesExamples - Cysteamine enters the lysosomes by a specific transporter and converts cystine to cysteine and cysteine-cysteamine mixed disulfide.
- Cysteine in the extracellular space is mostly oxidized to cystine.
- Stones can be composed of calcium, oxalate, urate, cystine, xanthine, phosphate, or all of these.
- In 1812, William Hyde Wollaston found a substance in urine that he identified as a cystic oxide, and was later named cystine.
- Zinc is required for the incorporation of cystine into keratin.
- Decomposition of urine containing cystine or pus will have the odor of rotten eggs.
- Glutathione conjugation uses Nacetylcysteine, cysteine, and methionine; cystine is used for sulfation; and glucuronidation requires pantothenic acid.
- The sulfur-containing amino acids are methionine, cysteine, cystine, homocysteine, homocystine, and taurine.
- Once inside a cell, cystine is rapidly reduced to cysteine that, as a precursor of GSH, undergoes GSH synthesis.
- The proteins of soyabean yields all essential amino acids in adequate amounts, except methionine and cystine.
OriginMid 19th century: from Greek kustis ‘bladder’ (because it was first isolated from urinary calculi) + -ine. |