CLEAVAGE OF CYSTINE BY A PYRIDOXAL MODEL

CLEAVAGE OF CYSTINE BY A PYRIDOXAL MODEL
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DOI:
10.1016/0003-9861(60)90173-9
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发表时间:
1960-01-01
影响因子:
3.9
通讯作者:
MONDOVI, B
MONDOVI, B
中科院分区:
生物学3区
文献类型:
--
作者:
CAVALLINI, D;DEMARCO, C;MONDOVI, B

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在pH 8.5和38[度]催化量的吡哆醛和铜离子存在下,胱氨酸产生氨、丙酮酸、CO2、游离硫、硫代硫酸盐、半胱氨酸亚磺酸、丙氨酸硫代磺酸。当反应中有亚硫酸盐存在时,就会发生转硫反应。丙氨酸-氢二硫化物(硫半胱氨酸)是产生上述一些化合物的中间体。
Cystine in the presence of catalytic amounts of pyridoxal and copper ions at pH 8.5 and 38[degree] produces ammonia, pyruvate, CO2, free sulfur, thiosulfate, cysteine-sulfinic acid, alaninethiosulfonate. Transulfuration occurs when a sulfinate is present in the reaction. Alanine-hydrogen-disulfide (thiocysteine) is the intermediate which produces some of the above compounds.