首页> 外文期刊>Pigment cell research >An oxygen transporter hemocyanin can act on the late pathway of melanin synthesis
【24h】

An oxygen transporter hemocyanin can act on the late pathway of melanin synthesis

机译:氧转运蛋白血蓝蛋白可以作用于黑色素合成的晚期途径

获取原文
获取原文并翻译 | 示例
       

摘要

5,6-Dihydroxyindole (DHI) and 5,6-dihydroxyindole-2-carboxylic acid (DHICA) are precursors of eumelanin. The effects of crustacean hemolymph proteins on these eumelanin-related metabolites were investigated. Zymogram analysis indicated that polymers of hemocyanin (Hc) subunits converted DHI into black pigment while no effects were observed using DHICA as a substrate. Spectrum changes for mixtures of purified Hc and DHI showed a profile similar to oxidized DHI by mushroom tyrosinase while Hc had only slight effects on DHICA. Typical inhibitors of tyrosinase and phenoloxidase severely hampered the production of oxidized DHI. Taken together with previous results, these data indicate that Hc plays a crucial role in the conversion of DHI in the hemolymph of crustaceans, which promotes late reactions in the melanin synthetic pathway as well as early reactions (oxidation of tyrosine and DOPA to dopaquinone).
机译:5,6-二羟基吲哚(DHI)和5,6-二羟基吲哚-2-羧酸(DHICA)是Eumelanin的前体。研究了甲壳类血淋巴蛋白对这些与Eumelanin相关的代谢产物的影响。波形图分析表明,血红蛋白(Hc)亚基的聚合物将DHI转化为黑色素,而使用DHICA作为底物则未观察到任何影响。纯化的Hc和DHI混合物的光谱变化显示出与蘑菇酪氨酸酶氧化的DHI相似的曲线,而Hc对DHICA的影响很小。酪氨酸酶和酚氧化酶的典型抑制剂严重阻碍了氧化DHI的产生。结合先前的结果,这些数据表明,Hc在甲壳类动物的血淋巴中的DHI转化中起关键作用,这促进了黑色素合成途径中的晚期反应以及早期反应(酪氨酸和DOPA氧化为多巴醌)。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号