A NOVEL PROTEIN ASSAY-METHOD USING TETRAPHENYLPORPHIN TETRASULFONATE (TPPS4)

被引:41
作者
LI, N
LI, KA
TONG, SY
机构
[1] Department of Chemistry, Peking University, Beijing
关键词
PROTEIN ASSAY; TETRAPHENYLPORPHIN TETRASULFONATE; STAINING; SPECTROPHOTOMETRY;
D O I
10.1080/00032719508000354
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A sensitive protein assay method which involves the reaction of TPPS4 with protein is described. When protein is added to TPPS4 solution, an absorption band with the maximum at 488 nm appears and the absorbance is proportional to the concentration of protein. Just Like the Soret absorption of the porphyrin, the new band is very narrow and there is no overlap at all between them, which means the free dyes would not give any background for the detection of the protein-TPPS4 complexes. A new spectrophotometric method for determination of protein has been constructed and applied to the determination of human plasma protein and urinary protein; The assay using microtiter plates has also been studied.
引用
收藏
页码:1763 / 1774
页数:12
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