A NEWLY RECOGNIZED POINT MUTATION IN THE CYTOCHROME-B(558) HEAVY-CHAIN GENE REPLACING ALANINE(57) BY GLUTAMIC-ACID, IN A PATIENT WITH CYTOCHROME-B POSITIVE X-LINKED CHRONIC GRANULOMATOUS-DISEASE

被引:21
作者
ARIGA, T [1 ]
SAKIYAMA, Y [1 ]
TOMIZAWA, K [1 ]
IMAJOHOHMI, S [1 ]
KANEGASAKI, S [1 ]
MATSUMOTO, S [1 ]
机构
[1] UNIV TOKYO,INST MED SCI,TOKYO 108,JAPAN
关键词
X-LINKED CHRONIC GRANULOMATOUS DISEASE; MUTANT CYTOCHROME-B HEAVY CHAIN; POINT MUTATION; MOLECULAR GENETIC ANALYSIS;
D O I
10.1007/BF01955051
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Molecular genetic analysis was performed in a patient with cytochrome b positive X-linked chronic granulomatous disease. A previous Southern blot study, using a cytochrome b heavy chain cDNA as probe, revealed a Pst I restriction fragment pattern for the cytochrome b heavy chain gene (CYBB) different to that of normal individuals. Since restriction length polymorphism with Pst I has never been observed in control individuals and no abnormal restriction fragment patterns in the patient's CYBB was detected with seven other enzymes used, we focussed on the single Pst I site in the CYBB cDNA as being the only mutation site responsible for his disease. A fragment of the patient's cDNA which included the Pst I site was amplified by reverse polymerase chain reaction, and loss of the Pst I site in the fragment was confirmed by incubation with Pst I. Subsequent sequence analysis of the fragment revealed a point mutation in the Pst I site (cytosine to adenine), substituting glutamic acid for alanine at position 57.
引用
收藏
页码:469 / 472
页数:4
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