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Research Article Free access | 10.1172/JCI115075

A tyrosinase gene missense mutation in temperature-sensitive type I oculocutaneous albinism. A human homologue to the Siamese cat and the Himalayan mouse.

L B Giebel, R K Tripathi, R A King, and R A Spritz

Department of Medical Genetics, University of Wisconsin, Madison 53706.

Find articles by Giebel, L. in: JCI | PubMed | Google Scholar

Department of Medical Genetics, University of Wisconsin, Madison 53706.

Find articles by Tripathi, R. in: JCI | PubMed | Google Scholar

Department of Medical Genetics, University of Wisconsin, Madison 53706.

Find articles by King, R. in: JCI | PubMed | Google Scholar

Department of Medical Genetics, University of Wisconsin, Madison 53706.

Find articles by Spritz, R. in: JCI | PubMed | Google Scholar

Published March 1, 1991 - More info

Published in Volume 87, Issue 3 on March 1, 1991
J Clin Invest. 1991;87(3):1119–1122. https://doi.org/10.1172/JCI115075.
© 1991 The American Society for Clinical Investigation
Published March 1, 1991 - Version history
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Abstract

Type I oculocutaneous albinism (OCA) is an autosomal recessive disorder in which deficient synthesis of melanin pigment results from abnormal activity of melanocyte tyrosinase. A novel type I OCA phenotype in which hypopigmentation is related to local body temperature is associated with a missense substitution in tyrosinase, codon 422 CGG (Arg)----CAG (Gln). This substitution results in a tyrosinase polypeptide that is temperature-sensitive. This form of type I OCA thus is homologous to the temperature-related forms of albinism seen in the Siamese cat and the Himalayan mouse.

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