A frequent tyrosinase gene mutation in classic, tyrosinase-negative (type IA) oculocutaneous albinism
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We have identified a tyrosinase gene mutation in several patients with classic, tyrosinase-negative (type IA) oculocutaneous albinism. This mutation, which results in a proline----leucine substitution at codon 81 of the tyrosinase polypeptide (EC 1.14.18.1), was observed in 20% (6 of 30) of oculocutaneous albinism alleles from independent probands, but it was not observed in any normal individuals. This mutation thus appears to be a frequent cause of tyrosinase-negative oculocutaneous albinism.
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At the time of the study, mutations in TYR and SLC45A2 were known to be involved in OCA1 and OCA4, but their contribution to the normal range of skin pigmentation between and within populations was just beginning to be studied.
“At the time of this study, mutations in two of these genes, TYR and SLC45A2, were known to be involved in different forms of oculocutaneous albinism (OCA1 [MIM 203100] and OCA4 [MIM 606574]), 49,50 yet their contribution to the normal range of skin pigmentation between and within populations was just beginning to be studied.”
From A Genomewide Association Study of Skin Pigmentation in a South Asian Population (2007) · cites this paper as [49]
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- Authors
- Giebel, L. B., Strunk, K. M., King, R. A., Hanifin, J. M., & Spritz, R. A.
- Affiliations
- University of Wisconsin–Madison (US)
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 1990-05
- Volume
- 87
- Issue
- 9
- Pages
- 3255-3258
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC53878
- OpenAlex
- W2030721889
- Cited by
- 74
- References
- 16
- Citations by year
- 2022: 1 · 2020: 1 · 2019: 3 · 2018: 2 · 2016: 2 · 2014: 2 · 2013: 1 · 2012: 2
- FWCI
- 5.89
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- March of Dimes Foundation
- National Institutes of Health
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR 39892, R01AR039892)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and rare skin diseases.
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
- Keywords
- melanogenesis
- MeSH terms
- Albinism, Amino Acid Sequence, Base Sequence, Codon, Catechol Oxidase, Female, Genes, Haplotypes, Humans, Genetic Linkage, Male, Molecular Sequence Data, Mutation, Pedigree, Polymorphism, Restriction Fragment Length, Monophenol Monooxygenase, Restriction Mapping, Oligonucleotide Probes, Polymerase Chain Reaction
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