Melanin is a complex polymer derived from the amino acid tyrosine. Melanin is responsible for determining skin and hair colour and is present in the skin to varying degrees, depending on how much a population has been exposed to the sun historically. Numerous steps are involved in the biosynthesis of melanin. Melanism refers to the deposition of melanin in the tissues of living animals. The chemistry of the process depends on the metabolism of the amino acid tyrosine, the absence of which results in albinism, or lack of pigmentation. Melanism can also occur pathologically, as in a malignant melanoma, a cancerous tumour composed of melanin-pigmented cells.The first step is catalysis of the chemical L-3,4-dihydroxyphenylalanine by tyrosinase. A lack of tyrosine can lead to albinism. Tyrosine is only found in a specialized cells called melanocytes, inside which tiny granules of melanin pigment are contained in vesicles called melanosomes.
Last Updated on: Nov 23, 2024List of Open Access Journals View More
Journal of Medical Sciences and Health Care Research
Journal primary objective is to provide research and applications related to Medical & Health Sciences. This journal strives to serve a diverse readership by publishing articles in a wide range of topics. This journal will welcome articles from the field of all specialities medical science that includes feilds like medicine...View More
Journal of Molecular Genetics and Gene Research
Journal of Molecular Genetics and Gene Research is a peer reviewed scientific journal known for rapid dissemination of high-quality research. It serves the International Scientific Community with its standard research publications. This journal is using Online Manuscript Management system...View More
Reviews in Pharmacy and Pharmaceutical Sciences
Reviews in Pharmacy and Pharmaceutical sciences is a peer-reviewed scholarly journal that aims to publish high quality research on Pharmacology and Toxicology, Pharmaceutical Chemistry, Pharmaceutical Analysis and Quality Assurance, Pharmaceutics, Hospital and Clinical Pharmacy...View More
Dermatology Case Reports: Open Access Journal
DCROAJ welcome authors to contribute current research and reports, clinical studies, review articles, short communication, editorial, letter to editor, survey reports submission of manuscripts related to devices in dermatology, dermatology studies, new technology in dermatology, biological materials, venereology, leprology etc....View More
International Journal of Quantum Technologies
International Journal of Quantum Technologies publishes original, current research, novel methods, advancing research on quantum optics, modern quantum physics, quantum computing, Quantum electromechanical systems and quantum metrology, etc. strategies that will drive positive change in the worldwide....View More
Department of Applied Food and Nutrition Journal
DAFNJ is a scholarly open access peer-reviewed journal aim to publish be valuable source of information both clinical, experimental and theoretical in field of Food science, Food policy and Nutrition....View More