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 06, 2024List of Open Access Journals View More
Clinical Trials and Medical Case Reports
Clinical trials and Medical Case reports is an open access peer reviewed journal. It publishes Clinical trials, Medical case reports and Medical images from all fields of medicine in all orders by which medicinal services experts, specialists and others can easily understand the disease conditions...View More
Health and Preventive Medicine Journal
Health and Preventive Medicine Journal (HPMJ) is a scholarly open access peer-reviewed journal aim to publish be valuable source of information both experimental and theoretical in field of Health science, Epidemiology, Health management and Preventive medicine...View More
Review of Cell Science Journal
RCSJ welcome researchers, pharma companies, professors, scientists, biologists, biotechnologists, immunologists, stem cell researchers, clinical scientists, molecular biologists to contribute current research work to the scientific world....View More
International Journal of Catalysis and Chemical Engineering
International Journal of Catalysis and Chemical Engineering (IJCCE) is a scholarly open access per-reviewed journal aim to publish be valuable source of information in field of Chemical Engineering, Catalysis, Catalytic Materials & Mechanisms, Nanocatalysis....View More
Journal of Rehabilitation Research Current Updates
JRRCU publishes original, current research, clinical studies, novel methods, advancing concepts on Orthopaedics, Geriatric, Trauma, Neuropsychological Rehabilitation, Palliative care, psychology, etc....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