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Email: info@nsjbio.com
- Tel: 858.663.9055
- Email: info@nsjbio.com
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Melanoma gp100 antibody (clone PMEL/2039) detects PMEL17, also known as Melanocyte protein PMEL or premelanosome protein, a pigment-cell glycoprotein that serves as a structural foundation for melanin synthesis within melanosomes. The UniProt recommended name is Melanocyte protein PMEL (PMEL). This integral membrane protein is essential for assembling the internal fibrillar network that defines early melanosome architecture, ultimately supporting pigment accumulation and organelle maturation in melanocytes and melanoma cells.
The PMEL gene, located on chromosome 12q13.2, encodes a type I transmembrane protein that is processed through a tightly regulated maturation pathway. Following translation, PMEL is trafficked through the endoplasmic reticulum and Golgi, where it undergoes heavy glycosylation and proteolytic cleavage. Cleaved fragments aggregate to form amyloid-like fibrils that fill the lumen of immature melanosomes. These fibrils act as templates for melanin polymerization and contribute to the distinct ultrastructural organization of pigment granules. Defects in PMEL processing can result in disrupted melanosome morphology or reduced pigment accumulation.
PMEL expression is controlled by the transcription factor MITF (microphthalmia-associated transcription factor), which coordinates the transcription of multiple melanogenic genes. As a consequence, PMEL17 expression reflects the differentiation state of pigment cells and is retained in most melanocytic lesions, making gp100 a key diagnostic and research marker for melanoma. In normal skin, PMEL localizes to the melanosomal membrane of dendritic melanocytes, while in the eye it is expressed in the retinal pigment epithelium, where it supports proper pigment granule formation and visual function.
Clone PMEL/2039 is a monoclonal antibody developed for the detection of gp100 in mammalian tissue and cell lysates. It recognizes PMEL17 protein in melanocytes and melanoma cells, showing strong selectivity for pigment cell lineages. This clone provides consistent labeling of melanosomal structures and serves as a reliable tool for investigating pigment biogenesis, melanocytic differentiation, and melanoma progression. Its use extends to studies of melanosome dynamics, pigment transfer, and cellular regulation of melanogenesis.
In addition to its structural function, gp100 is recognized as a melanoma-associated antigen that can elicit cytotoxic T-cell responses. It is used experimentally in vaccine design and immunotherapeutic targeting of melanoma. The selective expression of gp100 in melanocytic tissues also allows researchers to differentiate melanoma from non-melanocytic tumors in histological samples. Detection of gp100 contributes to molecular profiling of tumor subtypes and supports research on immune recognition of pigment cell antigens.
Melanoma gp100 antibody (clone PMEL/2039) is suitable for identifying PMEL17 expression in cell and tissue models relevant to pigmentation and melanoma research. NSJ Bioreagents provides Melanoma gp100 antibody (clone PMEL/2039) validated for use in relevant research applications supporting studies of pigment cell biology, melanosome formation, and melanoma immunopathology.
Optimal dilution of the Melanoma gp100 antibody should be determined by the researcher.
A portion of amino acids 376-502 from the human protein was used as the immunogen for the Melanoma gp100 antibody.
Store the Melanoma gp100 antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).
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