| Description: |
Rabbit monoclonal [EP4863(2)] to Melanoma gp100 |
| Application: |
Suitable for: WB, IHC-P, IP, Flow Cyt (Intra), IA, ICC/IF |
| Purity: |
Protein A purified |
| Shipping: |
Shipped at 4°C. |
| Storage: |
Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle. |
| Storage Buffer: |
Preservative: 0.01% Sodium azide
Constituents: 40% Glycerol, 0.05% BSA, 59% PBS |
| Species Reactivity: |
Reacts with: mouse, human |
| Immunogen: |
Synthetic peptide within Human Melanoma gp100 aa 1-100. The exact sequence is proprietary. |
| Specificity: |
The mouse recommendation is based on the WB results. We do not guarantee IHC-P for mouse. |
| Tissue Specificity: |
Preferentially expressed in melanomas. Some expression was found in dysplastic nevi. Not found in normal tissues nor in carcinomas. Normally expressed at low levels in quiescent adult melanocytes but overexpressed by proliferating neonatal melanocytes and during tumor growth. |
| Clonality: |
Monoclonal |
| Clone Number: |
EP4863(2) |
| Host: |
Rabbit |
| Isotype: |
IgG |
| Formulation: |
Liquid |
| Positive Control: |
WB: B16-F0 (Mouse melanoma epithelial cell-like) whole cell lysate and Human melanoma lysate. IHC: Human melanoma tissue. ICC/IF: B16-F0 (Mouse melanoma epithelial cell-like) cell line. Flow Cyt (intra): B16-F0 (Mouse melanoma epithelial cell-like) cell line. IP: B16-F0 (Mouse melanoma epithelial cell-like) whole cell lysate. |
| Sequence Similarities: |
Belongs to the PMEL/NMB family
Contains 1 PKD domain |
| Domain: |
The RPT domain is essential for the generation of the fibrillar matrix of melanosomes.
The lumenal domain is necessary for correct processing and trafficking to melanosomes. |
| Cellular Localization: |
Secreted and Endoplasmic reticulum membrane. Golgi apparatus. Melanosome. Endosome > multivesicular body. Identified by mass spectrometry in melanosome fractions from stage I to stage IV. Localizes predominantly to intralumenal vesicles (ILVs) within multivesicular bodies. Associates with ILVs found within the lumen of premelanosomes and melanosomes and particularly in compartments that serve as precursors to the striated stage II premelanosomes. |
| Post-translational Modifications: |
A small amount of P1/P100 (major form) undergoes glycosylation to yield P2/P120 (minor form). P2 is cleaved by a furin-like proprotein convertase (PC) in a pH-dependent manner in a post-Golgi, prelysosomal compartment into two disulfide-linked subunits: a large lumenal subunit, M-alpha/ME20-S, and an integral membrane subunit, M-beta. Despite cleavage, only a small fraction of M-alpha is secreted, whereas most M-alpha and M-beta remain associated with each other intracellularly. M-alpha is further processed to M-alpha N and M-alpha C. M-alpha C further undergoes processing to yield M-alpha C1 and M-alpha C3 (M-alpha C2 in the case of PMEL17-is or PMEL17-ls). Formation of intralumenal fibrils in the melanosomes requires the formation of M-alpha that becomes incorporated into the fibrils. Stage II melanosomes harbor only Golgi-modified Pmel17 fragments that are derived from M-alpha and that bear sialylated O-linked oligosaccharides.
N-glycosylated. O-glycosylated; contains sialic acid. |
| Function: |
Plays a central role in the biogenesis of melanosomes. Involved in the maturation of melanosomes from stage I to II. The transition from stage I melanosomes to stage II melanosomes involves an elongation of the vesicle, and the appearance within of distinct fibrillar structures. Release of the soluble form, ME20-S, could protect tumor cells from antibody mediated immunity. |
