Antibodies Primary

Microphthalmia Transcription Factor

Mouse anti Human Microphthalmia Transcription Factor (MiTF)

Article No




Species Reactivity



100 µg



Source / Host


Shipping Information

Ship at ambient temperature, freeze upon arrival


Application GSA, WB, IP, IHC
Article No 303-X2397M
Country Availability SE, FI, DK, NO, EE, LV, LT
Clone D5
Clone Type monoclonal
Concentration See vial for concentration
Conjugation Unconjugated
Control Tissue 501 Mel human melanoma cells, wild-type human, rat, mouse osteoclast cells
Description Mouse anti Human Microphthalmia Transcription Factor (MiTF)
Supplier Exalpha Biologicals
Immunogen Hybridoma produced by the fusion of splenocytes from RBF/DnJ mice immunized with an N-terminal fragment of human microphthalmia protein and mouse myeloma NS1 cells.
Isotype IgG1
Notes In Western blotting, it recognizes a doublet of 52-56kDa, identified as serine-phosphorylated and unphosphorylated forms of melanocytic isoforms of microphthalmia (Mi) transcription factor. There are two known isoforms of MiTF differing by 66 amino acids at the NH2 terminus. Shorter forms are expressed in melanocytes and run as two bands at 52kDa and 56kDa, while the longer Mi form runs as a cluster of bands at 60-70kDa in osteoclasts and in B16 melonoma cells (but not other melanoma cell lines), as well as mast cells and heart. It reacts with both melanocytic as well as the non- melanocytic isoforms of MiTF. This Ab does not cross-react with other b-HLH-ZIP factors by DNA mobility shift assay. Mi is a basic helix-loop-helix-leucin zipper (b-HLH-ZIP) transtripotion factor implicated in pigmentation, mast cells and bone development. The mutation of MiTF causes Waardenburg Syndrome type II in humans. In mice, a profound loss of pigmented cells in the skin eye and inner ear results, as well as osteopetrosis and defects in natural killer and mast cells. These melanocyte isoforms have been shown by two dimensional tryptic mapping to differ in c-Kit-induced phosphorylation. Osteopetrotic rat strain harbors a large genomic deletion encompassing the 3Õ half of MiTF including most of the b-HLH-ZIP region. Osteoclasts from these animals lack MiTF protein in contrast to wild-type rat, mouse, and human osteoclasts.
Alias Names MiTF
Product Type Antibodies Primary
Purification Protein A/G Chromatography
References 1. Weilbaecher KN, et. al. Age-resolving osteopetrosis: a rat model implicating microphthalmia and the related transcription factor TFE3. J. Exp.Med. 1998, 187: 775-785 2. Hemesath P, et. al. MAP kinase links the transcription factor microphthalmia to c-Kit signalling in melanocytes. Nature. 1998, 391:298-301
Research Area Cell Signaling
Shipping Information Ship at ambient temperature, freeze upon arrival
Size 100 µg
Source / Host mouse
Species Reactivity human, dog/canine
Storage Product should be stored at -20ºC. Aliquot to avoid freeze/thaw cycles
Substrate / Buffer Provided as solution in phosphate buffered saline with 0.08% sodium azide
Technical Specifications This antibody can be used for gel supershift assays, immunoprecipitation (2 µg/mg of protein lysate), Western blotting (1 µg/ml) and immunohistochemistry on frozen and formalin/paraffin tissue sections. Optimal concentration should be evaluated by serial dilutions.
UniProt Number O75030
Product Page Updated 2019-01-09T10:09:28.847Z

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