• Species Reactivity

  Human

• Specificity

  Detects human MITF in direct ELISAs and Western blots.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  E. coli-derived recombinant human MITF    
  Val119-Lys289    
  Accession # O75030

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  1 µg/mL

  See below

• 
  

• Immunohistochemistry

  5-15 µg/mL

  See below

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Data Examples

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: MITF

MITF (Microphthalmia-associated transcription factor) is a member of the MiT/TFE family of molecules. Although it has a predicted MW of 58 kDa, it runs anomalously in SDS-PAGE at 57‑66 kDa. MITF-A1 is found in melanocytes and RPEs where it regulates melanin synthesis via tyrosinase and TRP-1 gene expression. Human MITF-A1 is 526 amino acids (aa) in length. It contains a bHLH DNA binding region (aa 309‑369) and a Leu-zipper domain (aa 374‑395). There are three phosphorylation sites at Ser54/405/414, and two SUMOylation sites at Arg289/423. MITF-A1 acts as either a homodimer, or heterodimer with TFE3, TFEB or TFEC. Multiple splice variants exist, with each variant expressing one of two isoforms that are defined by the presence (#1), or absence (#2), of aa 294‑299. One variant has a deletion of aa 139‑194, a second has an 11 aa substitution for aa 1‑118, and three others show variable substitutions over aa 1‑35. Over aa 119‑289, human MITF-A1 shares 96% aa identity with mouse MITF-A1.

• Long Name:

  Microphthalmia-associated Transcription Factor

• Entrez Gene IDs:

  4286 (Human); 17342 (Mouse); 25094 (Rat)

• Alternate Names:

  bHLHe32; bHLHe32MI; Class E basic helix-loop-helix protein 32; MI; microphthalmia-associated transcription factor; MITF; Waardenburg syndrome, type 2A; WS2A