Cell Signaling Technology

Product Pathways - Cell Cycle / Checkpoint

Microcephalin-1/BRIT1 (D38G5) Rabbit mAb #4120

Applications Reactivity Sensitivity MW (kDa) Isotype
W H M R Mk Endogenous 100 Rabbit IgG

Applications Key:  W=Western Blotting
Reactivity Key:  H=Human  M=Mouse  R=Rat  Mk=Monkey
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

Microcephalin-1/BRIT1 (D38G5) Rabbit mAb detects endogenous levels of total Microcephalin-1/BRIT1 protein.

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to central residues of human Microcephalin-1/BRIT1.

Western Blotting

Western Blotting

Western blot analysis of extracts from various cell types using Microcephalin-1/BRIT1 (D38G5) Rabbit mAb.

Background

Microcephalin-1 (MCPH1)/BRIT1 is an early DNA damage response protein named for its mutated state in the human disease primary microcephaly. BRIT1 forms damage-induced nuclear foci, is involved in DNA damage and cell cycle checkpoints as well as regulation of mitosis. BRIT1 function is necessary for DNA damage responses, and the absence of BRIT1 function leads to genome instability. A potential tumor suppressor, BRIT1 expression is reduced in human carcinomas (1-2, reviewed in 3).BRIT1 colocalizes with other DNA repair proteins (53BP1, MDC1, NBS1, ATM, RPA, and ATR) and is required for their activation (2). BRIT1 likely regulates DNA repair through chromatin remodeling in response to DNA damage, allowing access of repair proteins to DNA (4).

  1. Lin, S.Y. et al. (2005) Proc Natl Acad Sci U S A 102, 15105-9.
  2. Rai, R. et al. (2006) Cancer Cell 10, 145-57.
  3. Chaplet, M. et al. (2006) Cell Cycle 5, 2579-83.
  4. Peng, G. et al. (2009) Nat Cell Biol 11, 865-72.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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