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Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IP

REACTIVITY:

H M R

SENSITIVITY:

Endogenous

MW (kDa):

40

SOURCE:

Rabbit

UniProt ID:

#P36952

Entrez-Gene Id:

5268

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunoprecipitation 1:100

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

Maspin (T50) Antibody detects endogenous levels of total maspin protein.

Species Reactivity:

Human, Mouse, Rat

Species predicted to react based on 100% sequence homology

Monkey

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Thr50 of human maspin. Antibodies were purified by peptide affinity chromatography.

Background

Maspin (SERPINB5) was discovered as a mammary tumor suppressor that is expressed in normal mammary epithelium but lost in most breast cancer cell lines (1). While maspin is related to the serpin family of serine protease inhibitors, it may not function as a protease inhibitor (2). It plays an essential role in embryonic development through critical roles in cell adhesion (3). While the precise mechanism of maspin signaling is unclear (4), the tumor suppressing activity of maspin has been attributed to its ability to inhibit cell invasion/metastasis (5,6) and angiogenesis (7), while promoting apoptosis (8). Nuclear translocation of active IKKα has been shown to repress maspin transcription and promote prostate cancer metastasis (9).

  1. Zou, Z. et al. (1994) Science 263, 526-9.
  2. Pemberton, P.A. et al. (1995) J Biol Chem 270, 15832-7.
  3. Gao, F. et al. (2004) Development 131, 1479-89.
  4. Bailey, C.M. et al. (2006) J Cell Physiol 209, 617-24.
  5. Sheng, S. et al. (1996) Proc Natl Acad Sci USA 93, 11669-74.
  6. Seftor, R.E. et al. (1998) Cancer Res 58, 5681-5.
  7. Zhang, M. et al. (2000) Nat Med 6, 196-9.
  8. Jiang, N. et al. (2002) Oncogene 21, 4089-98.
  9. Luo, J.L. et al. (2007) Nature 446, 690-4.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Western Blot Buffer

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 5% w/v BSA, 1X TBS, 0.1% Tween® 20 at 4°C with gentle shaking, overnight.

Applications Key

WB: Western Blotting IP: Immunoprecipitation

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

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