Revision 5

#28192Store at -20C

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, IHC-P

REACTIVITY:

H M R

SENSITIVITY:

Endogenous

MW (kDa):

10

Source/Isotype:

Rabbit IgG

UniProt ID:

#P04271

Entrez-Gene Id:

6285

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000
Immunohistochemistry (Paraffin) 1:800 - 1:3200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

For a carrier free (BSA and azide free) version of this product see product #30683.

Specificity / Sensitivity

S100B (E9F2I) Rabbit mAb recognizes endogenous levels of total S100B protein. This antibody recognizes mouse S100B protein and is also reactive with human S100B; however, this antibody is not suggested for immunohistochemical analysis of human tissues.

Species Reactivity:

Human, Mouse, Rat

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding His86 of human S100B protein.

Background

Despite their relatively small size (8-12 kDa) and uncomplicated architecture, S100 proteins regulate a variety of cellular processes, such as cell growth and motility, cell cycle progression, transcription, and differentiation. To date, 25 members have been identified, including S100A1-S100A18, trichohyalin, filaggrin, repetin, S100P, and S100Z, making it the largest group in the EF-hand, calcium-binding protein family. Interestingly, 14 S100 genes are clustered on human chromosome 1q21, a region of genomic instability. Research studies have demonstrated that significant correlation exists between aberrant S100 protein expression and cancer progression. S100 proteins primarily mediate immune responses in various tissue types but are also involved in neuronal development (1-4).

Each S100 monomer bears two EF-hand motifs and can bind up to two molecules of calcium (or other divalent cation in some instances). Structural evidence shows that S100 proteins form antiparallel homo- or heterodimers that coordinate binding partner proximity in a calcium-dependent (and sometimes calcium-independent) manner. Although structurally and functionally similar, individual members show restricted tissue distribution, are localized in specific cellular compartments, and display unique protein binding partners, which suggests that each plays a specific role in various signaling pathways. In addition to an intracellular role, some S100 proteins have been shown to act as receptors for extracellular ligands or are secreted and exhibit cytokine-like activities (1-4).

S100B is abundantly expressed in astrocytes and is commonly used as an astrocytic marker in studies of the mammalian CNS. S100B is also expressed in immature and mature myelinating oligodendrocytes that are chondroitin sulfate proteoglycan (NG2)-positive (5).

  1. Heizmann, C.W. et al. (2002) Front Biosci 7, d1356-68.
  2. Donato, R. (2003) Microsc Res Tech 60, 540-51.
  3. Marenholz, I. et al. (2004) Biochem Biophys Res Commun 322, 1111-22.
  4. Santamaria-Kisiel, L. et al. (2006) Biochem J 396, 201-14.
  5. Hachem, S. et al. (2005) Glia 51, 81-97.

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 IHC-P: Immunohistochemistry (Paraffin)

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

使用に関する制限

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Revision 5
#28192

S100B (E9F2I) Rabbit mAb

Western Blotting Image 1: S100B (E9F2I) Rabbit mAb Expand Image
Western blot analysis of extracts from various cell lines using S100B (E9F2I) Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Western Blotting Image 2: S100B (E9F2I) Rabbit mAb Expand Image
Western blot analysis of extracts from various tissues using S100B (E9F2I) Rabbit mAb (upper) and β-Actin (D6A8) Rabbit mAb #8457 (lower).
Immunohistochemistry Image 1: S100B (E9F2I) Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse brain using S100B (E9F2I) Rabbit mAb.
Immunohistochemistry Image 2: S100B (E9F2I) Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse colon using S100B (E9F2I) Rabbit mAb.
Immunohistochemistry Image 3: S100B (E9F2I) Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse oviduct using S100B (E9F2I) Rabbit mAb.
Immunohistochemistry Image 4: S100B (E9F2I) Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse brain (left) and brown fat with adjacent nerve (right) using S100B (E9F2I) Rabbit mAb (top) or S100B Rabbit mAb (bottom). These two antibodies detect unique, non-overlapping epitopes on S100B protein. The similar staining patterns obtained with both antibodies help to confirm the specificity of the staining.
Immunohistochemistry Image 5: S100B (E9F2I) Rabbit mAb Expand Image
Immunohistochemical analysis of paraffin-embedded mouse cerebellum using S100B (E9F2I) Rabbit mAb (left) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (right).