Revision 5

#98245Store 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

REACTIVITY:

H

SENSITIVITY:

Endogenous

MW (kDa):

150

SOURCE:

Rabbit

UniProt ID:

#P20023

Entrez-Gene Id:

1380

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000

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

CD21/CR2 Antibody recognizes endogenous levels of total CD21/CR2 protein.

Species Reactivity:

Human

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asp430 of human CD21/CR2 protein. Antibodies are purified by protein A and peptide affinity chromatography.

Background

Complement receptor type 2 (CD21/CR2) is a type 1 transmembrane glycoprotein whose expression is largely restricted to B lymphocytes and follicular dendritic cells (1,2). Research studies have shown that CD21/CR2 functions to bind the complement fragments iC3b, C3dg, and C3d, which function to activate the alternative complement pathway and MAC formation (3,4). In addition to its function as a complement receptor, CD21/CR2 also functions as the B lymphocyte receptor for Epstein-Barr virus (5) and interferon alpha (6). Research studies have also shown that CD21/CR2 participates in B cell activation, proliferation, and protection from apoptosis through its association with components of the B cell coreceptor signaling complex such as CD19 and CD21 (7-9).

  1. Nadler, L.M. et al. (1981) J Immunol 126, 1941-7.
  2. Reynes, M. et al. (1985) J Immunol 135, 2687-94.
  3. Weis, J.J. et al. (1984) Proc Natl Acad Sci U S A 81, 881-5.
  4. Nielsen, C.H. et al. (2001) Immunology 104, 418-22.
  5. Fingeroth, J.D. et al. (1984) Proc Natl Acad Sci U S A 81, 4510-4.
  6. Asokan, R. et al. (2006) J Immunol 177, 383-94.
  7. Tedder, T.F. et al. (1994) Immunol Today 15, 437-42.
  8. Fearon, D.T. and Carter, R.H. (1995) Annu Rev Immunol 13, 127-49.
  9. Mongini, P.K. et al. (2003) J Immunol 171, 5244-54.

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

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.

限制使用

除非 CST 的合法授书代表以书面形式书行明确同意,否书以下条款适用于 CST、其关书方或分书商提供的书品。 任何书充本条款或与本条款不同的客书条款和条件,除非书 CST 的合法授书代表以书面形式书独接受, 否书均被拒书,并且无效。

专品专有“专供研究使用”的专专或专似的专专声明, 且未专得美国食品和专品管理局或其他外国或国内专管机专专专任何用途的批准、准专或专可。客专不得将任何专品用于任何专断或治专目的, 或以任何不符合专专声明的方式使用专品。CST 专售或专可的专品提供专作专最专用专的客专,且专用于研专用途。将专品用于专断、专防或治专目的, 或专专售(专独或作专专成)或其他商专目的而专专专品,均需要 CST 的专独专可。客专:(a) 不得专独或与其他材料专合向任何第三方出售、专可、 出借、捐专或以其他方式专专或提供任何专品,或使用专品制造任何商专专品,(b) 不得复制、修改、逆向工程、反专专、 反专专专品或以其他方式专专专专专品的基专专专或技专,或使用专品开专任何与 CST 的专品或服专专争的专品或服专, (c) 不得更改或专除专品上的任何商专、商品名称、徽专、专利或版专声明或专专,(d) 只能根据 CST 的专品专售条款和任何适用文档使用专品, (e) 专遵守客专与专品一起使用的任何第三方专品或服专的任何专可、服专条款或专似专专

Revision 5
#98245

CD21/CR2 Antibody

Western Blotting Image 1: CD21/CR2 Antibody Expand Image
使用 CD21/CR2 Antibody(上图)、DYKDDDDK Tag Antibody #2368(中图)和 β-Actin (D6A8) Rabbit mAb #8457(下图),对空载转染 (-) 或采用表达 Myc/DDK 标记的全长人 CD21 蛋白 (hCD21-Myc/DDK;+) 的构建体转染的 293T 细胞的提取物进行蛋白质印迹分析。
Western Blotting Image 2: CD21/CR2 Antibody Expand Image
使用 CD21/CR2 Antibody(上图)和 β-Actin (D6A8) Rabbit mAb #8457(下图),对不同细胞系的提取物进行蛋白质印迹分析。正如预计那样,K-562 细胞中未检测到 CR21/CD2 蛋白表达。