Revision 1
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:

Vir

SENSITIVITY:

Endogenous

MW (kDa):

110, 220

Source/Isotype:

Mouse IgG1 kappa

UniProt ID:

#P0DTC2

Entrez-Gene Id:

43740568

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, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Specificity / Sensitivity

SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb recognizes endogenous levels of total SARS-CoV-2 spike protein. This antibody detects full-length protein, and also detects the S1 fragment generated by furin cleavage. It does not cross-react with spike proteins from SARS or MERS coronaviruses.

Species Reactivity:

Virus

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ser459 of SARS-CoV-2 spike protein.

Background

The cause of the COVID-19 pandemic is a novel and highly pathogenic coronavirus, termed SARS-CoV-2 (severe acute respiratory syndrome coronavirus-2). SARS-CoV-2 is a member of the Coronaviridae family of viruses (1). The genome of SARS-CoV-2 is similar to other coronaviruses, and is comprised of four key structural proteins: S, the spike protein, E, the envelope protein, M, the membrane protein, and N, the nucleocapsid protein (2). Coronavirus spike proteins are class I fusion proteins and harbor an ectodomain, a transmembrane domain, and an intracellular tail (3,4). The highly glycosylated ectodomain projects from the viral envelope surface and facilitates attachment and fusion with the host cell plasma membrane. The ectodomain can be further subdivided into host receptor-binding domain (RBD) (S1) and membrane-fusion (S2) subunits, which are produced upon proteolysis by host proteases at S1/S2 and S2’ sites. S1 and S2 subunits remain associated after cleavage and assemble into crown-like homotrimers (2,4). In humans, both SARS-CoV and SARS-CoV-2 spike proteins utilize the angiotensin-converting enzyme 2 (ACE2) protein as a receptor for cellular entry (5-7). Spike protein subunits represent a key antigenic feature of coronavirus virions, and therefore represent an important target of vaccines, novel therapeutic antibodies, and small-molecule inhibitors (8,9).

  1. Zhou, P. et al. (2020) Nature 579, 270-3.
  2. Tortorici, M.A. and Veesler, D. (2019) Adv Virus Res 105, 93-116.
  3. Li, F. et al. (2006) J Virol 80, 6794-800.
  4. Li, F. (2016) Annu Rev Virol 3, 237-61.
  5. Shang, J. et al. (2020) Nature 581, 221-4.
  6. Wrapp, D. et al. (2020) Science 367, 1260-3.
  7. Yan, R. et al. (2020) Science 367, 1444-8.
  8. Yuan, Y. et al. (2017) Nat Commun 8, 15092.
  9. Amanat, F. and Krammer, F. (2020) Immunity 52, 583-9.

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.
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.

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 1
#69323

SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb

Western Blotting Image 1: SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb Expand Image
使用 SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb(上图)和 GAPDH (D16H11) XP® Rabbit mAb #5174(下图)对模拟感染的 Vero-E6 细胞(泳道 1)、SARS-CoV-2 感染的 Vero-E6 细胞(泳道 2)、分离的 SARS-CoV-2 病毒体(泳道 3)的提取物进行蛋白质印迹分析。该抗体可检测全长(未裂解)SARS-CoV-2 刺突蛋白,以及与内源蛋白酶裂解产生的 S1 域相对应的片段。SARS-CoV-2 病毒体和 SARS-CoV-2 感染的 Vero-E6 细胞由波士顿大学国家新兴传染病实验室 Mohsan Saeed 博士提供。
Western Blotting Image 2: SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb Expand Image
使用 SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb(上图)、Myc-Tag (71D10) Rabbit mAb #2278(中图)和 GAPDH (D16H11) XP® Rabbit mAb #5174(下图),对转染空载(泳道 1)或瞬时转染带表达载体编码 Myc/DDK 标记的 SARS-CoV-2 Spike(泳道2)、Myc/DDK 标记 SARS-CoV Spike(泳道 3)或 Myc/DDK 标记的 MERS-CoV Spike (泳道4)的 293T 细胞提取物进行蛋白质印迹分析。该抗体可检测全长(未裂解)SARS-CoV-2 刺突蛋白,以及与内源蛋白酶裂解产生的 S1 域相对应的片段。在这些实验条件下(瞬时转染)未观察到 SARS-CoV 刺突蛋白的蛋白水解裂解。
Western Blotting Image 3: SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb Expand Image
使用 SARS-CoV-2 Spike Protein (RBD) (E2T6M) Mouse mAb(上图)和 His-Tag (D3I1O) XP® Rabbit mAb #12698(下图)对纯化的 SARS-CoV-2 Spike RBD (318-541) Recombinant Protein (8xHis-Tag) #48801(lane 1)、SARS-CoV-2 Spike RBD (multimeric) (319-591) Recombinant Protein (8xHis-Tag) #17862 (lane 2)、SARS-CoV-2 Spike (trimeric) (16-1208) Recombinant Protein (8xHis-Tag) #65444 (lane 3) 和 SARS-CoV-2 Spike S1-NTD (16-316) Recombinant Protein (8xHis-Tag) #88587 (lane 4) 进行蛋白质印迹分析。由于表位的位置(SARS-CoV-2 刺突蛋白的 Ser459 周围),该抗体检测到与 SARS CoV-2 刺突全长胞外域和受体结合结构域(RBD)相对应的重组蛋白,但不能检测到仅对应于 SARS-CoV-2 S1 氨基末端结构域(S1-NTD)的重组蛋白。