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45262
Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb
Secondary Antibodies
Secondary Antibody

Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb #45262

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  1. WB
Western Blotting Image 1: Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb

Immunoprecipitation of PRAS40 from untreated HeLa cell extracts. Lane 1 is 10% input, lane 2 is Rabbit (DA1E) mAb IgG XP® Isotype Control #3900, and lane 3 is PRAS40 (D23C7) Rabbit mAb #2691. All lanes are probed with PRAS40 (D23C7) Rabbit mAb as the primary antibody. Secondary antibodies include Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb (left panel) and Anti-rabbit IgG, HRP-linked Antibody #7074 (right panel). For the left panel, the bound Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb was detected by Anti-mouse IgG, HRP-linked Antibody #7076. The positions of the reduced and denatured rabbit IgG heavy and light chains are indicated.

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Supporting Data

REACTIVITY
SENSITIVITY
MW (kDa)
Source/Isotype Mouse 

Application Key:

  • W-Western
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • IF-Immunofluorescence
  • F-Flow Cytometry
  • E-P-ELISA-Peptide

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • 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
  • All-All Species Expected

Product Usage Information

Recommended Antibody Dilution:

1:2000

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.

Protocol

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Western Immunoblotting Protocol (for Light-Chain Specific Secondary Antibodies)

For western blots, incubate membrane with diluted primary antibody in either 5% w/v BSA or nonfat dry milk, 1X TBS, 0.1% Tween-20 at 4°C with gentle shaking, overnight.

NOTE: Please refer to primary antibody product webpage for recommended Primary Antibody Dilution Buffer and recommended antibody dilution.

A. Solutions and Reagents

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. 20X Phosphate Buffered Saline (PBS): (#9808) To prepare 1 L 1X PBS: add 50 ml 20X PBS to 950 ml dH2O, mix.
  2. 10X Tris Buffered Saline (TBS): (#12498) To prepare 1 L 1X TBS: add 100 ml 10X to 900 ml dH2O, mix.
  3. 1X SDS Sample Buffer: Blue Loading Pack (#7722) or Red Loading Pack (#7723) Prepare fresh 3X reducing loading buffer by adding 1/10 volume 30X DTT to 1 volume of 3X SDS loading buffer. Dilute to 1X with dH2O.
  4. 10X Tris-Glycine SDS Running Buffer: (#4050) To prepare 1 L 1X running buffer: add 100 ml 10X running buffer to 900 ml dH2O, mix.
  5. 10X Tris-Glycine Transfer Buffer: (#12539) To prepare 1 L 1X Transfer Buffer: add 100 ml 10X Transfer Buffer to 200 ml methanol + 700 ml dH2O, mix.
  6. 10X Tris Buffered Saline with Tween® 20 (TBST): (#9997) To prepare 1 L 1X TBST: add 100 ml 10X TBST to 900 ml dH2O, mix.
  7. Nonfat Dry Milk: (#9999).
  8. Blocking Buffer: 1X TBST with 5% w/v nonfat dry milk; for 150 ml, add 7.5 g nonfat dry milk to 150 ml 1X TBST and mix well.
  9. Wash Buffer: (#9997) 1X TBST.
  10. Bovine Serum Albumin (BSA): (#9998).
  11. Primary Antibody Dilution Buffer: 1X TBST with 5% BSA; for 20 ml, add 1.0 g BSA to 20 ml 1X TBST and mix well.
  12. Biotinylated Protein Ladder Detection Pack: (#7727).
  13. Prestained Protein Marker, Broad Range (Premixed Format): (#7720).
  14. Blotting Membrane and Paper: (#12369) This protocol has been optimized for nitrocellulose membranes. Pore size 0.2 µm is generally recommended.
  15. Mouse Anti-Rabbit IgG (Light-Chain Specific) mAb.
  16. Secondary Antibody Conjugated to HRP: Anti-mouse IgG, HRP-linked Antibody (#7076).
  17. Detection Reagent: SignalFire™ ECL Reagent (#6883).

B. Protein Blotting

A general protocol for sample preparation is described below.

  1. Treat cells by adding fresh media containing regulator for desired time.
  2. Aspirate media from cultures; wash cells with 1X PBS; aspirate.
  3. Lyse cells by adding 1X SDS sample buffer (100 μl per well of 6-well plate or 500 μl per plate of 10 cm diameter plate). Immediately scrape the cells off the plate and transfer the extract to a microcentrifuge tube. Keep on ice.
  4. Sonicate for 10–15 seconds for complete cell lysis and to shear DNA (to reduce sample viscosity).
  5. Heat a 20 μl sample to 95–100°C for 5 minutes; cool on ice.
  6. Microcentrifuge for 5 minutes.
  7. Load 20 μl onto SDS-PAGE gel (10 cm x 10 cm). NOTE: CST recommends loading prestained molecular weight markers (#7720, 10 μl/lane) to verify electrotransfer and biotinylated protein ladder (#7727, 10 μl/lane) to determine molecular weights.
  8. Electrotransfer to nitrocellulose or PVDF membrane.

C. Membrane Blocking and Antibody Incubations

NOTE: Volumes are for 10 cm x 10 cm (100 cm2) of membrane; for different sized membranes, adjust volumes accordingly.

I. Membrane Blocking

  1. (Optional) After transfer, wash nitrocellulose membrane with 25 ml TBS for 5 minutes at room temperature.
  2. Incubate membrane in 25 ml of blocking buffer for one hour at room temperature.
  3. Wash three times for 5 minutes each with 15 ml of TBS/T.

II. Primary Antibody Incubation

  1. Incubate membrane and primary antibody (at the appropriate dilution as recommended in the product webpage) in 10 ml primary antibody dilution buffer with gentle agitation overnight at 4°C.
  2. Wash three times for 5 minutes each with 15 ml of TBS/T.
  3. Incubate membrane with Mouse anti-Rabbit IgG (Light-Chain Specific) mAb (1:2000) in 10 ml of blocking buffer with gentle agitation for 1 hour at room temperature.
  4. Wash three times for 5 minutes each with 15 ml of TBS/T.
  5. Incubate membrane with Anti-mouse IgG, HRP-linked antibody (#7076) (1:2000) and Anti-biotin, HRP-linked Antibody (#7075) (1:1000) to detect biotinylated protein markers in 10 ml of blocking buffer with gentle agitation for one hour at room temperature.
  6. Wash three times for 5 minutes each with 15 ml of TBS/T.
  7. Proceed to detection step in section D.

D. Detection of Proteins

Directions for Use:

  1. Wash membrane-bound HRP (antibody conjugate) three times for 5 minutes in TBST.
  2. Prepare 1X SignalFire™ ECL Reagent (#6883) by diluting one part 2X Reagent A and one part 2X Reagent B (e.g. for 10 ml, add 5 ml Reagent A and 5 ml Reagent B). Mix well.
  3. Incubate substrate with membrane for 1 minute, remove excess solution (membrane remains wet), wrap in plastic and expose to X-ray film.

* Avoid repeated exposure to skin.

posted June 2009

revised June 2020

Protocol Id: 29

Specificity / Sensitivity

Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb recognizes the light chain of rabbit IgG, either in its native conformation or in its denatured and reduced form. It does not bind to the denatured and reduced rabbit IgG heavy chain (about 50 kDa) on western blot.

Source / Purification

Monoclonal antibody is produced by immunizing animals with native total rabbit IgG.

Background

Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb only reacts with the light chain of rabbit IgG and does not bind to the denatured and reduced rabbit IgG heavy chain. When performing immunoprecipitation (IP) followed by western blotting, the denatured rabbit IgG heavy chain of the primary antibody used for IP runs at approximately 50 kDa on the subsequent western blot and can often obscure bands of proteins that have a similar molecular weight. Using Mouse Anti-rabbit IgG (Light-Chain Specific) (D4W3E) mAb as a secondary antibody will eliminate this problem.

使用に関する制限

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研究専用 (For Research Use Only) またはこれに類似する表示がされた製品は、 いかなる目的についても FDA または外国もしくは国内のその他の規制機関により承認、認可または許可を受けていません。 お客様は製品を診断もしくは治療目的で使用してはならず、また、製品に表示された内容に違反する方法で使用してはなりません。 CST が販売または使用許諾する製品は、エンドユーザーであるお客様に対し、使途を研究および開発のみに限定して提供されるものです。 診断、予防もしくは治療目的で製品を使用することまたは製品を再販売 (単独であるか他の製品等の一部であるかを問いません) もしくはその他の商業的利用の目的で購入することについては、CST から別途許諾を得る必要があります。 お客様は以下の事項を遵守しなければなりません。(a) CST の製品 (単独であるか他の資材と一緒であるかを問いません) を販売、使用許諾、貸与、寄付もしくはその他の態様で第三者に譲渡したり使用させたりしてはなりません。また、商用の製品を製造するために CST の製品を使用してはなりません。(b) 複製、改変、リバースエンジニアリング、逆コンパイル、 分解または他の方法により製品の構造または技術を解明しようとしてはなりません。また、 CST の製品またはサービスと競合する製品またはサービスを開発する目的で CST の製品を使用してはなりません。(c) CST の製品の商標、商号、ロゴ、特許または著作権に関する通知または表示を除去したり改変したりしてはなりません。(d) CST の製品をCST 製品販売条件(CST’s Product Terms of Sale) および該当する書面のみに従って使用しなければなりません。(e) CST の製品に関連してお客様が使用する第三者の製品またはサービスに関する使用許諾条件、 サービス提供条件またはこれに類する合意事項を遵守しなければなりません。

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