Cat. # | Size | Price | Inventory |
---|---|---|---|
53108T | 20 µl | ||
53108S | 100 µl |
REACTIVITY | H M |
SENSITIVITY | Endogenous |
MW (kDa) | 140 |
Source/Isotype | Rabbit IgG |
Product Information
Application | Dilution |
---|---|
Western Blotting | 1:1000 |
Immunoprecipitation | 1:50 |
IHC Leica Bond | 1:200 |
Immunohistochemistry (Paraffin) | 1:400 |
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.
NOTE: Please refer to primary antibody product webpage for recommended antibody dilution.
From sample preparation to detection, the reagents you need for your Western Blot are now in one convenient kit: #12957 Western Blotting Application Solutions Kit
NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.
Load 20 µl onto SDS-PAGE gel (10 cm x 10 cm).
NOTE: Loading of prestained molecular weight markers (#59329, 10 µl/lane) to verify electrotransfer and biotinylated protein ladder (#7727, 10 µl/lane) to determine molecular weights are recommended.
NOTE: Volumes are for 10 cm x 10 cm (100 cm2) of membrane; for different sized membranes, adjust volumes accordingly.
* Avoid repeated exposure to skin.
posted June 2005
revised June 2020
Protocol Id: 10
This protocol is intended for immunoprecipitation of native proteins for analysis by western immunoblot or kinase activity utilizing Protein A magnetic separation.
NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.
10X Cell Lysis Buffer: (#9803) To prepare 10 ml of 1X cell lysis buffer, add 1 ml cell lysis buffer to 9 ml dH2O, mix.
NOTE: Add 1 mM PMSF (#8553) immediately prior to use.
A cell lysate pre-clearing step is highly recommended to reduce non-specific protein binding to the Protein A Magnetic beads. Pre-clear enough lysate for test samples and isotype controls.
IMPORTANT: Pre-wash #73778 magnetic beads just prior to use:
Carefully remove the buffer once the solution is clear. Add 500 μl of 1X cell lysis buffer to the magnetic bead pellet, briefly vortex to wash the beads. Place tube back in magnetic separation rack. Remove buffer once solution is clear. Repeat washing step once more.
IMPORTANT: The optimal lysate concentration will depend on the expression level of the protein of interest. A starting concentration between 250 μg/ml-1.0 mg/ml is recommended.
IMPORTANT: Appropriate isotype controls are highly recommended in order to show specific binding in your primary antibody immunoprecipitation. Use Normal Rabbit IgG #2729 for rabbit polyclonal primary antibodies, Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 for rabbit monoclonal primary antibodies, Mouse (G3A1) mAb IgG1 Isotype Control #5415 for mouse monoclonal IgG1 primary antibodies, Mouse (E5Y6Q) mAb IgG2a Isotype Control #61656 for mouse monoclonal IgG2a primary antibodies, Mouse (E7Q5L) mAb IgG2b Isotype Control #53484 for mouse monoclonal IgG2b primary antibodies, and Mouse (E1D5H) mAb IgG3 Isotype Control #37988 for mouse monoclonal IgG3 primary antibodies. Isotype controls should be concentration matched and run alongside the primary antibody samples.
Proceed to one of the following specific set of steps.
NOTE: To minimize masking caused by denatured IgG heavy chains (~50 kDa), we recommend using Mouse Anti-Rabbit IgG (Light-Chain Specific) (D4W3E) mAb (#45262) or Mouse Anti-Rabbit IgG (Conformation Specific) (L27A9) mAb (#3678) (or HRP conjugate #5127). To minimize masking caused by denatured IgG light chains (~25 kDa), we recommend using Mouse Anti-Rabbit IgG (Conformation Specific) (L27A9) mAb (#3678) (or HRP conjugate #5127).
posted December 2008
revised April 2021
Protocol Id: 410
NOTE: Please see product datasheet or product webpage for appropriate antibody dilution^.
Step | Reagents | Time/Temperature | |
---|---|---|---|
1 | Dewax | BOND™ Dewax Solution, 100% Alcohol, BOND™ Wash Solution | Pre-programmed Leica® BOND™ |
2 | Antigen Retrieval | BOND™ Epitope Retrieval ER2 Solution | 20 min., 100˚C | Protocol: HIER 20 min with ER2 |
3 | Peroxide Block | Refine Detection Kit Peroxide Block* | 5 min. |
WASH | BOND™ Wash Solution | 3x 0:00 min. | |
4 | Protein Block (optional) | #5425 NGS or #15019 Animal-Free Blocking Solution | 20 min. |
5 | Primary Antibody^ | Dilute in #8112 SignalStain® Antibody Diluent | 30 min. |
WASH | BOND™ Wash Solution | 3x 2:00 min. | |
NA | Post Primary Mouse Linker | Refine Detection Kit Post Primary* | Not Applied |
6 | Secondary Detection | Refine Detection Kit Polymer* | 10 min. |
WASH | BOND™ Wash Solution/Deionized Water | Custom (see below) | |
7a | Visualization | Refine Detection Kit Mixed DAB Refine* | 0:00 min. |
7b | Visualization | Refine Detection Kit Mixed DAB Refine* | 10 min. |
WASH | Deionized Water | 3x 0:00 min. | |
8 | Counterstain | Refine Detection Kit Hematoxylin* | 5 min. |
WASH | Deionized Water | 0:00 min. | |
WASH | BOND™ Wash Solution | 0:00 min. | |
WASH | Deionized Water | 0:00 min. | |
9 | Dehydration (Offline): | ||
Incubate sections in 95% ethanol two times for 10 seconds each. | |||
Repeat in 100% ethanol, incubating sections two times for 10 seconds each. | |||
Repeat in xylene, incubating sections two times for 10 seconds each. | |||
10 | Mount sections with coverslips and #84583 SignalStain® Mounting Medium | ||
Optional Custom wash: | BOND™ Wash Solution | 2:00 | |
BOND™ Wash Solution | Dispenser Type: OPEN 0:00 | ||
BOND™ Wash Solution | 2:00 | ||
BOND™ Wash Solution | Dispenser Type: OPEN 0:00 | ||
BOND™ Wash Solution | 0:00 | ||
Deionized Water | 0:00 |
*Reagent included in BOND™ Polymer Refine Detection Kit (Catalog No: DS9800)
LEICA® is a registered trademark of Leica Microsystems IR GmbH.
BOND™ is a trademark of Leica Biosystems Melbourne Pty. Ltd. No affiliation or sponsorship between CST and Leica Microsystems IR GmbH or Leica Biosystems Melbourne Pty. Ltd is implied.
posted August 2018
revised September 2018
Protocol Id: 1444
NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.
NOTE: Do not allow slides to dry at any time during this procedure.
For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; follow with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min.
RECOMMENDED DETECTION REAGENTS |
SignalStain® Boost IHC Detection Reagent (HRP, Rabbit) #8114 | SignalStain® Boost IHC Detection Reagent (AP, Rabbit) #18653 |
---|---|---|
COMPATIBLE CHROMOGEN |
SignalStain® DAB Substrate Kit #8059 | SignalStain® Vibrant Red Alkaline Phosphatase Substrate Kit #76713 |
SignalStain® Vivid Purple Peroxidase Substrate Kit #96632 | SignalStain® Ultra Blue Alkaline Phosphatase Substrate Kit #12824 | |
SignalStain® Deep Black Peroxidase Substrate Kit #72986 | ||
SignalStain® Radiant Yellow Peroxidase Substrate Kit #69644 |
NOTE: Use of detection reagents other than those specified in this protocol may require further optimization of the primary antibody to account for the different sensitivities of the detection reagents.
posted February 2010
revised June 2020
Protocol Id: 283
Human, Mouse
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Gly814 of human Semaphorin-4D/CD100 protein.
Semaphorin-4D/CD100 (Sema4D) is a disulfide-linked homodimeric type 1 transmembrane glycoprotein belonging to the class IV family of membrane bound semaphorins. The extracellular domain of Sema4D contains a cysteine-rich semaphorin-like domain, an Ig-like domain, and a PSI domain (1). Research studies have suggested that the cytoplasmic domain has a signaling function as it is phosphorylated on serine residues (2). Initial studies involving Sema4D revealed that it was implicated in axon guidance within the central nervous system through binding its high affinity receptor, plexin-B1 (3). Sema4D function has also been extensively characterized in the immune system and is the first semaphorin found to be expressed on the surface of many types of immune cells (4-6). In the immune system, CD72 serves as a low-affinity receptor for Sema4D (7) and research studies have shown that Sema4D not only regulates T-cell activation (8,9) but is also involved in the regulation of B-cell survival and differentiation (5). Many of the physiologic effects of Sema4D in the immune system are regulated by a soluble extracellular domain-containing fragment generated through proteolytic cleavage (10).
Sema4D has also been implicated in oncogenesis as research studies have demonstrated overexpression in multiple types of solid tumors (11,12). The role of Sema4D in oncogenesis, in part, has been linked to its ability to promote tumor angiogenesis (13), cell invasion (14), and immunosuppression through enhancement of myeloid derived suppressor cell function (15).
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