Cat. # | Size | Price | Inventory |
---|---|---|---|
45586S | 100 µl |
REACTIVITY | H |
SENSITIVITY | Endogenous |
MW (kDa) | 32, 42 |
Source/Isotype | Rabbit IgG |
Product Information
Application | Dilution |
---|---|
Western Blotting | 1:1000 |
Immunoprecipitation | 1:50 |
Immunohistochemistry (Paraffin) | 1:50 - 1:200 |
For western blots, incubate membrane with diluted primary antibody in 5% w/v 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 antibody dilution.
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: 263
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: 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
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro176 of human Galectin-8/LGALS8 protein.
Galectins are a family of β-galactose binding proteins with intracellular and extracellular activities regulating cell adhesion and migration, immune responses, inflammation, cell death, and proliferation and are linked to several pathological conditions (reviewed in 1). Galectins can be divided into three groups: 1) prototype galectins (Gal-1, -2, -5, -7, -10, -11, -13, and -16) having one carbohydrate-recognition domain (CRD); 2) tandem-repeat type galectins (Gal-4, -6, -8, -9, and -12) that have two CRDs joined by a linker peptide; and 3) a chimera-type (Gal-3) that has a single CRD joined to an N-terminal non-lectin domain.
Galectin-8 (Gal-8; gene name LGALS8), which belongs to the group of tandem-repeat galectins, is important in adaptive and innate immunity with significant roles in host defense as well as tumor progression (reviewed in 2,3). Extracellular galectin-8 promotes cell adhesion through interaction with several cell surface proteins, including integrins (4,5), CD44 (6), CD45 (7), and CD166 (8). Intracellular galectin-8 binds to farnesylated K-Ras4B, regulating MAPK signaling (9). It also exerts a role in xenophagy by binding to glycans exposed on bacterial pathogens and recruiting NDP52 for destruction by autophagy, thereby restricting bacterial proliferation (10,11). Abundant expression of galectin-8 has been observed in various cancer types and, in some cases, associated with poor prognosis (12-14).
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