Description
Rat Gap junction alpha-1 protein (Gja1) ELISA Kit
The Rat Gap Junction Alpha-1 Protein (GJA1) ELISA Kit is specifically designed for the precise quantification of GJA1 levels in rat samples, including serum, plasma, and cell culture supernatants. With its high sensitivity and specificity, this kit delivers accurate and reproducible results, making it an invaluable tool for a variety of research applications.Gap junctions are crucial for intercellular communication, allowing for the exchange of ions, molecules, and signaling molecules between cells. GJA1, also known as connexin 43, is a key protein in the formation of these gap junctions and plays a vital role in various physiological processes, such as cardiac conduction, cell growth, and differentiation.
By accurately measuring GJA1 levels, researchers can gain insight into cellular communication and its impact on various diseases and conditions, including cardiovascular disorders, neurological diseases, and cancer. The Rat GJA1 ELISA Kit offers a reliable and efficient method for studying these important biological processes and developing potential therapeutic interventions.
| Product Name: | Rat Gap junction alpha-1 protein (Gja1) ELISA Kit |
| SKU: | RTEB1447 |
| Size: | 96T |
| Target: | Rat Gap junction alpha-1 protein (Gja1) |
| Synonyms: | Connexin-43, Gap junction 43 kDa heart protein, Cx43, Cxn-43 |
| Assay Type: | Sandwich |
| Detection Method: | ELISA |
| Reactivity: | Rat |
| Detection Range: | 0.156-10ng/mL |
| Sensitivity: | 0.087ng/mL |
| Intra CV: | 4.5% | ||||||||||||||||||||
| Inter CV: | 7.3% | ||||||||||||||||||||
| Linearity: |
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| Recovery: |
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| Function: | Gap junction protein that acts as a regulator of bladder capacity. A gap junction consists of a cluster of closely packed pairs of transmembrane channels, the connexons, through which materials of low MW diffuse from one cell to a neighboring cell. Negative regulator of bladder functional capacity: acts by enhancing intercellular electrical and chemical transmission, thus sensitizing bladder muscles to cholinergic neural stimuli and causing them to contract (By similarity). May play a role in cell growth inhibition through the regulation of NOV expression and localization (PubMed:15181016). Plays an essential role in gap junction communication in the ventricles. |
| Uniprot: | P08050 |
| Sample Type: | Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids |
| Specificity: | Natural and recombinant rat Gap junction alpha-1 protein |
| Sub Unit: | A connexon is composed of a hexamer of connexins. Interacts with SGSM3 (By similarity). Interacts with RIC1/CIP150 (By similarity). Interacts with CNST and CSNK1D (By similarity). Interacts (via C-terminus) with TJP1. Interacts (via C-terminus) with SRC (via SH3 domain). Interacts (not ubiquitinated) with UBQLN4 (via UBA domain). Interacts with NOV (PubMed:15181016, PubMed:15213231). Interacts with TMEM65. |
| Subcellular Location: | Cell membrane Multi-pass membrane protein Cell junction Gap junction Endoplasmic reticulum Localizes at the intercalated disk (ICD) in cardiomyocytes and the proper localization at ICD is dependent on TMEM65. |
| Storage: | Please see kit components below for exact storage details |
| Note: | For research use only |
| UniProt Protein Function: | GJA1: an integral membrane protein of the connexin family, alpha-type (group II) subfamily. Hexamers of connexin-43 form connexons, which aggregate together to form gap junctions, through which materials of low MW diffuse from one cell to a neighboring cell. May play a critical role in the physiology of hearing by participating in the recycling of potassium to the cochlear endolymph. |
| UniProt Protein Details: | Protein type:Channel, misc.; Membrane protein, integral; Membrane protein, multi-pass; Motility/polarity/chemotaxis Chromosomal Location of Human Ortholog: 20q11 Cellular Component: apical plasma membrane; cell junction; connexin complex; contractile fiber; cytoplasm; cytosol; early endosome; endoplasmic reticulum membrane; endosome; extracellular exosome; fascia adherens; focal adhesion; gap junction; Golgi apparatus; Golgi membrane; integral component of plasma membrane; intercalated disc; intercellular junction; intermediate filament; late endosome; lateral plasma membrane; lysosome; membrane; membrane raft; mitochondrial outer membrane; mitochondrion; multivesicular body; plasma membrane; protein complex Molecular Function:beta-tubulin binding; gap junction channel activity; ion transmembrane transporter activity; PDZ domain binding; protein binding; protein domain specific binding; receptor binding; SH3 domain binding; signal transducer activity Biological Process: adult heart development; apoptosis; ATP transport; atrial ventricular junction remodeling; blood vessel morphogenesis; cell communication; cell communication by chemical coupling; cell communication by electrical coupling; cell-cell junction organization; cell-cell signaling; cellular response to parathyroid hormone stimulus; cellular response to pH; chronic inflammatory response; decidualization; elevation of cytosolic calcium ion concentration; embryonic digit morphogenesis; embryonic heart tube development; endothelium development; epithelial cell maturation; gap junction assembly; heart development; heart looping; in utero embryonic development; lens development in camera-type eye; milk ejection reflex; negative regulation of cardiac muscle cell proliferation; negative regulation of cell growth; negative regulation of cell proliferation; negative regulation of DNA biosynthetic process; negative regulation of endothelial cell proliferation; negative regulation of gene expression; neuron migration; neuron projection morphogenesis; osteoblast differentiation; positive regulation of behavioral fear response; positive regulation of blood vessel diameter; positive regulation of cell communication by chemical coupling; positive regulation of gene expression; positive regulation of glomerular filtration; positive regulation of I-kappaB kinase/NF-kappaB signaling; positive regulation of insulin secretion; positive regulation of osteoblast differentiation; positive regulation of protein catabolic process; positive regulation of striated muscle tissue development; positive regulation of vasoconstriction; protein oligomerization; regulation of bicellular tight junction assembly; regulation of bone mineralization; regulation of bone remodeling; regulation of calcium ion transport; regulation of heart contraction; regulation of transmembrane transporter activity; response to glucose stimulus; response to lipopolysaccharide; response to peptide hormone; response to pH; response to retinoic acid; signal transduction; skeletal muscle tissue regeneration; transmembrane transport; vascular transport |
| NCBI Summary: | gap junction component; plays a role in cell-cell communication [RGD, Feb 2006] |
| UniProt Code: | P08050 |
| NCBI GenInfo Identifier: | 6978896 |
| NCBI Gene ID: | 24392 |
| NCBI Accession: | NP_036699.1 |
| UniProt Secondary Accession: | P08050,Q53ZE1, |
| UniProt Related Accession: | P08050 |
| Molecular Weight: | |
| NCBI Full Name: | gap junction alpha-1 protein |
| NCBI Synonym Full Names: | gap junction protein, alpha 1 |
| NCBI Official Symbol: | Gja1 |
| NCBI Official Synonym Symbols: | Cx43 |
| NCBI Protein Information: | gap junction alpha-1 protein |
| UniProt Protein Name: | Gap junction alpha-1 protein |
| UniProt Synonym Protein Names: | Connexin-43; Cx43; Gap junction 43 kDa heart protein |
| UniProt Gene Name: | Gja1 |
| Component | Quantity (96 Assays) | Storage |
| ELISA Microplate (Dismountable) | 8×12 strips | -20°C |
| Lyophilized Standard | 2 | -20°C |
| Sample Diluent | 20ml | -20°C |
| Assay Diluent A | 10mL | -20°C |
| Assay Diluent B | 10mL | -20°C |
| Detection Reagent A | 120µL | -20°C |
| Detection Reagent B | 120µL | -20°C |
| Wash Buffer | 30mL | 4°C |
| Substrate | 10mL | 4°C |
| Stop Solution | 10mL | 4°C |
| Plate Sealer | 5 | - |
Other materials and equipment required:
- Microplate reader with 450 nm wavelength filter
- Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
- Incubator
- Deionized or distilled water
- Absorbent paper
- Buffer resevoir
*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.
| Step | |
| 1. | Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C. |
| 2. | Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform. |
| 3. | Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper. |
| 4. | Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C. |
| 5. | Repeat the wash process for five times as conducted in step 3. |
| 6. | Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction. |
| 7. | Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing. |
| 8. | Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters. |
| 9. | After experiment, store all reagents according to the specified storage temperature respectively until their expiry. |
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
| Sample Type | Protocol |
| Serum | If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. |
| Plasma | Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit. |
| Urine & Cerebrospinal Fluid | Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid. |
| Cell culture supernatant | Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately. |
| Cell lysates | Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Tissue homogenates | The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C. |
| Tissue lysates | Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Breast Milk | Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles. |
