Description
Human Gap junction alpha-1 protein (GJA1) ELISA Kit
The Human GAP Junction Alpha-1 Protein (GJA1) ELISA Kit is a revolutionary tool designed for the precise measurement of GJA1 levels in human biological samples such as serum, plasma, and cell culture supernatants. This innovative kit boasts exceptional sensitivity and specificity, ensuring accurate and consistent results for a diverse array of research applications.GJA1, also known as connexin-43, is a critical component of gap junctions that facilitate cell-to-cell communication and signaling. Dysregulation of GJA1 has been linked to various diseases including cardiovascular disorders, neurological conditions, and cancer.
As such, GJA1 serves as a valuable biomarker for investigating these pathological processes and exploring potential therapeutic interventions.With its advanced technology and reliable performance, the Human GAP Junction Alpha-1 Protein (GJA1) ELISA Kit is the ideal solution for researchers seeking to delve deeper into the role of GJA1 in health and disease. Don't miss out on the opportunity to enhance your research with this cutting-edge ELISA kit from AssayGenie.
| Product Name: | Human Gap junction alpha-1 protein (GJA1) ELISA Kit |
| SKU: | HUEB2284 |
| Size: | 96T |
| Target: | Human Gap junction alpha-1 protein (GJA1) |
| Synonyms: | Connexin-43, Gap junction 43 kDa heart protein, Cx43, GJAL |
| Assay Type: | Sandwich |
| Detection Method: | ELISA |
| Reactivity: | Human |
| Detection Range: | 0.312-20ng/mL |
| Sensitivity: | 0.15ng/mL |
| Intra CV: | 6.6% | ||||||||||||||||||||
| Inter CV: | 9.1% | ||||||||||||||||||||
| 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. May play a critical role in the physiology of hearing by participating in the recycling of potassium to the cochlear endolymph. 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. Plays an essential role in gap junction communication in the ventricles. |
| Uniprot: | P17302 |
| Sample Type: | Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids |
| Specificity: | Natural and recombinant human Gap junction alpha-1 protein |
| Sub Unit: | A connexon is composed of a hexamer of connexins. Interacts (via C-terminus) with TJP1 (By similarity). Interacts (via C-terminus) with SRC (via SH3 domain) (By similarity). Interacts (not ubiquitinated) with UBQLN4 (via UBA domain) (By similarity). Interacts with SGSM3 and CNST (By similarity). Interacts with RIC1/CIP150. Interacts with CSNK1D. 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:Membrane protein, integral; Channel, misc.; Motility/polarity/chemotaxis; Membrane protein, multi-pass Chromosomal Location of Human Ortholog: 6q22.31 Cellular Component: Golgi apparatus; endoplasmic reticulum membrane; focal adhesion; contractile fiber; integral to plasma membrane; lysosome; early endosome; intermediate filament; fascia adherens; cytosol; lipid raft; Golgi membrane; multivesicular body; connexon complex; mitochondrial outer membrane; apical plasma membrane; gap junction; plasma membrane; lateral plasma membrane Molecular Function:protein binding; signal transducer activity; ion transmembrane transporter activity; beta-tubulin binding; SH3 domain binding; gap junction channel activity; receptor binding; PDZ domain binding Biological Process: lens development in camera-type eye; response to peptide hormone stimulus; apoptosis; heart development; neuron migration; milk ejection; positive regulation of vasodilation; signal transduction; elevation of cytosolic calcium ion concentration; muscle contraction; cell-cell signaling; negative regulation of cardiac muscle cell proliferation; positive regulation of glomerular filtration; transport; response to glucose stimulus; positive regulation of striated muscle development; heart looping; ATP transport; adult heart development; chronic inflammatory response; positive regulation of I-kappaB kinase/NF-kappaB cascade; gap junction assembly; in utero embryonic development; epithelial cell maturation; regulation of bone remodeling; positive regulation of insulin secretion; skeletal muscle regeneration; regulation of calcium ion transport; vascular transport; protein oligomerization; osteoblast differentiation; positive regulation of osteoblast differentiation; negative regulation of endothelial cell proliferation; positive regulation of vasoconstriction; positive regulation of protein catabolic process; blood vessel morphogenesis; embryonic digit morphogenesis; regulation of bone mineralization; neurite morphogenesis; response to pH Disease: Syndactyly, Type Iii; Craniometaphyseal Dysplasia, Autosomal Recessive; Palmoplantar Keratoderma And Congenital Alopecia 1; Atrioventricular Septal Defect 3; Oculodentodigital Dysplasia; Erythrokeratodermia Variabilis Et Progressiva; Oculodentodigital Dysplasia, Autosomal Recessive; Hypoplastic Left Heart Syndrome 1 |
| NCBI Summary: | This gene is a member of the connexin gene family. The encoded protein is a component of gap junctions, which are composed of arrays of intercellular channels that provide a route for the diffusion of low molecular weight materials from cell to cell. The encoded protein is the major protein of gap junctions in the heart that are thought to have a crucial role in the synchronized contraction of the heart and in embryonic development. A related intronless pseudogene has been mapped to chromosome 5. Mutations in this gene have been associated with oculodentodigital dysplasia, autosomal recessive craniometaphyseal dysplasia and heart malformations. [provided by RefSeq, May 2014] |
| UniProt Code: | P17302 |
| NCBI GenInfo Identifier: | 117706 |
| NCBI Gene ID: | 2697 |
| NCBI Accession: | P17302.2 |
| UniProt Secondary Accession: | P17302,Q6FHU1, Q9Y5I8, B2R5U9, |
| UniProt Related Accession: | P17302 |
| Molecular Weight: | 382 |
| NCBI Full Name: | Gap junction alpha-1 protein |
| NCBI Synonym Full Names: | gap junction protein, alpha 1, 43kDa |
| NCBI Official Symbol: | GJA1 |
| NCBI Official Synonym Symbols: | HSS; CMDR; CX43; GJAL; ODDD; AVSD3; HLHS1 |
| NCBI Protein Information: | gap junction alpha-1 protein; connexin 43; connexin-43; gap junction 43 kDa heart protein |
| UniProt Protein Name: | Gap junction alpha-1 protein |
| UniProt Synonym Protein Names: | Connexin-43; Cx43; Gap junction 43 kDa heart protein |
| Protein Family: | Gap junction alpha-1 protein |
| UniProt Gene Name: | GJA1 |
| UniProt Entry Name: | CXA1_HUMAN |
| 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. |
