Description
Human Neuroligin-4, X-linked (NLGN4X) ELISA Kit
The Human Neuroligin-4 X-Linked (NLGN4X) ELISA Kit is specifically designed for the accurate detection of NLGN4X levels in human serum, plasma, and cell culture supernatants. This kit offers high sensitivity and specificity, ensuring precise and reproducible results for various research applications.NLGN4X is a key protein involved in synaptic function and neuronal signaling, playing a crucial role in conditions such as autism spectrum disorders and intellectual disabilities.
By measuring NLGN4X levels, researchers can gain valuable insights into these neurodevelopmental disorders and potentially identify novel therapeutic targets.With its advanced technology and reliable performance, the Human NLGN4X ELISA Kit is an essential tool for studying neurodevelopmental disorders and advancing our understanding of synaptic function. Trust in this kit for accurate and impactful research outcomes.
| Product Name: | Human Neuroligin-4, X-linked (NLGN4X) ELISA Kit |
| SKU: | HUEB2509 |
| Size: | 96T |
| Target: | Human Neuroligin-4, X-linked (NLGN4X) |
| Synonyms: | HNLX, UNQ365/PRO701, Neuroligin X, KIAA1260, NLGN4 |
| Assay Type: | Sandwich |
| Detection Method: | ELISA |
| Reactivity: | Human |
| Detection Range: | 0.312-20ng/mL |
| Sensitivity: | 0.098ng/mL |
| Intra CV: | 5.3% | ||||||||||||||||||||
| Inter CV: | 9.9% | ||||||||||||||||||||
| Linearity: |
| ||||||||||||||||||||
| Recovery: |
| ||||||||||||||||||||
| Function: | Putative neuronal cell surface protein involved in cell-cell-interactions. |
| Uniprot: | Q8N0W4 |
| Sample Type: | Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids |
| Specificity: | Natural and recombinant human Neuroligin-4, X-linked |
| Sub Unit: | Homodimer. Interacts with NRXN1 in a calcium-dependent manner. Interacts through its C-terminus with DLG4/PSD-95 third PDZ domain. |
| Research Area: | Neurosciences |
| Subcellular Location: | Cell membrane Single-pass type I membrane protein Cell junction Synapse Postsynaptic cell membrane Postsynaptic density |
| Storage: | Please see kit components below for exact storage details |
| Note: | For research use only |
| UniProt Protein Function: | NLGN4X: Putative neuronal cell surface protein involved in cell- cell-interactions. Defects in NLGN4X may be the cause of susceptibility to autism X-linked type 2 (AUTSX2). AUTSX2 is a pervasive developmental disorder (PDD), prototypically characterized by impairments in reciprocal social interaction and communication, restricted and stereotyped patterns of interests and activities, and the presence of developmental abnormalities by 3 years of age. Defects in NLGN4X may be the cause of susceptibility to X-linked Asperger syndrome 2 (ASPGX2). ASPGX2 is considered to be a form of childhood autism. Belongs to the type-B carboxylesterase/lipase family. 2 isoforms of the human protein are produced by alternative splicing. |
| UniProt Protein Details: | Protein type:Membrane protein, integral Chromosomal Location of Human Ortholog: Xp22.33 Cellular Component: postsynaptic membrane; extracellular space; cell surface; integral to plasma membrane; postsynaptic density; dendrite; integral to membrane; plasma membrane; excitatory synapse; synapse; cell junction Molecular Function:protein binding; protein homodimerization activity; neurexin binding; cell adhesion molecule binding; receptor activity; chloride ion binding Biological Process: neuron differentiation; regulation of synaptic transmission; organ growth; intercellular junction assembly and maintenance; metabolic process; adult behavior; synapse organization and biogenesis; cerebellum development; neuron adhesion; social behavior; learning Disease: Asperger Syndrome, X-linked, Susceptibility To, 2; Autism, Susceptibility To, X-linked 2 |
| NCBI Summary: | This gene encodes a member of the type-B carboxylesterase/lipase protein family. The encoded protein belongs to a family of neuronal cell surface proteins. Members of this family may act as splice site-specific ligands for beta-neurexins and may be involved in the formation and remodeling of central nervous system synapses. The encoded protein interacts with discs large homolog 4 (DLG4). Mutations in this gene have been associated with autism and Asperger syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013] |
| UniProt Code: | Q8N0W4 |
| NCBI GenInfo Identifier: | 31076821 |
| NCBI Gene ID: | 57502 |
| NCBI Accession: | Q8N0W4.1 |
| UniProt Secondary Accession: | Q8N0W4,Q6UX10, Q9ULG0, |
| UniProt Related Accession: | Q8N0W4 |
| Molecular Weight: | 91,915 Da |
| NCBI Full Name: | Neuroligin-4, X-linked |
| NCBI Synonym Full Names: | neuroligin 4, X-linked |
| NCBI Official Symbol: | NLGN4X |
| NCBI Official Synonym Symbols: | HLNX; HNL4X; NLGN4; ASPGX2; AUTSX2 |
| NCBI Protein Information: | neuroligin-4, X-linked |
| UniProt Protein Name: | Neuroligin-4, X-linked |
| UniProt Synonym Protein Names: | HNLX |
| Protein Family: | Neuroligin |
| UniProt Gene Name: | NLGN4X |
| UniProt Entry Name: | NLGNX_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. |
