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Human Voltage-dependent P/Q-type calcium channel subunit alpha-1A (CACNA1A) ELISA Kit

SKU:
HUEB1410
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
O00555
Range:
0.156-10 ng/mL
ELISA Type:
Sandwich
Synonyms:
CACNA1A, Voltage-dependent P, Q-type calcium channel subunit alpha-1A
Reactivity:
Human
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Description

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Product Name:Human Voltage-dependent P/Q-type calcium channel subunit alpha-1A (CACNA1A) ELISA Kit
Product Code:HUEB1410
Alias:Voltage-dependent P/Q-type calcium channel subunit alpha-1A, Brain calcium channel I, BI, Calcium channel, L type, alpha-1 polypeptide isoform 4, Voltage-gated calcium channel subunit alpha Cav2.1, CACNA1A, CACH4, CACN3, CACNL1A4
Uniprot:O00555
Reactivity:Human
Range:0.156-10 ng/mL
Detection Method:Sandwich
Size:96 Assay
Storage:Please see kit components below for exact storage details
Note:For research use only
UniProt Protein Function:CACNA1A: Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1A gives rise to P and/or Q-type calcium currents. P/Q-type calcium channels belong to the 'high-voltage activated' (HVA) group and are blocked by the funnel toxin (Ftx) and by the omega-agatoxin- IVA (omega-Aga-IVA). They are however insensitive to dihydropyridines (DHP), and omega-conotoxin-GVIA (omega-CTx-GVIA). Defects in CACNA1A are the cause of spinocerebellar ataxia type 6 (SCA6). Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA6 is mainly caused by expansion of a CAG repeat in the coding region of CACNA1A. There seems to be a correlation between the repeat number and earlier onset of the disorder. Defects in CACNA1A are the cause of familial hemiplegic migraine type 1 (FHM1); also known as migraine familial hemiplegic 1 (MHP1). FHM1, a rare autosomal dominant subtype of migraine with aura, is associated with ictal hemiparesis and, in some families, progressive cerebellar atrophy. Defects in CACNA1A are the cause of episodic ataxia type 2 (EA2); also known as acetazolamide-responsive hereditary paroxysmal cerebellar ataxia (APCA). EA2 is an autosomal dominant disorder characterized by acetozolamide- responsive attacks of ataxia, migraine-like symptoms, interictal nystagmus, and cerebellar atrophy. Belongs to the calcium channel alpha-1 subunit (TC 1.A.1.11) family. CACNA1A subfamily. 7 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:

Protein type:Membrane protein, multi-pass; Channel, calcium; Membrane protein, integral

Chromosomal Location of Human Ortholog: 19p13

Cellular Component: cell projection; cell soma; dendrite; cytoplasm; plasma membrane; integral to membrane; voltage-gated calcium channel complex; nucleus

Molecular Function:voltage-gated calcium channel activity; protein binding; syntaxin binding; metal ion binding; high voltage-gated calcium channel activity

Biological Process: cell death; vestibular nucleus development; musculoskeletal movement, spinal reflex action; gamma-aminobutyric acid secretion; regulation of axonogenesis; adult walking behavior; receptor clustering; cellular chloride ion homeostasis; synaptic transmission; behavioral response to pain; elevation of cytosolic calcium ion concentration; synaptogenesis; neurotransmitter metabolic process; negative regulation of neuron apoptosis; neuromuscular process controlling balance; cell growth; cerebellum maturation; synaptic transmission, glutamatergic; rhythmic synaptic transmission; regulation of acetylcholine secretion; dendrite morphogenesis; calcium ion-dependent exocytosis of neurotransmitter; glucose metabolic process; transmission of nerve impulse; spinal cord motor neuron differentiation; regulation of calcium ion-dependent exocytosis; cerebellar molecular layer development; calcium ion-dependent exocytosis; membrane depolarization; sulfur amino acid metabolic process; cerebellar Purkinje cell differentiation; energy reserve metabolic process; neuromuscular synaptic transmission; hormone metabolic process; regulation of insulin secretion; negative regulation of hormone biosynthetic process; gamma-aminobutyric acid signaling pathway

Disease: Spinocerebellar Ataxia 6; Migraine, Familial Hemiplegic, 1; Episodic Ataxia, Type 2

UniProt Code:O00555
NCBI GenInfo Identifier:6166047
NCBI Gene ID:
NCBI Accession:O00555.2
Molecular Weight:
NCBI Full Name:Voltage-dependent P/Q-type calcium channel subunit alpha-1A
UniProt Protein Name:Voltage-dependent P/Q-type calcium channel subunit alpha-1A
UniProt Synonym Protein Names:Brain calcium channel I; BI; Calcium channel, L type, alpha-1 polypeptide isoform 4; Voltage-gated calcium channel subunit alpha Cav2.1
UniProt Gene Name:CACNA1A  
UniProt Entry Name:CAC1A_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.
ELISA
Human CACNA1A ELISA Kit

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