Materials and Equipment Required

Before beginning, ensure the following materials are available:

• Recombinant Human GNAO1 Protein (SKU: rp367898), stored at -80 °C until use
• Sterile, nuclease-free water or the recommended reconstitution buffer (refer to the product datasheet for the specific buffer composition)
• Microcentrifuge tubes (1.5 mL, low-protein-binding recommended)
• Calibrated micropipettes and sterile tips
• Microcentrifuge capable of ≥10,000 × g
• Ice bucket or cooling block to maintain sample at 4 °C during handling
• Protein quantification reagents (e.g., BCA or Bradford assay kit)
• Appropriate assay buffers for downstream application (e.g., GTPase activity assay buffer, pull-down lysis buffer)

Note: Always consult the lot-specific Certificate of Analysis (CoA) and product datasheet supplied with the product for confirmed specifications before proceeding.

Reconstitution and Aliquoting Procedure

Follow these steps carefully to reconstitute and aliquot Recombinant Human GNAO1 Protein:

1. Thawing: Remove the vial from -80 °C storage and allow it to thaw slowly on ice at 4 °C. Do not thaw at room temperature or use a water bath, as rapid temperature shifts may compromise protein activity.
2. Centrifugation: Briefly centrifuge the vial (approximately 5–10 seconds at low speed) to collect any lyophilized material or liquid from the tube walls and cap.
3. Reconstitution: Add the volume of sterile reconstitution buffer specified on the product datasheet dropwise to the vial. Gently swirl or pipette up and down to dissolve — do not vortex, as vigorous agitation can denature the protein.
4. Equilibration: Allow the reconstituted protein to stand on ice for 5–10 minutes to ensure complete dissolution.
5. Quantification: Determine protein concentration using a BCA or Bradford assay against a BSA standard curve to confirm expected concentration.
6. Aliquoting: Divide the reconstituted protein into single-use aliquots using low-protein-binding tubes to minimize adsorption losses and avoid repeated freeze-thaw cycles.
7. Storage of aliquots: Snap-freeze aliquots in liquid nitrogen and store at -80 °C. For short-term use within 1–2 weeks, aliquots may be kept at 4 °C.

Important: Repeated freeze-thaw cycles significantly reduce protein activity. Plan aliquot volumes according to your anticipated per-experiment usage.

Application Guidelines for G-Protein Signaling Assays

Recombinant Human GNAO1 Protein is suitable for a range of biochemical and cell-free assays investigating G-protein alpha subunit function. Typical applications include:

• GTPase Activity Assays: GNAO1 exhibits intrinsic GTPase activity. Use the protein in GTP hydrolysis assays to characterize basal activity or the modulatory effect of RGS proteins or pharmacological agents. Optimize protein concentration empirically using pilot experiments.
• Protein–Protein Interaction Studies: GNAO1 interacts with Gβγ subunits, GPCRs, RGS proteins, and effector molecules. The recombinant protein can be used in GST pull-down, co-immunoprecipitation (co-IP), or surface plasmon resonance (SPR) assays to map interaction interfaces.
• Structural and Biophysical Studies: The purified protein is suitable as a reference standard or antigen in enzyme-linked immunosorbent assays (ELISA) and Western blot validation experiments.
• Drug Screening: GNAO1 is a relevant target in neurological disease research. The recombinant protein can be used in competitive binding or activity-based screening platforms.

Optimization note: Optimal working concentrations vary by assay format. Always include appropriate positive and negative controls. Refer to peer-reviewed literature and the product datasheet for starting-point concentration recommendations.

Quality Control and Troubleshooting

To ensure experimental reliability, incorporate the following quality control (QC) checks:

For further technical support, contact Aladdin Scientific's technical support team and reference SKU rp367898 and lot number from your CoA.

Safety, Disposal, and Regulatory Notes

Safety: Recombinant Human GNAO1 Protein is intended for research use only (RUO) and is not approved for human therapeutic, diagnostic, or veterinary use. Handle according to your institution's biosafety guidelines for recombinant proteins. Wear appropriate personal protective equipment (PPE) including gloves and a lab coat.

Disposal: Dispose of protein-containing waste in accordance with local institutional and governmental regulations for biological materials. Inactivate protein waste with appropriate methods (e.g., autoclaving or chemical inactivation) before disposal if required by your facility's biosafety protocol.

Regulatory: This product is supplied for research purposes only. Users are responsible for compliance with all applicable local, national, and international regulations governing the use of recombinant proteins in their jurisdiction.