Monod-Wyman-Changeux Calculator Accurate MWC Allosteric Model Calculator for Hemoglobin, Enzymes & Cooperative Binding MWC Allosteric Parameters Number of Subunits (n) Allosteric Constant L = [T]/[R] Dissociation Constant for R-state (KR) µM Dissociation Constant for T-state (KT) µM Ligand Concentration [S] µM Calculate Fractional Saturation Results Fractional Saturation (Y): Apparent Hill Coefficient (nH): R-state […]
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Koshland-Némethy-Filmer Calculator KNF Sequential Model Calculator Number of Subunits (n): Allosteric Constant L₀ (R₀/T₀ ratio): Affinity Ratio c = Kᵣ / Kₜ (c < 1): Dissociation Constant for R state Kᵣ (μM): Substrate Concentration [S] (μM): Calculate Fractional Saturation & Cooperativity About the Koshland-Némethy-Filmer Calculator The Koshland-Némethy-Filmer Calculator is a scientifically accurate, interactive tool designed
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Protein Quaternary Structure Calculator Determine Oligomeric State from Molecular Weight & Subunit Data Subunit Molecular Weight (kDa) Native (Observed) Molecular Weight (kDa) Protein Type Homooligomer (identical subunits)Heterooligomer (different subunits) Number of Different Subunit Types Calculate Quaternary Structure Result About the Protein Quaternary Structure Calculator The Protein Quaternary Structure Calculator is a scientifically accurate,
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Protein Subunit Calculator Calculate Protein Complex Composition Enter the number of each subunit type in your protein complex: Number of α subunits: Number of β subunits: Number of γ subunits: Number of δ subunits: Number of other/unique subunits: Calculate Protein Structure About the Protein Subunit Calculator The Protein Subunit Calculator is a powerful, scientifically accurate
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Oligomeric State Calculator Predict Protein Quaternary Structure from Molecular Weight Monomer Molecular Weight kDa Observed Molecular Weight (Native) kDa Experimental Method SEC-MALSAnalytical Ultracentrifugation (AUC)Native Mass SpectrometryNative PAGE / Blue Native PAGEChemical Cross-linking Tolerance (± %) % Calculate Oligomeric State Predicted Oligomeric State About the Oligomeric State Calculator The Oligomeric State Calculator is a
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Protein Assembly Calculator Calculate Protein Complex Assembly Enter the details of your protein subunits to estimate the stability, stoichiometry, and binding energy of the final assembled complex. Number of Subunits (n): Binding Affinity per Interface (ΔG in kcal/mol): Symmetry Type: Cyclic (Cn)Dihedral (Dn)TetrahedralOctahedralIcosahedralHeteromeric (Custom) Temperature (°C): Calculate Assembly About the Protein Assembly Calculator The Protein
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Multimer Formation Calculator Predict Plasmid Multimer Formation Risk This Multimer Formation Calculator assesses the likelihood of plasmid multimerization in E. coli based on validated recombination hotspot mapping and plasmid backbone analysis. Replication Origin ColE1 / pMB1 (pUC, pBluescript)p15A (pACYC)CDFCloDF13 Plasmid Size (kb) Contains cer/XerCD site? (pSC101, pCAKC vectors) YesNo Direct Repeats > 15
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Protein Complex Stability Calculator The Protein Complex Stability Calculator is a scientifically validated, free online tool that accurately predicts the thermodynamic stability and binding affinity of protein-protein, protein-ligand, protein-DNA/RNA, and antibody-antigen complexes using peer-reviewed biophysical models and experimentally derived parameters. This Protein Complex Stability Calculator helps researchers, students, and biotech professionals quickly estimate
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Interface Energy Calculator Free Interface Energy Calculator (Scientific Grade) Accurately calculate solid-liquid interfacial tension using Young, Owens-Wendt-Rabel-Kaelble (OWRK), Wu, and Fowkes methods. Calculation Method Young Equation (Contact Angle)Owens-Wendt-Rabel-Kaelble (OWRK) – Most CommonWu (Harmonic Mean)Fowkes (Geometric Mean) Surface Energy of Solid γₛᵥ (mJ/m²) Surface Tension of Liquid γₗᵥ (mJ/m²) Contact Angle θ (degrees) Liquid
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Binding Interface Calculator A scientifically accurate Binding Interface Calculator that computes protein–ligand binding free energy (ΔG), dissociation constant (Kd), buried surface area, and binding affinity using peer-reviewed thermodynamic and structural formulas. Enthalpy Change ΔH (kcal/mol) Entropy Change ΔS (cal/mol·K) Temperature (K) Buried Interface Area (Ų) Number of Interfacial Hydrogen Bonds Calculate Binding Parameters
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