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Enzyme engineering

Compare enzyme variants before you make them.

Predict activity, inspect substrates, and score mutations.

Try it freeBrowse tools
proteiniq.io/app/chai-1

About Enzyme engineering

Enzyme engineering modifies or selects enzymes to improve properties such as activity, substrate preference, stability, specificity, or expression. Decisions depend on the sequence and structure of the enzyme, the relevant substrate or ligand context, and the expected effects of individual variants.

ProteinIQ supports the computational stages of enzyme engineering in one connected workspace. Researchers can annotate sequences, inspect substrate context, predict turnover or stability, model structures, and score variants while keeping every output tied to the enzyme candidate it describes.

Begin with an enzyme sequence or structure and select a workflow for activity, stability, mutation, or substrate analysis. ProteinIQ returns the source tables, structures, scores, and files needed to compare candidates before experimental enzyme assays.

  1. 1

    Sequence and family context

    Search homologs, align related enzymes, and identify conserved or coevolving positions before selecting residues to engineer.

    MMseqs2

    MMseqs2

    Ultra-fast sequence search and clustering. 10,000x faster than BLAST for database searches, with powerful sequence clustering capabilities for proteins and nucleotides.

    sequence-analysiscomparison+4
    HMMER

    HMMER

    Sensitive sequence homology search using profile hidden Markov models. More accurate than BLAST for detecting remote homologs, ideal for finding evolutionarily distant protein family members.

    sequence-analysiscomparison+2
    MAFFT

    MAFFT

    Perform multiple sequence alignment using MAFFT (Multiple Alignment using Fast Fourier Transform). Supports multiple algorithms from fast progressive to highly accurate iterative methods.

    sequence-analysisalignment+5
    pySCA

    pySCA

    Statistical Coupling Analysis for protein families. Identifies co-evolving residue groups (sectors) from multiple sequence alignments using the SCA method from the Ranganathan Lab.

    sequence-analysiscoevolution-analysis+3
    Protein parameters

    Protein parameters

    Calculate sequence-derived protein properties including molecular weight, theoretical pI, extinction coefficients, aromaticity, secondary structure fractions, composition classes, instability, aliphatic index, and GRAVY.

    protein-analysisphysicochemical-properties+1
  2. 2

    Structure and active-site preparation

    Predict or repair the enzyme structure and inspect pockets, protonation, and likely binding-site context.

    Boltz-2

    Boltz-2

    Boltz-2 is a biomolecular foundation model for structure and binding affinity prediction. Supports proteins, ligands, DNA, and RNA in multi-component complexes. Automatically scales GPU resources for large complexes. Predicts binding affinity with near-FEP accuracy at 1000x faster speed.

    protein-foldingstructure-prediction+5
    PDBFixer

    PDBFixer

    PDBFixer is an OpenMM-based tool used for fixing problems in protein/DNA/RNA structure files, including adding missing atoms, adding missing residues, and fixing improper formatting.

    structure-analysisquality-validation+3
    fpocket

    fpocket

    Open-source protein pocket detection using Voronoi tessellation and alpha spheres. Identifies ligand binding sites with druggability scores.

    structure-analysisprotein+2
    PROPKA 3

    PROPKA 3

    Predict pKa values of ionizable groups in proteins and protein-ligand complexes from 3D structure. PROPKA calculates environment-driven pKa shifts for standard ionizable residues, terminal groups, and supported ligand atom types.

    protein-analysisproperty-prediction+3
    ScanNet

    ScanNet

    Geometric deep learning model for predicting protein binding sites directly from 3D structure. Identifies where proteins interact with other proteins, antibodies, or disordered proteins with high accuracy, including for novel protein folds.

    interaction-predictiondeep-learning+3
  3. 3

    Activity and substrate review

    Estimate turnover or cleavage context and examine compatible substrate or inhibitor poses before redesign.

    DLKcat

    DLKcat

    DLKcat predicts enzyme turnover numbers (kcat values) from protein sequences and substrate structures using its published deep-learning model.

    protein-analysisproperty-prediction+3
    CleaveNet

    CleaveNet

    Official CleaveNet tool for matrix metalloproteinase cleavage prediction and peptide generation. Predict cleavage z-scores plus uncertainty across 18 MMP variants, evaluate against truth z-scores, or generate candidate peptides unconditionally or from MMP z-score profiles.

    protein-analysisai-powered+4
    Peptide cutter

    Peptide cutter

    Predict protease and chemical cleavage sites across a protein sequence for up to 39 enzymes simultaneously. Identify where each enzyme cuts, the cleavage residue, and context window around each site.

    protein-analysisphysicochemical-properties+2
    GNINA

    GNINA

    GNINA is a molecular docking tool that combines traditional physics-based docking with deep learning CNN scoring for protein-small-molecule complexes. It provides accurate binding predictions with confidence scores, optimized for high-throughput virtual screening.

    protein-dockingaffinity-prediction+4
  4. 4

    Variant and scaffold design

    Generate new scaffolds or redesign sequences around structural and ligand-aware constraints.

    RFdiffusion 2

    RFdiffusion 2

    RFdiffusion2 is an atom-level enzyme active site scaffolding tool that generates protein scaffolds around your input motif. REQUIRES an input PDB structure containing the active site residues to scaffold. For ligand-aware design, ligands must be embedded in the input PDB as HETATM records.

    protein-designenzyme-design+3
    LigandMPNN

    LigandMPNN

    Design and score protein sequences with ligand, metal, nucleotide, and fixed-side-chain context, with optional native side-chain packing.

    sequence-designenzyme-design+4
    ProteinMPNN

    ProteinMPNN

    Design and score protein sequences for fixed backbone structures with source-native ProteinMPNN checkpoints, constraints, symmetry, and optional side-chain packing.

    proteinsequence-design+2
  5. 5

    Stability and validation

    Compare thermostability, sequence stability, solubility, and structural geometry before choosing variants for assays.

    ThermoMPNN

    ThermoMPNN

    Predict protein thermostability changes (ΔΔG) for point mutations using a graph neural network. Enables computational saturation mutagenesis screening to identify stabilizing mutations.

    protein-analysisproperty-prediction+3
    Protein stability prediction

    Protein stability prediction

    Calculate sequence-derived indicators related to protein stability, including the Guruprasad instability index, aliphatic index, GRAVY, aromaticity, estimated net charge, and charged-residue fraction.

    protein-analysisphysicochemical-properties+2
    NetSolP-1.0

    NetSolP-1.0

    Predict protein solubility and usability for E. coli expression using ESM protein language models

    protein-analysisproperty-prediction+3
    MolProbity

    MolProbity

    Validate protein structure quality with all-atom contact analysis, Ramachandran plots, rotamer assessment, and geometry checks.

    structure-analysisquality-validation+4

Ready to engineer enzymes?

Free

For trying ProteinIQ

$0
100 one-time credits
Get Free
  • Free forever
  • 3 jobs per day
  • Limited atom and residue inputs
  • Access to most tools
  • Academic license

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For academics

$29$23/mo/user
24,000 credits/user/year

Everything in Free

  • No daily job limit
  • Workflows
  • No input limits
  • Access to MD tools
  • Advanced tool settings

Pro

Most popular

For commercial research

$99$79/mo/user
96,000 credits/user/year

Everything in Plus

  • Commercial license
  • Extended tool settings

Enterprise

For organizations at scale

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Custom credit allocation
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Everything in Pro

  • API access
  • Shared seats and admin controls
  • Invoice billing and security review
View all plans and compare features

Questions & answers

ProteinIQ supports enzyme engineering workflows for enzyme annotation, substrate context review, activity prediction, kcat-style scoring, mutation and stability screening, structure modeling, and inhibitor or substrate triage. The platform keeps upstream tool outputs available so enzyme decisions can be reviewed rather than treated as black-box results.

ProteinIQ enzyme tools commonly accept enzyme FASTA sequences, PDB structures, substrate SMILES, inhibitor libraries, mutation lists, and tabular inputs depending on the upstream method. Each workflow keeps the accepted input type tied to the tool that generates the activity, stability, or structure output.

Yes. ProteinIQ can compare enzyme variants with mutation, stability, solubility, structure, and activity-related outputs depending on the selected tools. The results are preserved as tables, structure files, logs, and other artifacts so candidate variants can be compared side by side.

ProteinIQ can run enzyme activity and kcat-oriented prediction tools when the required sequence, structure, or substrate inputs are available. These outputs are computational prioritization signals, so ProteinIQ presents the scores and input context for review rather than treating them as measured kinetic constants.

Yes. ProteinIQ can connect enzyme sequences or structures to design, mutation scoring, and stability prediction tools that help prioritize variants for testing. The platform keeps the redesigned sequences, mutation tables, stability scores, and structure evidence tied to the original enzyme context.

Yes. When an enzyme workflow includes compound context, ProteinIQ can help review substrate or inhibitor candidates with structure, docking, property, and ADMET-style evidence depending on the tools selected. These results support triage and experimental planning rather than replacing biochemical validation.

No. ProteinIQ provides computational enzyme engineering and prioritization evidence. Enzyme kinetics, activity, specificity, stability, expression, and substrate-scope claims still require experimental enzyme assays before they should be treated as validated results.

Yes. ProteinIQ enzyme workflows can export CSV score tables, sequence files, predicted or prepared structures, mutation outputs, docking or compound tables, logs, and upstream result artifacts depending on the tool. Exported files preserve the evidence needed for review outside ProteinIQ.

Start in ProteinIQ with an enzyme sequence or structure and choose either a workflow template or a specific tool for activity prediction, stability review, structure modeling, or compound triage. Running a small test input first is the best way to confirm formatting before scaling to larger variant sets.