Molecular Docking Service

Flexible, scalable, and ready for ligand screening, protein–ligand modeling, and hit optimization.

At Creative Proteomics, we deliver fast and reliable molecular docking solutions to support your virtual screening, binding mode prediction, and structure-activity analysis. Our multi-engine platform handles proteins, peptides, and complex ligands-even from predicted structures like AlphaFold2.

  • Multi-engine support: AutoDock Vina, Glide, MOE, SwissDock
  • AlphaFold-compatible: From raw sequence to docking-ready models
  • Rigid or flexible docking tailored to your project needs
  • Batch-screen up to 10,000 ligands with rank-ordered outputs
  • Annotated 2D/3D interaction visuals and pose scoring
  • Optional MD, MM/PBSA, and SAR/QSAR integration

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What Is Molecular Docking?

Molecular docking is a powerful computational technique used to predict the preferred orientation of a ligand when bound to a protein or other biomolecular target. This in silico modeling approach simulates the interactions between small molecules and macromolecular structures (proteins, nucleic acids, etc.), enabling researchers to estimate binding affinities, understand molecular mechanisms, and prioritize drug candidates before investing in wet-lab validation.

Protein-to-protein docking process

What Can Molecular Docking Do?

Whether you're screening compound libraries, studying protein-ligand recognition, or identifying novel scaffolds, molecular docking offers an efficient, cost-effective entry point. Our service helps clients:

  • Predict ligand-target binding modes and affinities
  • Uncover key interaction residues at binding interfaces
  • Rank virtual hits based on docking scores and interaction energy
  • Guide rational drug design and hit-to-lead optimization
  • Model enzyme-substrate complexes and signaling molecule binding

Molecular docking shortens the design-build-test cycle by enabling in silico hypothesis testing with high structural fidelity.

Is Molecular Docking Right for Your Project?

If you're exploring computational tools for molecular interaction studies, molecular docking is most effective when:

  • Your protein structure is known (via X-ray, cryo-EM, AlphaFold, or modeling)
  • Ligand structures are defined or can be generated
  • You aim to assess binding modes, rank hits, or design new analogs

Docking may be complemented by molecular dynamics or QSAR modeling when targets are highly flexible or poorly characterized.

 Not sure which approach fits best? Our scientific team will assess your project and recommend the ideal computational pipeline.

Service Highlights of Molecular Docking

Multi-Engine Integration — Accuracy Meets Flexibility

We integrate AutoDock Vina, Schrödinger Glide, MOE, and SwissDock, allowing clients to choose between speed, precision, or library size optimization. This ensures accurate binding predictions across diverse targets.

Structure-Free Compatibility — From Sequence to Structure

No solved crystal structure? No problem. We support docking based on AlphaFold2 or homology-modeled structures, including unknown binding pocket prediction and structural refinement workflows.

Broad Ligand Support — Small Molecules, Peptides, Metals

Our platform accommodates small molecules, cyclic peptides, natural products, and metal-coordinated compounds. All ligands are processed with pH-based protonation, conformer generation, and stereochemistry checks.

Flexible Docking Options — Rigid or Induced-Fit Modeling

Docking workflows support both rigid and flexible configurations, with user-defined side-chain flexibility and adaptive conformational sampling—ideal for modeling induced-fit and allosteric binding.

High-Throughput Capability — Screen 10,000+ Compounds

Optimized for large-scale virtual screening, our system docks up to 10,000 ligands per batch with customizable exhaustiveness. Results are ranked and filtered for downstream testing or SAR analysis.

Technical Services
Service Scope Workflow and Instrumentation Application Deliverables Case Study FAQ Get a Custom Proposal

Scope of Molecular Docking Services at Creative Proteomics

Target Structure Preparation

  • Homology modeling or AlphaFold2-based structure prediction
  • Protein structure cleaning: missing residues repair, hydrogen addition, charge assignment
  • Binding site identification: known site refinement or blind cavity search (SiteMap, CASTp)

Ligand Processing & Optimization

  • Ligand conversion from SMILES, MOL2, SDF formats
  • pH-adjusted protonation, tautomer/ionization state prediction
  • Stereoisomer and conformer generation for flexible molecules
  • Geometry optimization and energy minimization

Docking Simulation

  • Rigid and flexible docking options with user-defined parameters
  • Exhaustiveness adjustment for deep vs fast screening
  • Batch docking for compound libraries (10 to >10,000 ligands)
  • Multiple docking engines available per project (e.g., AutoDock Vina + Glide)

Docking Pose Scoring & Ranking

  • Multi-model scoring: binding energy, hydrogen bonding, hydrophobicity, shape complementarity
  • Optional post-docking clustering and redundancy removal
  • Support for ligand efficiency (LE), fit quality, and ADMET-based filters

Result Visualization & Annotation

  • Top-ranked pose visualizations with PyMOL/Chimera formats
  • 2D interaction diagrams: H-bonds, π-stacking, salt bridges
  • Binding pocket residue annotation and interaction type summary

Optional Add-On Services

  • Binding free energy calculation (MM/PBSA or MM/GBSA)
  • Molecular dynamics refinement of docked complexes
  • QSAR/SAR analysis based on docking outputs
  • Report-ready figure generation and scientific interpretation support

Our Molecular Docking Workflow

Workflow for Molecular Docking
1

Target Structure Preparation

Supports crystal, cryo-EM, AlphaFold2 models, or FASTA sequences. Includes structure refinement, protonation, and binding site detection via SiteMap, CASTp, or custom input.

2

Ligand Preparation

Accepts SMILES, MOL2, SDF, or 2D sketches. Performs tautomer/ionization prediction, stereoisomer generation, and conformer optimization at physiological pH.

3

Docking Simulation

Flexible or rigid docking using AutoDock Vina, Glide, MOE, or custom scoring. Supports batch docking from 1 to 10,000+ ligands with adjustable exhaustiveness.

4

Scoring & Filtering

Ranks poses by binding energy, shape, and pharmacophore fit. Filters hits by clustering, ADMET, ligand efficiency, and chemical diversity.

5

Output & Visualization

Provides ranked poses (PDB/MOL2), annotated interactions, and 2D/3D diagrams. Compatible with PyMOL/Chimera; includes summary report.

Molecular Docking Instrumentation & Technical Capabilities

  • Docking Engines: AutoDock Vina, Schrödinger Glide, MOE, SwissDock, and proprietary in-house scoring scripts
  • Docking Modes Supported: Rigid, semi-flexible, and fully flexible docking; blind docking; user-defined grid boxes
  • Structure Sources: PDB, AlphaFold2 predictions, homology models, and user-uploaded custom structures
  • Ligand Libraries: Supports batch input of up to 10,000 ligands; compatible with SDF, MOL2, SMILES formats
  • Computational Infrastructure: Multi-core cloud HPC system with GPU acceleration for parallelized simulations
  • Output Compatibility: Docking files available in PDB, PDBQT, MOL2, and Chimera/PyMOL-ready formats

Application Scenarios

Virtual Screening of Compound Libraries

Dock and rank thousands of compounds against defined targets to accelerate hit identification and chemical library triaging.

Protein–Ligand Interaction Modeling

Predict binding modes, key residues, and molecular interactions (e.g., H-bonds, π–π stacking) for mechanistic insight and structural validation.

Lead Optimization & SAR Support

Compare analogs, evaluate substitutions, and prioritize scaffolds based on binding affinity and predicted selectivity.

Peptide & Biologic Interaction Modeling

Dock short peptides, macrocycles, or antibody fragments to protein surfaces to guide design of PPI inhibitors or molecular glues.

Allosteric Site Exploration

Identify non-canonical or hidden pockets for modulating target activity beyond the active site—ideal for kinase and PPI targets.

Enzyme–Substrate or Cofactor Binding

Simulate how substrates, cofactors, or ions position within catalytic sites to support enzyme engineering and metabolic pathway design.

Antimicrobial & Antiviral Target Docking

Model small molecule binding to microbial or viral proteins (e.g., Mpro, DNA gyrase) to support infectious disease therapeutic screening.

Input Data Requirements for Molecular Docking Projects

Required Item Accepted Formats Description
Protein Target PDB file, FASTA, UniProt ID Provide a 3D structure or sequence; if unavailable, we offer AlphaFold2/homology modeling.
Ligand Structure(s) MOL2, SDF, SMILES, PubChem CID Single ligand or compound library; we support batch docking with 2D/3D input.
Binding Site Info Residue list, grid box, or N/A Optional. Specify known binding pocket or request blind docking/site prediction.
Docking Preferences Text instructions or template Optional. Indicate preferred docking engine, exhaustiveness, flexibility mode, etc.
Required Item Accepted Formats Description

Deliverables: What You'll Receive

  • Ranked docking poses (PDB, MOL2, or PDBQT)
  • Interaction diagrams (hydrogen bonds, hydrophobic contacts, π-π stacking, etc.)
  • Docking scores and binding energy estimates
  • Optional visualizations in PyMOL or Chimera-ready formats
  • Full analysis report with parameter summary

Molecular Docking vs. Other In Silico Techniques

Method Requires Target Structure Handles Flexibility Computational Cost Ideal Use Case
Molecular Docking

Yes (PDB / predicted models)

Semi-flexible (ligand ± target side chains)

⭐⭐ Structure-based screening; binding mode prediction
Molecular Dynamics (MD)

Yes

Fully dynamic

⭐⭐⭐⭐⭐ Refining docking results; studying conformational stability
Pharmacophore Modeling

Not needed (ligand-based)

No (static 3D model)

⭐⭐ Hit discovery when structural data is limited
Ligand-Based Virtual Screening (LBVS)

No

No

⭐⭐ Similarity-based filtering with known active compounds
QSAR / 3D-QSAR

No

No

⭐⭐⭐ Predicting compound activity with prior experimental data
Free Energy Calculations (e.g., MM/PBSA)

Yes

Yes

⭐⭐⭐⭐ Quantitative ranking of top hits after docking
AlphaFold2 / Homology Modeling

Input = sequence

(pre-docking modeling step)

⭐⭐⭐ Generating docking-ready structures from sequences

Case Study

Docking-Guided Discovery of Thioazo Compounds

Title: Molecular docking analysis of protein Filamin A with thioazo compounds
JournalBioinformation (2023) DOI10.6026/97320630019099

Background

  • Target protein: Human FilaminA (PDB ID: 3HOP), implicated in oral cancer signaling pathways.
  • Ligands: A series of novel thioazo derivatives (Compounds 1–6), evaluated against clinical oncology drug doxorubicin as reference.

Docking Workflow

Structure Preparation: Protein structure was downloaded from PDB and prepared (water removal, addition of hydrogens, charge assignment via AutoDock Tools).

Ligand Modeling: Thioazo compounds were geometry-optimized and converted to 3D PDB files before docking.

Docking Execution: AutoDock Vina was used with a customized grid; nine poses generated per compound, ranked by predicted binding energy.

Key Findings

  • Binding affinities:
    • Compound 5: –6.6 kcal/mol
    • Compound 3: –5.5 kcal/mol (matching doxorubicin)
    • Other compounds scored slightly lower but still showed favorable binding
  • Specific interactions: H-bonds and hydrophobic contacts were observed with residues Glu-227, Trp-216, Lys-220, Arg-226—key for binding stabilization.

Molecular docking analysis of compounds (1-3) against Protein filamin A of Homo sapiens

Molecular docking analysis of compounds (1-3) against Protein filamin A of Homo sapiens

Molecular docking analysis of compounds (4-6) against Protein filamin A of Homo sapiens

Molecular docking analysis of compounds (4-6) against Protein filamin A of Homo sapiens

You May Want to Know

Can I use docking if I don't have a crystal structure of my protein?

Yes. If you only have a protein sequence or UniProt ID, we can generate a reliable 3D structure using AlphaFold2 or homology modeling before initiating docking.

I have dozens of compounds. Do I need to pre-filter them myself?

No. You can submit the entire compound list in SDF, MOL2, or SMILES format. We offer in silico filtering based on size, drug-likeness, or chemical diversity before docking, if needed.

How many docking poses will I receive per ligand?

By default, we provide the top 5–10 ranked binding poses per compound. This can be adjusted based on your analysis needs or screening goals.

What if I want to follow up docking with molecular dynamics or QSAR analysis?

We can support that. Our team offers seamless integration of docking output into MD simulations, MM/PBSA analysis, or QSAR model construction.

Is docking reliable for predicting actual binding in vitro?

Docking is best used as a predictive or filtering tool. While it cannot replace experimental validation, it significantly improves hit quality and prioritization when integrated with downstream assays.

What if my ligand contains unusual atoms or metal centers?

We support coordination complexes and metal-containing ligands (e.g., Zn²⁺, Mg²⁺) and will apply appropriate partial charges and parameters. Please highlight these compounds during submission.

Can I specify the binding site if I already know it?

Yes. You can define the binding pocket using residue numbers or coordinate box boundaries. Otherwise, we will perform binding site prediction or blind docking as appropriate.

What if my compound is a peptide or macrocycle?

We support docking of peptides, macrocyclic ligands, and semi-flexible molecules. Specific docking settings (e.g., ring sampling) will be adjusted to suit your compound class.

Is batch docking of >10,000 compounds possible?

Yes. We offer high-throughput virtual screening services and can handle large compound libraries with appropriate computational scaling. Please inquire for volume-based pricing.

What docking software do you use, and can I choose?

We support multiple docking engines (e.g., AutoDock Vina, Schrödinger Glide, MOE) and can tailor the engine based on your preferences, compound class, or previous project compatibility.

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