Visual AntibodyResearch-grade antibody tools
Antibody sequence to CDR and 3D
IMGT numbering, CDR identification, pI, molecular weight, and Fv 3D structure—built for antibody researchers.
Research and education only. Not medical advice.
Go to Sequence Analyzer to get started.
How it works
Search or enter sequence
Use the search above or go to the calculator to enter antibody sequence.Peptide Properties
Get properties & dose
Get IMGT numbering, CDR regions, pI, molecular weight, charge.
Verify purity
View 3D structure and export PDB, PNG, CSV.Open Verify →
Antibody sequence → full properties
Enter antibody sequence. Get IMGT numbering, CDR regions, pI, molecular weight, charge, and 3D structure viewer. Export PDB, PNG, CSV.
3D Structure Viewer — Antibody
View antibody Fv and complex structures in-site (rotate, zoom, measure, export). Use CDR Highlighter for paratope visualization.
Calculator · 3D Viewer · Export
Sequence analyzer, CDR identification (IMGT/Kabat), pI & MW; Fv region 3D, CDR highlighter, PDB upload; export formats and CDR sequence export. Calculator → Tools →
Sequence Analyzer (CDR/Kabat)
Antibody sequence → CDR regions, pI, MW, charge. Kabat numbering.
pI & Molecular Weight
Isoelectric point and molecular weight from sequence.
Fv Region 3D
View Fv/antibody 3D structure. Load PDB, measure, export.
CDR Highlighter
Visualize CDR regions in 3D structure.
PDB Upload (Antibody)
Load antibody PDB. View, measure, export PNG/PDB.
Export Formats
PDB, PNG, CSV. Download and cite.
CDR Sequence Export
Export CDR sequences for analysis or design.
Docs
Getting started, numbering systems, data sources, tutorials.
Pricing
Free tier for research. Pro & Enterprise for teams and API.
Calculation standards & reproducibility — IUPAC, Bjellqvist (pI), Expasy ProtParam. All results traceable and citable.
For peptide purity verification (Janoshik), see Verify. For Visual Antibody quality control, use your preferred third-party lab.