Protein Statistics

Analyze protein sequences for amino acid composition, molecular weight, pI, and chemical properties

Length
0aa
Molecular Weight
0Da
Isoelectric Point
0pH
GRAVY Score
0
Extinction Coefficient
0M⁻¹cm⁻¹
Instability Index
0
Amino Acid Composition
Detailed Composition Table
Amino AcidSingleThreeCountPercentage
Chemical Properties

What is Protein Statistics?

Comprehensive protein sequence analysis tool that calculates amino acid composition, molecular weight, isoelectric point (pI), GRAVY score, extinction coefficient, and other important physicochemical properties.

How to Use This Tool

Quick guide to analyze proteins:

  1. Paste your protein sequence
  2. Statistics calculate automatically
  3. View visual charts and tables
  4. Download complete analysis

When to Use

This tool is useful when you need to:

  • Analyze protein composition
  • Calculate molecular properties
  • Predict protein stability
  • Compare protein sequences

Example Input

Sample protein sequence (Human insulin):

MALWMRLLPLLALLALWGPDPAAAFVNQHLCGSHLVEALYLVCGERGFFYTPKT...

Click Example to load full sequence

Example Output

Comprehensive statistics including:

Length: 110 aa
MW: 11,981.4 Da
pI: 5.3
GRAVY: -0.108

FAQ

Q: What is GRAVY?
A: Grand Average of Hydropathy - measures overall hydrophobicity.

Q: How is pI calculated?
A: Using pKa values of ionizable groups to find the pH where net charge is zero.