Prot pi[prɑːt paɪ]

Protein Tool

Prot pi | Protein Tool is a web application for calculating physico-chemical parameters of proteins and peptides.

Peptide Tool

Prot pi | Peptide Tool is a calculator for physico-chemical parameters of peptides.

Mass Spectrum Simulator

Calculate isoelectric point, exact mass and the absorption coefficient of proteins.
Calculate ion masses, pI, hydrophobicity and absorption coefficient of peptides.
Simulates the exact isotopic distribution and the mass spectrum of a single or multiple chemical compounds and high molecular mass polymers.

Modifications Database

A database of protein post translational modifications.