Instability index

instability_index

(10/L)·Σ DIWV(dipeptide). >40 suggests a sequence predicted unstable in vitro. Dipeptide weight table per Guruprasad 1990; exact match vs BioPython. Protein-derived — interpret cautiously for very short peptides.

Calculated from the parent-residue sequence when a standard sequence is available. Values appear on peptide records under the physicochemical profile.

• Peptides
  18,184
• Min
  -79.55
• Median
  30.04