Instability index
Encyclopedia
The Instability index is a measure of protein
Protein
Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

s, used to determine whether it will be stable in a test tube
Test tube
A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top, usually with a rounded U-shaped bottom....

.

If the index is less than 40, then it is probably stable in the test tube. If it is greater (for example, enaptin
Enaptin
Enaptin is a nuclear envelope protein found in human myocytes and synapses, which is made up of 8,797 amino acids. Post-translational amino acid modifications can be possible...

) then it is probably not stable.

External links

  • Expasy.org (part of UniProt
    UniProt
    UniProt is a comprehensive, high-quality and freely accessible database of protein sequence and functional information, many of which are derived from genome sequencing projects...

    )
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