Recent theoretical and computational studies have shown that the charge content and， most importantly， the linear distribution of opposite charges are major determinants of conformational properties of intrinsically disordered proteins (IDPs). Charge segregation in a sequence can be measured through κ， which represents a normalized measure of charge asymmetry. A strong inverse correlation between κ and radius of gyration has been previously demonstrated for two independent sets of permutated IDP sequences.

Charge distribution， Proline content，Compaction index，Compaction responsiveness to κ，IDPs，Small-angle X-ray scatte