A high mobility group protein from the Dipteran insects Ceratitis capitata and Bactrocera oleae.

Nuclei from Bactrocera oleae and Ceratitis capitata larvae contain a major protein that shares most of the characteristics of vertebrate high mobility group (HMG) proteins. Proteins are extracted from nuclei with 0.35 M NaCl, are soluble in 5% perchloric acid, are relatively small (molecular weight in the range of 10-16 kDa), and have both a high basic and a high acidic amino acid content.