[Use of high performance liquid chromatography for analysis of subfractions of lysine-rich histone H1 from Baikal fish--the sand sculpin Cottus kessleri Dyb].

: High performance liquid chromatography using PMSS-C18 resin was applied to separate variant-complicated histone H1 from liver of a Baikal lake endemic fish sand sculpin (Cottus Kessleri Dybow). Total H1 was resolved into 3 main fractions. One of them was resolved into two sub-fractions by rechromatography. All the fractions and sub-fractions obtained were studied for their amino acid composition. One of the subfractions (H1(3] contained no tyrosine residues, but very much (20%) proline. Hence, this subfraction may be a new type of lysine-rich histone H1.