The methods available for analysis of the chromatin of Schizosaccharom
yces pombe are time consuming (>8 h) and/or result in some degradation
of the chromatin. Here we report an optimised method for the preparat
ion of spheroplasts and the isolation of nuclei which takes <25 min an
d is suitable for analysis of chromatin structure by micrococcal nucle
ase, restriction endonuclease or by immunoprecipitation.