[Two structural forms of histone octamer].
It has been found that histone octamer of calf thymus (H2A--H2B--H3--H4)2 can exist in two structural states--"loose" (2M NaCl) and "compact" one (4M NaCl). The compact state of the octamer is characterized by screening of part of tyrosyls for quenching effect of ions I-, longer relaxation time of tyrosyls, greater stability of histone H3 towards trypsinolysis, complete absence of interactions between histone H3 SH-groups and parachlormercuribenzoate.
D000818:Animals; D002417:Cattle; D004591:Electrophoresis, Polyacrylamide Gel; D006657:Histones / Q000032:analysis*; D006868:Hydrolysis; D007700:Kinetics; D046911:Macromolecular Substances; D013050:Spectrometry, Fluorescence; D013950:Thymus Gland / Q000032:analysis; D014357:Trypsin
D006657:Histones; D046911:Macromolecular Substances; D014357:Trypsin
Dve strukturnye formy oktamera gistonov.