PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
561660-4	1977	If histone H1 is selectively removed with 50-100 mM NaCl in 50 mM sodium phosphate buffer (pH 7.0) in the presence of the ion-exchange resin AG 50 W - X2, chromatin appears as "beads-on-a-string" with the nucleosomes separated from each other by distances of about 150-200 A.	sodium phosphate	66-82	H1.0 linker histone	Homo sapiens	3-13	
7207472-2	1980	We have not modified this procedure so that the nucleosome is treated with the cation exchange resin in two steps, first in 50 mM sodium phosphate buffer and then in 50 mM sodium phosphate and 50 mM NaCl whereby histone H 1 is selectively removed without a release of free DNA at low resin concentrations.	sodium phosphate	130-146	H1.0 linker histone	Homo sapiens	212-223	
7207472-2	1980	We have not modified this procedure so that the nucleosome is treated with the cation exchange resin in two steps, first in 50 mM sodium phosphate buffer and then in 50 mM sodium phosphate and 50 mM NaCl whereby histone H 1 is selectively removed without a release of free DNA at low resin concentrations.	sodium phosphate	172-188	H1.0 linker histone	Homo sapiens	212-223