PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9576861-6 1998 Anti-2,2,7-trimethylguanosine affinity chromatography was an easy and efficient way of purifying the multi-snRNP complex from rat liver 40 S heterogeneous nuclear ribonucleoprotein particle (hnRNP)-containing sucrose gradient fractions. N(2),N(2),7-trimethylguanosine 5-29 heterogeneous nuclear ribonucleoprotein A2/B1 Rattus norvegicus 191-196