capped, methylated pre-mRNA:CBC Complex Spliceosomal E Complex Reactome DB_ID: 72057 Reactome Database ID Release 4372057 Reactome, http://www.reactome.org ReactomeREACT_4545 has a Stoichiometric coefficient of 1 U1 snRNP CC1.3 protein /3 RRM, RS UBA, Tudor - FLJ21007 SMC2 (P-loop, DA-box) ASR2B DnaJ hom. NP_055602 p68 DEAH protein hPrp19 HuR /3 RRM protein NFAR-2 protein