[cellular_component] cytosol <sep> methylosome <sep> nucleus <sep> pICln-Sm protein complex <sep> precatalytic spliceosome <sep> SMN-Sm protein complex <sep> U1 snRNP <sep> U2 snRNP <sep> U2-type catalytic step 2 spliceosome <sep> U2-type precatalytic spliceosome <sep> U2-type spliceosomal complex <sep> U4 snRNP <sep> U4/U6 x U5 tri-snRNP complex <sep> U5 snRNP <sep> U7 snRNP