house mouse, human, mass spectrometry, nuclear mRNA splicing via spliceosome, prespliceosome, Q62241, snRNP, U1 snRNP, zinc finger U1_like
Interphase
splicing speckles
GO:0000398
nuclear mRNA splicing, via spliceosome
GO:0003734
small nuclear ribonucleoprotein
Yhc1
Saccharomyces cerevisiae