U2(RNU2) small nuclear RNA auxiliary factor 1-like 1 SP2 CCCH type zinc finger, RNA-binding motif and serine/arginine rich protein 1 U2 small nuclear ribonucleoprotein auxiliary factor 35 kDa subunit-related protein 2-like U2 small nuclear ribonucleoprotein auxiliary factor 35 kDa subunit-related protein 1