SNU-66 H765G substitution. No obvious morphological or growth phenotypes were observed. az160 mutation disrupts SNU-66(H765)/SNRP-27(M141) interaction, affecting alternative 5' splice site usage. Worm SNU-66(H765) and SNRP-27(M141) are homologous to human preB spliceosome components snu66(H734) and snrnp27(M141), respectively. Reference: Sarka K, et al. 2024. In submission.