Component of the U7 snRNP complex that is involved in the histone 3'-end pre-mRNA processing (PubMed:11574479, PubMed:16914750, PubMed:33230297). Increases U7 snRNA levels but not histone 3'-end pre- mRNA processing activity, when overexpressed (PubMed:11574479, PubMed:16914750). Required for cell cycle progression from G1 to S phases (By similarity). Binds specifically to the Sm-binding site of U7 snRNA (PubMed:11574479, PubMed:16914750). {ECO:0000250|UniProtKB:Q8BUV6, ECO:0000269|PubMed:11574479, ECO:0000269|PubMed:16914750, ECO:0000269|PubMed:33230297}. This is the function of Ensembl gene identifier ENSG00000155858 (LSM11, LSM11, U7 small nuclear RNA associated).