LSM11
Domain
The C-terminal SM 1 domain is both necessary for the binding to the Sm-binding site of U7 snRNA and U7 snRNP assembly (By similarity). The N-terminal domain is essential for histone pre-mRNA cleavage (By similarity). Amino acids 63-82 are sufficient to interact with ZNF473 (By similarity).
Function
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).
Involvement in disease
Aicardi-Goutieres syndrome 8
AGS8
A form of Aicardi-Goutieres syndrome, a genetically heterogeneous disease characterized by cerebral atrophy, leukoencephalopathy, intracranial calcifications, chronic cerebrospinal fluid (CSF) lymphocytosis, increased CSF alpha-interferon, and negative serologic investigations for common prenatal infection. Clinical features as thrombocytopenia, hepatosplenomegaly and elevated hepatic transaminases along with intermittent fever may erroneously suggest an infective process. Severe neurological dysfunctions manifest in infancy as progressive microcephaly, spasticity, dystonic posturing and profound psychomotor retardation. Death often occurs in early childhood. AGS8 inheritance is autosomal recessive.
None
The disease is caused by variants affecting the gene represented in this entry. Impaired histone 3'-end pre-mRNA processing caused by disease variants affects chromatin structure, relieving CGAS inhibition by nucleosomes (PubMed:33230297). This activates the cGAS-STING pathway, triggering type-I interferon production and autoinflammation (PubMed:33230297).
Sequence Similarities
Belongs to the snRNP Sm proteins family.
Cellular localization
- Nucleus
Alternative names
U7 snRNA-associated Sm-like protein LSm11, LSM11