LSM10 is a 14 kDa polypeptide that is a member of the Sm/Lsm protein family. Like U7 snRNA, LSM10 is enriched in Cajal or coiled bodies (CBs) in the nucleus. LSM10 associates with the U7 snRNP and this interaction is dictated by the special Sm binding site of U7 snRNA.
Function:
Appears to function in the U7 snRNP complex that is involved in histone 3'-end processing. Increases U7 snRNA levels but not histone 3'-end pre-mRNA processing activity, when overexpressed. Required for cell cycle progression from G1 to S phases. Binds specifically to U7 snRNA. Binds to the downstream cleavage product (DCP) of histone pre-mRNA in a U7 snRNP dependent manner.
Subunit:
Component of the heptameric ring U7 snRNP complex, or U7 Sm protein core complex, at least composed of LSM10, LSM11, SNRPB, SNRPD3, SNRPE, SNRPF, SNRPG and U7 snRNA. Formation of the U7 snRNP is an ATP-dependent process mediated by a specialized SMN complex containing at least the Sm protein core complex and additionally, the U7-specific LSM10 and LSM11 proteins. Interacts with CLNS1A and SMN.
Subcellular Location:
Nuclear
Post-translational modifications:
Not methylated. Methylation is not necessary for interaction with SMN.
Similarity:
Belongs to the snRNP Sm proteins family.
SWISS:
Q969L4
Gene ID:
84967
Database links:
Entrez Gene: 84967 Human
Entrez Gene: 116748 Mouse
Entrez Gene: 366468 Rat
SwissProt: Q969L4 Human
SwissProt: Q8QZX5 Mouse
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