Mus musculus Protein: Tgs1
Summary
InnateDB Protein IDBP-128355.6
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol Tgs1
Protein Name trimethylguanosine synthase homolog (S. cerevisiae)
Synonyms
Species Mus musculus
Ensembl Protein ENSMUSP00000054112
InnateDB Gene IDBG-128351 (Tgs1)
Protein Structure
UniProt Annotation
Function Catalyzes the 2 serial methylation steps for the conversion of the 7-monomethylguanosine (m(7)G) caps of snRNAs and snoRNAs to a 2,2,7-trimethylguanosine (m(2,2,7)G) cap structure. The enzyme is specific for guanine, and N7 methylation must precede N2 methylation. Hypermethylation of the m7G cap of U snRNAs leads to their concentration in nuclear foci, their colocalization with coilin and the formation of canonical Cajal bodies (CBs). Plays a role in transcriptional regulation (By similarity). {ECO:0000250}.
Subcellular Localization Cytoplasm {ECO:0000250}. Nucleus, Cajal body {ECO:0000269PubMed:11517327}.
Disease Associations
Tissue Specificity Ubiquitously expressed. {ECO:0000269PubMed:11517327}.
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 0 experimentally validated interaction(s) in this database.
They are also associated with 9 interaction(s) predicted by orthology.
Predicted by orthology
Total 9 [view]
Gene Ontology

Molecular Function
Accession GO Term
GO:0008168 methyltransferase activity
GO:0016740 transferase activity
Biological Process
GO:0001510 RNA methylation
GO:0006351 transcription, DNA-templated
GO:0006355 regulation of transcription, DNA-templated
GO:0009452 7-methylguanosine RNA capping
Cellular Component
GO:0005634 nucleus
GO:0005737 cytoplasm
GO:0015030 Cajal body
Protein Structure and Domains
PDB ID MGI:2151797
InterPro IPR000241 Putative RNA methylase domain
IPR003402 tRNA transferase Trm5/Tyw2
IPR019012 RNA cap guanine-N2 methyltransferase
IPR029063 S-adenosyl-L-methionine-dependent methyltransferase-like
PFAM PF01170
PF02475
PF09445
PRINTS
PIRSF
SMART
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt Q923W1
PhosphoSite PhosphoSite-Q923W1
TrEMBL Q8CCI3
UniProt Splice Variant
Entrez Gene 116940
UniGene Mm.482607
RefSeq NP_473430
MGI ID
MGI Symbol Tgs1
OMIM
CCDS CCDS17938
HPRD
IMGT
EMBL AF389908 AK033089 AL732617 BC026368 BC058183 BC075728
GenPept AAH26368 AAH58183 AAH75728 AAK84355 BAC28147 CAM17201