mRNA-capping enzyme - O55236 (MCE1_MOUSE)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for O55236: 3
 
Function
Bifunctional mRNA-capping enzyme exhibiting RNA 5'-triphosphatase activity in the N-terminal part and mRNA guanylyltransferase activity in the C-terminal part. Catalyzes the first two steps of cap formation: by removing the gamma-phosphate from the 5'-triphosphate end of nascent mRNA to yield a diphosphate end, and by transferring the gmp moiety of GTP to the 5'-diphosphate terminus. UniProt
Catalytic Activity
GTP + 5'pp-Pur-mRNA = diphosphate + G5'ppp-Pur-mRNA. UniProt
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Subunit Structure
Interacts with SUPT5H and RNMT (By similarity). Interacts with POLR2A (via C-terminus); this enhances guanylyltransferase activity. Binds (via GTase domain) to the elongating phosphorylated form of RNA polymerase II; can form direct interactions with the phosphorylated POLR2A C-terminal domain and indirect interactions via bound RNA. UniProt
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Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
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Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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