6irz

Crystal structure of the zebrafish cap-specific adenosine methyltransferase bound to SAH and m7G-capped RNA

spinqualitylabelsall models 6irz, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6irz is a 1 chain structure with sequence from Danio rerio. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: EDO, M7G, SAH Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CAPAM_DANRE Cap-specific adenosine methyltransferase that catalyzes formation of N(6),2'-O-dimethyladenosine cap (m6A(m)) by methylating the adenosine at the second transcribed position of capped mRNAs (PubMed:30467178). Publication Abstract from PubMed N (6)-methyladenosine (m(6)A), a major modification of mRNAs, plays critical roles in RNA metabolism and function. In addition to the internal m(6)A, N (6), 2'-O-dimethyladenosine (m(6)Am) is present at the transcription start nucleotide of capped mRNAs in vertebrates. However, its biogenesis and functional role remain elusive. Using a reverse genetics approach, we identified PCIF1, a factor that interacts with the Ser5-phosphorylated C-terminal domain of RNA polymerase II, as cap-specific adenosine methyltransferase (CAPAM) responsible for N (6)-methylation of m(6)Am. Crystal structure of CAPAM in complex with substrates revealed the molecular basis of cap-specific m(6)A formation. A transcriptome-wide analysis revealed that N (6)-methylation of m(6)Am promotes the translation of capped mRNAs. Thus, a cap-specific m(6)A writer promotes translation of mRNAs starting from m(6)Am. Cap-specific terminal N (6)-methylation of RNA by an RNA polymerase II-associated methyltransferase.,Akichika S, Hirano S, Shichino Y, Suzuki T, Nishimasu H, Ishitani R, Sugita A, Hirose Y, Iwasaki S, Nureki O, Suzuki T Science. 2018 Nov 22. pii: science.aav0080. doi: 10.1126/science.aav0080. PMID:30467178 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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