| http://purl.uniprot.org/citations/18384044 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/18384044 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/18384044 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Citation |
| http://purl.uniprot.org/citations/18384044 | http://www.w3.org/2000/01/rdf-schema#comment | "Methylation of the N1 atom of guanosine at position 37 in tRNA, the position 3'-adjacent to the anticodon, generates the modified nucleoside m(1)G37. In archaea and eukaryotes, m(1)G37 synthesis is catalyzed by tRNA(m(1)G37)methyltransferase (archaeal or eukaryotic Trm5, a/eTrm5). Here we report the crystal structure of archaeal Trm5 (aTrm5) from Methanocaldococcus jannaschii (formerly known as Methanococcus jannaschii) in complex with the methyl donor analogue at 2.2 A resolution. The crystal structure revealed that the entire protein is composed of three structural domains, D1, D2, and D3. In the a/eTrm5 primary structures, D2 and D3 are highly conserved, while D1 is not conserved. The D3 structure is the Rossmann fold, which is the hallmark of the canonical class-I methyltransferases. The a/eTrm5-defining domain, D2, exhibits structural similarity to some class-I methyltransferases. In contrast, a DALI search with the D1 structure yielded no structural homologues. In the crystal structure, D3 contacts both D1 and D2. The residues involved in the D1:D3 interactions are not conserved, while those participating in the D2:D3 interactions are well conserved. D1 and D2 do not contact each other, and the linker between them is disordered. aTrm5 fragments corresponding to the D1 and D2-D3 regions were prepared in a soluble form. The NMR analysis of the D1 fragment revealed that D1 is well folded by itself, and it did not interact with either the D2-D3 fragment or the tRNA. The NMR analysis of the D2-D3 fragment revealed that it is well folded, independently of D1, and that it interacts with tRNA. Furthermore, the D2-D3 fragment was as active as the full-length enzyme for tRNA methylation. The positive charges on the surface of D2-D3 may be involved in tRNA binding. Therefore, these findings suggest that the interaction between D1 and D3 is not persistent, and that the D2-D3 region plays the major role in tRNA methylation."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.org/dc/terms/identifier | "doi:10.1002/prot.22019"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.org/dc/terms/identifier | "doi:10.1002/prot.22019"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Bessho Y."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Bessho Y."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Ito T."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Ito T."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Yokoyama S."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Yokoyama S."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Ishii R."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Ishii R."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Goto-Ito S."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Goto-Ito S."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Muto Y."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/author | "Muto Y."xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/date | "2008"xsd:gYear |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/date | "2008"xsd:gYear |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/name | "Proteins"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/name | "Proteins"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/pages | "1274-1289"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/pages | "1274-1289"xsd:string |
| http://purl.uniprot.org/citations/18384044 | http://purl.uniprot.org/core/title | "Crystal structure of archaeal tRNA(m(1)G37)methyltransferase aTrm5."xsd:string |