ジャーナル: Cell / 年: 2022 タイトル: A mechanism for SARS-CoV-2 RNA capping and its inhibition by nucleotide analog inhibitors. 著者: Liming Yan / Yucen Huang / Ji Ge / Zhenyu Liu / Pengchi Lu / Bo Huang / Shan Gao / Junbo Wang / Liping Tan / Sihan Ye / Fengxi Yu / Weiqi Lan / Shiya Xu / Feng Zhou / Lei Shi / Luke W Guddat ...著者: Liming Yan / Yucen Huang / Ji Ge / Zhenyu Liu / Pengchi Lu / Bo Huang / Shan Gao / Junbo Wang / Liping Tan / Sihan Ye / Fengxi Yu / Weiqi Lan / Shiya Xu / Feng Zhou / Lei Shi / Luke W Guddat / Yan Gao / Zihe Rao / Zhiyong Lou / 要旨: Decoration of cap on viral RNA plays essential roles in SARS-CoV-2 proliferation. Here, we report a mechanism for SARS-CoV-2 RNA capping and document structural details at atomic resolution. The ...Decoration of cap on viral RNA plays essential roles in SARS-CoV-2 proliferation. Here, we report a mechanism for SARS-CoV-2 RNA capping and document structural details at atomic resolution. The NiRAN domain in polymerase catalyzes the covalent link of RNA 5' end to the first residue of nsp9 (termed as RNAylation), thus being an intermediate to form cap core (GpppA) with GTP catalyzed again by NiRAN. We also reveal that triphosphorylated nucleotide analog inhibitors can be bonded to nsp9 and fit into a previously unknown "Nuc-pocket" in NiRAN, thus inhibiting nsp9 RNAylation and formation of GpppA. S-loop (residues 50-KTN-52) in NiRAN presents a remarkable conformational shift observed in RTC bound with sofosbuvir monophosphate, reasoning an "induce-and-lock" mechanism to design inhibitors. These findings not only improve the understanding of SARS-CoV-2 RNA capping and the mode of action of NAIs but also provide a strategy to design antiviral drugs.
履歴
登録
2022年9月17日
登録サイト: PDBJ / 処理サイト: PDBJ
改定 1.0
2022年12月14日
Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2022年12月14日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Data content type: EM metadata Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata Group: Data collection / Data processing ...Data collection / Data processing / Database references / Experimental summary / Other / Source and taxonomy / Structure summary Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata カテゴリ: em_admin / em_entity_assembly ...em_admin / em_entity_assembly / em_imaging / em_software / entity / entity_poly / entity_src_gen / pdbx_entity_src_syn / struct_ref / struct_ref_seq / struct_ref_seq_dif Data content type: EM metadata / EM metadata ...EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata / EM metadata Item: _chem_comp.name / _em_admin.last_update ..._chem_comp.name / _em_admin.last_update / _em_entity_assembly.entity_id_list / _em_imaging.microscope_model / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_poly.pdbx_strand_id / _entity_poly.type / _entity_src_gen.entity_id / _entity_src_gen.pdbx_end_seq_num / _entity_src_gen.pdbx_gene_src_gene / _pdbx_entity_src_syn.entity_id / _pdbx_entity_src_syn.pdbx_end_seq_num / _struct_ref.db_code / _struct_ref.db_name / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_db_accession / _struct_ref.pdbx_seq_one_letter_code / _struct_ref_seq.db_align_beg / _struct_ref_seq.db_align_end / _struct_ref_seq.pdbx_auth_seq_align_beg / _struct_ref_seq.pdbx_auth_seq_align_end / _struct_ref_seq.pdbx_db_accession / _struct_ref_seq.pdbx_strand_id / _struct_ref_seq.ref_id / _struct_ref_seq.seq_align_beg / _struct_ref_seq.seq_align_end