2026-06-17 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation citation_author em_admin _citation.country _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.journal_volume _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _citation_author.identifier_ORCID _citation_author.name _em_admin.last_update EXPERIMENTAL_SUMMARY citation citation_author em_admin _citation.country _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.journal_volume _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _citation_author.identifier_ORCID _citation_author.name _em_admin.last_update RCSB RCSB 2025-03-19 2026-04-01 2026-04-01 2026-06-17 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM136313 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) P20GM152281 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) P20GM103429 United States SsoPfMCM:DNA class 2a from DNA 2 Enemark EJ Rasouli S Myasnikov A DNA replication, helicase, MCM, REPLICATION Rasouli S Myasnikov A Enemark EJ Archaeal and eukaryotic MCM rings sequentially melt DNA for replication initiation. Nat Commun UK 17 2026 41916983 doi:10.1038/s41467-026-70961-8 2041-1723 Liebschner D Afonine PV Baker ML Bunkoczi G Chen VB Croll TI Hintze B Hung LW Jain S McCoy AJ Moriarty NW Oeffner RD Poon BK Prisant MG Read RJ Richardson JS Richardson DC Sammito MD Sobolev OV Stockwell DH Terwilliger TC Urzhumtsev AG Videau LL Williams CJ Adams PD Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix Acta Crystallogr., Sect. D: Biol. Crystallogr. DK 75 861 877 2019 31588918 doi:10.1107/S2059798319011471 0907-4449 0766 ABCRE6 9nuw FULLOVERLAP PDB 9NUH unspecified
SsoPfMCM:DNA Class 1a, Merged Particles
 PDB 9NUI unspecified
SsoPfMCM:DNA Class 1b, Merged Particles
 PDB 9NUJ unspecified
SsoPfMCM:DNA Class 1c, Merged Particles
 PDB 9NUK unspecified
SsoPfMCM:DNA Class 2a, Merged Particles
 PDB 9NUL unspecified
SsoPfMCM:DNA Class 2b, Merged Particles
 PDB 9NUM unspecified
SsoPfMCM:DNA Class 3, Merged Particles
 PDB 9NUN unspecified
SsoPfMCM:DNA Class 1a, DNA 1
 PDB 9NUO unspecified
SsoPfMCM:DNA Class 1b, DNA 1
 PDB 9NUP unspecified
SsoPfMCM:DNA Class 1c, DNA 1
 PDB 9NUQ unspecified
SsoPfMCM:DNA Class 2a, DNA 1
 PDB 9NUR unspecified
SsoPfMCM:DNA Class 2b, DNA 1
 PDB 9NUS unspecified
SsoPfMCM:DNA Class 3, DNA 1
 PDB 9NUT unspecified
SsoPfMCM:DNA class 1a from DNA 2
 PDB 9NUU unspecified
SsoPfMCM:DNA class 1b from DNA 2
 PDB 9NUV unspecified
SsoPfMCM:DNA class 1c from DNA 2
 PDB 9NUX unspecified
SsoPfMCM:DNA class 2b from DNA 2
 PDB 9NUY unspecified
SsoPfMCM:DNA class 3 from DNA 2
 EMDB EMD-49821 associated EM volume
SsoPfMCM:DNA class 2a from DNA 2
 Complex of MCM hexamer with DNA and Mg/ATP-gammaS Complex of MCM hexamer with DNA and Mg/ATP-gammaS 0 1 2
MCM is a Chimeric fusion of Saccharolobus solfataricus MCM N-terminal domain with Pyrococcus furious MCM ATPase domain
Saccharolobus solfataricus P2 Minichromosome maintenance protein MCM, Cell division control protein 21,DNA helicase Saccharolobus solfataricus P2 0.069472336
N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966),N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966),N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966),N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966),N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966),N-term Saccharolobus solfataricus P2, ATPase Pyrococcus furiosus DSM 3638 The protein construct exactly matches that of PDB 4R7Y. This is a chimeric fusion of the Saccharolobus solfataricus MCM N-terminal domain (SsoMCM amino acids 1-269) with the Pyrococcus furious MCM ATPase domain (PfMCM amino acids 257-361/729-966). The native PfMCM has an intein (PfMCM aa 362-728) that is removed. The expression construct for this protein has genetically removed the intein. To simplify model building and refinement, all amino acids were numbered sequentially based on the the SsoMCM sequence. Could the PfMCM portion have its amino acid numbers updated to match PDB 4R7Y? Segment 1: Current: (Q270-L374). Add 987. New: (Q1257-L1361) Segment 2: Current: (T375-D612). Add 1354. New: (T1729-D1966)
6 Escherichia coli LEVO SLEIPSKQIDYRDVFIEFLTTFKGNNNQNKYIERINELVAYRKKSLIIEFSDVLSFNENLAYEIINNTKIILPILEGALY DHILQLDPTYQRDIEKVHVRIVGIPRVIELRKIRSTDIGKLITIDGILVKVTPVKERIYKATYKHIHPDCMQEFEWPEDE EMPEVLEMPTICPKCGKPGQFRLIPEKTKLIDWQKAVIQERPEEVPSGQLPRQLEIILEDDLVDSARPGDRVKVTGILDI KQDSPVKRGSRAVFDIYMKVSSIEVSQKVLQELEISPEEEQIIKELAKRKDIVDAIVDSIAPAIYGYKEVKKGIALALFG GVSRKLPDGTRLRGDIHVLLVGDPGVAKSQILRYVANLAPRAIYTSGKSSSAAGLTAAAVRDEFTGGWVLEAGALVLADG GYALIDELDKMSDRDRSVIHEALEQQTISISKAGITATLNARTTVIAAANPKQGRFNRMKNPFEQIDLPPTLLSRFDLIF VLIDEPDDKIDSEVARHILRVRRGESEVVAPKIPHEILRKYIAYARKNIHPVISEEAMEEIEKYYVRMRKSVKKTKGEEE GIPPIPITARQLEALIRLSEAHARMRLSPIVTREDAREAIKLMEYTLKQIAMD Q9UXG1 Q8U3I4 Q8U3I4 3.6.4.12 DNA (60-MER) synthetic construct 0.018493824 2 (DT)(DC)(DC)(DG)(DT)(DC)(DT)(DC)(DA)(DC)(DA)(DG)(DT)(DA)(DA)(DC)(DA)(DA)(DC)(DC) (DC)(DT)(DC)(DC)(DG)(DC)(DC)(DT)(DG)(DA)(DT)(DC)(DA)(DG)(DG)(DC)(DG)(DG)(DA)(DG) (DG)(DG)(DT)(DT)(DG)(DT)(DT)(DA)(DC)(DT)(DG)(DT)(DG)(DA)(DG)(DA)(DC)(DG)(DG)(DA) DNA PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER 0.0005232469999999999 3 AGS MAGNESIUM ION 2.4305e-05 6 MG ZINC ION 6.5409e-05 6 ZN ADENOSINE-5'-DIPHOSPHATE 0.000427201 3 ADP water 1.8015e-05 21 HOH singleParticle particle 7.6 ETHANE TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 0.8 1.8 GATAN K3 (6k x 4k) 78.22 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 4R7Y 2.65 FSC 0.143 CUT-OFF 235648 MAXIMUM LIKELIHOOD MAXIMUM LIKELIHOOD emd_49821.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 276.48 276.48 276.48 90.0 90.0 90.0 X Y Z -0.6561383 2.2307458 -0.0010832374 0.08264976 1.08 1.08 1.08 0.381 AUTHOR Unsharpened map 4R7Y PDB experimental model emd_49821_additional_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 276.48 276.48 276.48 90.0 90.0 90.0 X Y Z -3.631608 8.542159 -0.0010832372 0.19783959 1.08 1.08 1.08 AUTHOR Sharpened map emd_49821_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 276.48 276.48 276.48 90.0 90.0 90.0 X Y Z -0.69473165 2.4594848 0.0034418334 0.09958492 1.08 1.08 1.08 AUTHOR half-map A emd_49821_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 276.48 276.48 276.48 90.0 90.0 90.0 X Y Z -0.71967864 2.5504735 0.0034605155 0.09956561 1.08 1.08 1.08 AUTHOR half-map B