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- EMDB-68728: Structure of human MCM2-7 single hexamer with MCM3-WHD attached t... -

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Basic information

Entry
Database: EMDB / ID: EMD-68728
TitleStructure of human MCM2-7 single hexamer with MCM3-WHD attached to MCM2-CTD, containing Meier-Gorlin Syndrome mutation (MCM3-Q761L)
Map data
Sample
  • Complex: MCM single hexer with MCM3 Q761L mutation
    • Protein or peptide: DNA replication licensing factor MCM2
    • Protein or peptide: DNA replication licensing factor MCM3
    • Protein or peptide: DNA replication licensing factor MCM4
    • Protein or peptide: DNA replication licensing factor MCM6
    • Protein or peptide: DNA replication licensing factor MCM7
    • Protein or peptide: DNA replication licensing factor MCM5
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
KeywordsHelicase / REPLICATION
Function / homology
Function and homology information


Switching of origins to a post-replicative state / Unwinding of DNA / regulation of phosphorylation / nuclear origin of replication recognition complex / alpha DNA polymerase:primase complex / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / mitotic DNA replication / CMG complex / double-strand break repair via break-induced replication / MCM complex ...Switching of origins to a post-replicative state / Unwinding of DNA / regulation of phosphorylation / nuclear origin of replication recognition complex / alpha DNA polymerase:primase complex / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / mitotic DNA replication / CMG complex / double-strand break repair via break-induced replication / MCM complex / mitotic DNA replication initiation / regulation of DNA-templated DNA replication initiation / DNA strand elongation involved in DNA replication / DNA replication origin binding / cochlea development / Activation of the pre-replicative complex / DNA replication initiation / Activation of ATR in response to replication stress / cellular response to interleukin-4 / cellular response to epidermal growth factor stimulus / DNA helicase activity / Assembly of the pre-replicative complex / cellular response to xenobiotic stimulus / Orc1 removal from chromatin / nucleosome assembly / single-stranded DNA binding / histone binding / DNA helicase / chromosome, telomeric region / DNA replication / cell population proliferation / cilium / apoptotic process / DNA damage response / chromatin / perinuclear region of cytoplasm / enzyme binding / ATP hydrolysis activity / DNA binding / zinc ion binding / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus / cytoplasm / cytosol
Similarity search - Function
: / DNA replication licensing factor MCM2-like, winged-helix domain / : / MCM5, C-terminal domain / DNA replication licensing factor MCM7, winged helix / DNA replication licensing factor Mcm5 / MCM4, winged helix domain / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / : ...: / DNA replication licensing factor MCM2-like, winged-helix domain / : / MCM5, C-terminal domain / DNA replication licensing factor MCM7, winged helix / DNA replication licensing factor Mcm5 / MCM4, winged helix domain / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / : / MCM3-like, winged helix domain / DNA replication licensing factor Mcm6 / DNA replication licensing factor Mcm7 / Mcm6, C-terminal winged-helix domain / MCM6 C-terminal winged-helix domain / DNA replication licensing factor Mcm2 / Mini-chromosome maintenance protein 2 / Mini-chromosome maintenance, conserved site / MCM family signature. / MCM N-terminal domain / MCM N-terminal domain / MCM OB domain / MCM OB domain / Mini-chromosome maintenance protein / MCM, AAA-lid domain / MCM P-loop domain / MCM AAA-lid domain / MCM family C-terminal AAA(+) ATPase domain (MCM-CTD) profile. / minichromosome maintenance proteins / MCM domain / Nucleic acid-binding, OB-fold / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
DNA replication licensing factor MCM3 / DNA replication licensing factor MCM4 / DNA replication licensing factor MCM5 / DNA replication licensing factor MCM7 / DNA replication licensing factor MCM2 / DNA replication licensing factor MCM6
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsLam WH / Fan X / Zhai Y
Funding support Hong Kong, 1 items
OrganizationGrant numberCountry
The University Grants Committee, Research Grants Council (RGC) Hong Kong
CitationJournal: To Be Published
Title: Structure of human MCM2-7 single hexamer with MCM3-WHD containing Meier-Gorlin Syndrome mutation (Q761L) attached to MCM2-CTD
Authors: Lam WH / Fan X / Zhai Y
History
DepositionJan 26, 2026-
Header (metadata) releaseMay 20, 2026-
Map releaseMay 20, 2026-
UpdateMay 20, 2026-
Current statusMay 20, 2026Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_68728.png

Downloads & links

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Map

FileDownload / File: emd_68728.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 240 pix.
= 252. Å		1.05 Å/pix.
x 240 pix.
= 252. Å		1.05 Å/pix.
x 240 pix.
= 252. Å

Surface

Projections

Slices (1/3)

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.05 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.04
Minimum - Maximum-0.08981237 - 0.25734618
Average (Standard dev.)0.0019259959 (±0.010335474)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 251.99998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_68728_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: #1

Fileemd_68728_additional_1.map
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Histogram

Histogram (log scale)

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Half map: #2

Fileemd_68728_half_map_1.map
Projections & Slices
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Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_68728_half_map_2.map
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Sample components

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Entire : MCM single hexer with MCM3 Q761L mutation

EntireName: MCM single hexer with MCM3 Q761L mutation
Components
  • Complex: MCM single hexer with MCM3 Q761L mutation
    • Protein or peptide: DNA replication licensing factor MCM2
    • Protein or peptide: DNA replication licensing factor MCM3
    • Protein or peptide: DNA replication licensing factor MCM4
    • Protein or peptide: DNA replication licensing factor MCM6
    • Protein or peptide: DNA replication licensing factor MCM7
    • Protein or peptide: DNA replication licensing factor MCM5
  • Ligand: ADENOSINE-5'-TRIPHOSPHATE
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-DIPHOSPHATE

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Supramolecule #1: MCM single hexer with MCM3 Q761L mutation

SupramoleculeName: MCM single hexer with MCM3 Q761L mutation / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: DNA replication licensing factor MCM2

MacromoleculeName: DNA replication licensing factor MCM2 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 102.034102 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MAESSESFTM ASSPAQRRRG NDPLTSSPGR SSRRTDALTS SPGRDLPPFE DESEGLLGTE GPLEEEEDGE ELIGDGMERD YRAIPELDA YEAEGLALDD EDVEELTASQ REAAERAMRQ RDREAGRGLG RMRRGLLYDS DEEDEERPAR KRRQVERATE D GEEDEEMI ...String:
MAESSESFTM ASSPAQRRRG NDPLTSSPGR SSRRTDALTS SPGRDLPPFE DESEGLLGTE GPLEEEEDGE ELIGDGMERD YRAIPELDA YEAEGLALDD EDVEELTASQ REAAERAMRQ RDREAGRGLG RMRRGLLYDS DEEDEERPAR KRRQVERATE D GEEDEEMI ESIENLEDLK GHSVREWVSM AGPRLEIHHR FKNFLRTHVD SHGHNVFKER ISDMCKENRE SLVVNYEDLA AR EHVLAYF LPEAPAELLQ IFDEAALEVV LAMYPKYDRI TNHIHVRISH LPLVEELRSL RQLHLNQLIR TSGVVTSCTG VLP QLSMVK YNCNKCNFVL GPFCQSQNQE VKPGSCPECQ SAGPFEVNME ETIYQNYQRI RIQESPGKVA AGRLPRSKDA ILLA DLVDS CKPGDEIELT GIYHNNYDGS LNTANGFPVF ATVILANHVA KKDNKVAVGE LTDEDVKMIT SLSKDQQIGE KIFAS IAPS IYGHEDIKRG LALALFGGEP KNPGGKHKVR GDINVLLCGD PGTAKSQFLK YIEKVSSRAI FTTGQGASAV GLTAYV QRH PVSREWTLEA GALVLADRGV CLIDEFDKMN DQDRTSIHEA MEQQSISISK AGIVTSLQAR CTVIAAANPI GGRYDPS LT FSENVDLTEP IISRFDILCV VRDTVDPVQD EMLARFVVGS HVRHHPSNKE EEGLANGSAA EPAMPNTYGV EPLPQEVL K KYIIYAKERV HPKLNQMDQD KVAKMYSDLR KESMATGSIP ITVRHIESMI RMAEAHARIH LRDYVIEDDV NMAIRVMLE SFIDTQKFSV MRSMRKTFAR YLSFRRDNNE LLLFILKQLV AEQVTYQRNR FGAQQDTIEV PEKDLVDKAR QINIHNLSAF YDSELFRMN KFSHDLKRKM ILQQF

UniProtKB: DNA replication licensing factor MCM2

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Macromolecule #2: DNA replication licensing factor MCM3

MacromoleculeName: DNA replication licensing factor MCM3 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 91.095883 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MAGTVVLDDV ELREAQRDYL DFLDDEEDQG IYQSKVRELI SDNQYRLIVN VNDLRRKNEK RANRLLNNAF EELVAFQRAL KDFVASIDA TYAKQYEEFY VGLEGSFGSK HVSPRTLTSC FLSCVVCVEG IVTKCSLVRP KVVRSVHYCP ATKKTIERRY S DLTTLVAF ...String:
MAGTVVLDDV ELREAQRDYL DFLDDEEDQG IYQSKVRELI SDNQYRLIVN VNDLRRKNEK RANRLLNNAF EELVAFQRAL KDFVASIDA TYAKQYEEFY VGLEGSFGSK HVSPRTLTSC FLSCVVCVEG IVTKCSLVRP KVVRSVHYCP ATKKTIERRY S DLTTLVAF PSSSVYPTKD EENNPLETEY GLSVYKDHQT ITIQEMPEKA PAGQLPRSVD VILDDDLVDK AKPGDRVQVV GT YRCLPGK KGGYTSGTFR TVLIACNVKQ MSKDAQPSFS AEDIAKIKKF SKTRSKDIFD QLAKSLAPSI HGHDYVKKAI LCL LLGGVE RDLENGSHIR GDINILLIGD PSVAKSQLLR YVLCTAPRAI PTTGRGSSGV GLTAAVTTDQ ETGERRLEAG AMVL ADRGV VCIDEFDKMS DMDRTAIHEV MEQGRVTIAK AGIHARLNAR CSVLAAANPV YGRYDQYKTP MENIGLQDSL LSRFD LLFI MLDQMDPEQD REISDHVLRM HRYRAPGEQD GDAMPLGSAV DILATDDPNF SQEDQQDTQI YEKHDNLLHG TKKKKE KMV SAAFMKKYIH VAKIIKPVLT QESATYIAEE YSRLRSQDSM SSDTARTSPV TARTLETLIR LATAHAKARM SKTVDLQ DA EEAVELVQYA YFKKVLEKEK KRKKRSEDES ETEDEEEKSQ EDQEQKRKRR KTRQPDAKDG DSYDPYDFSD TEEEMPQV H TPKTADSQET KESQKVELSE SRLKAFKVAL LDVFREAHAL SIGMNRLTES INRDSEEPFS SVEIQAALSK MQDDNQVMV SEGIIFLI

UniProtKB: DNA replication licensing factor MCM3

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Macromolecule #3: DNA replication licensing factor MCM4

MacromoleculeName: DNA replication licensing factor MCM4 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 96.684852 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MSSPASTPSR RGSRRGRATP AQTPRSEDAR SSPSQRRRGE DSTSTGELQP MPTSPGVDLQ SPAAQDVLFS SPPQMHSSAI PLDFDVSSP LTYGTPSSRV EGTPRSGVRG TPVRQRPDLG SAQKGLQVDL QSDGAAAEDI VASEQSLGQK LVIWGTDVNV A ACKENFQR ...String:
MSSPASTPSR RGSRRGRATP AQTPRSEDAR SSPSQRRRGE DSTSTGELQP MPTSPGVDLQ SPAAQDVLFS SPPQMHSSAI PLDFDVSSP LTYGTPSSRV EGTPRSGVRG TPVRQRPDLG SAQKGLQVDL QSDGAAAEDI VASEQSLGQK LVIWGTDVNV A ACKENFQR FLQRFIDPLA KEEENVGIDI TEPLYMQRLG EINVIGEPFL NVNCEHIKSF DKNLYRQLIS YPQEVIPTFD MA VNEIFFD RYPDSILEHQ IQVRPFNALK TKNMRNLNPE DIDQLITISG MVIRTSQLIP EMQEAFFQCQ VCAHTTRVEM DRG RIAEPS VCGRCHTTHS MALIHNRSLF SDKQMIKLQE SPEDMPAGQT PHTVILFAHN DLVDKVQPGD RVNVTGIYRA VPIR VNPRV SNVKSVYKTH IDVIHYRKTD AKRLHGLDEE AEQKLFSEKR VELLKELSRK PDIYERLASA LAPSIYEHED IKKGI LLQL FGGTRKDFSH TGRGKFRAEI NILLCGDPGT SKSQLLQYVY NLVPRGQYTS GKGSSAVGLT AYVMKDPETR QLVLQT GAL VLSDNGICCI DEFDKMNEST RSVLHEVMEQ QTLSIAKAGI ICQLNARTSV LAAANPIESQ WNPKKTTIEN IQLPHTL LS RFDLIFLLLD PQDEAYDRRL AHHLVALYYQ SEEQAEEELL DMAVLKDYIA YAHSTIMPRL SEEASQALIE AYVDMRKI G SSRGMVSAYP RQLESLIRLA EAHAKVRLSN KVEAIDVEEA KRLHREALKQ SATDPRTGIV DISILTTGMS ATSRKRKEE LAEALKKLIL SKGKTPALKY QQLFEDIRGQ SDIAITKDMF EEALRALADD DFLTVTGKTV RLL

UniProtKB: DNA replication licensing factor MCM4

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Macromolecule #4: DNA replication licensing factor MCM6

MacromoleculeName: DNA replication licensing factor MCM6 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 93.010273 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MDLAAAAEPG AGSQHLEVRD EVAEKCQKLF LDFLEEFQSS DGEIKYLQLA EELIRPERNT LVVSFVDLEQ FNQQLSTTIQ EEFYRVYPY LCRALKTFVK DRKEIPLAKD FYVAFQDLPT RHKIRELTSS RIGLLTRISG QVVRTHPVHP ELVSGTFLCL D CQTVIRDV ...String:
MDLAAAAEPG AGSQHLEVRD EVAEKCQKLF LDFLEEFQSS DGEIKYLQLA EELIRPERNT LVVSFVDLEQ FNQQLSTTIQ EEFYRVYPY LCRALKTFVK DRKEIPLAKD FYVAFQDLPT RHKIRELTSS RIGLLTRISG QVVRTHPVHP ELVSGTFLCL D CQTVIRDV EQQFKYTQPN ICRNPVCANR RRFLLDTNKS RFVDFQKVRI QETQAELPRG SIPRSLEVIL RAEAVESAQA GD KCDFTGT LIVVPDVSKL STPGARAETN SRVSGVDGYE TEGIRGLRAL GVRDLSYRLV FLACCVAPTN PRFGGKELRD EEQ TAESIK NQMTVKEWEK VFEMSQDKNL YHNLCTSLFP TIHGNDEVKR GVLLMLFGGV PKTTGEGTSL RGDINVCIVG DPST AKSQF LKHVEEFSPR AVYTSGKASS AAGLTAAVVR DEESHEFVIE AGALMLADNG VCCIDEFDKM DVRDQVAIHE AMEQQ TISI TKAGVKATLN ARTSILAAAN PISGHYDRSK SLKQNINLSA PIMSRFDLFF ILVDECNEVT DYAIARRIVD LHSRIE ESI DRVYSLDDIR RYLLFARQFK PKISKESEDF IVEQYKHLRQ RDGSGVTKSS WRITVRQLES MIRLSEAMAR MHCCDEV QP KHVKEAFRLL NKSIIRVETP DVNLDQEEEI QMEVDEGAGG INGHADSPAP VNGINGYNED INQESAPKAS LRLGFSEY C RISNLIVLHL RKVEEEEDES ALKRSELVNW YLKEIESEID SEEELINKKR IIEKVIHRLT HYDHVLIELT QAGLKGSTE GSESYEEDPY LVVNPNYLLE D

UniProtKB: DNA replication licensing factor MCM6

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Macromolecule #5: DNA replication licensing factor MCM7

MacromoleculeName: DNA replication licensing factor MCM7 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 81.411875 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MALKDYALEK EKVKKFLQEF YQDDELGKKQ FKYGNQLVRL AHREQVALYV DLDDVAEDDP ELVDSICENA RRYAKLFADA VQELLPQYK EREVVNKDVL DVYIEHRLMM EQRSRDPGMV RSPQNQYPAE LMRRFELYFQ GPSSNKPRVI REVRADSVGK L VTVRGIVT ...String:
MALKDYALEK EKVKKFLQEF YQDDELGKKQ FKYGNQLVRL AHREQVALYV DLDDVAEDDP ELVDSICENA RRYAKLFADA VQELLPQYK EREVVNKDVL DVYIEHRLMM EQRSRDPGMV RSPQNQYPAE LMRRFELYFQ GPSSNKPRVI REVRADSVGK L VTVRGIVT RVSEVKPKMV VATYTCDQCG AETYQPIQSP TFMPLIMCPS QECQTNRSGG RLYLQTRGSR FIKFQEMKMQ EH SDQVPVG NIPRSITVLV EGENTRIAQP GDHVSVTGIF LPILRTGFRQ VVQGLLSETY LEAHRIVKMN KSEDDESGAG ELT REELRQ IAEEDFYEKL AASIAPEIYG HEDVKKALLL LLVGGVDQSP RGMKIRGNIN ICLMGDPGVA KSQLLSYIDR LAPR SQYTT GRGSSGVGLT AAVLRDSVSG ELTLEGGALV LADQGVCCID EFDKMAEADR TAIHEVMEQQ TISIAKAGIL TTLNA RCSI LAAANPAYGR YNPRRSLEQN IQLPAALLSR FDLLWLIQDR PDRDNDLRLA QHITYVHQHS RQPPSQFEPL DMKLMR RYI AMCREKQPMV PESLADYITA AYVEMRREAW ASKDATYTSA RTLLAILRLS TALARLRMVD VVEKEDVNEA IRLMEMS KD SLLGDKGQTA RTQRPADVIF ATVRELVSGG RSVRFSEAEQ RCVSRGFTPA QFQAALDEYE ELNVWQVNAS RTRITFV

UniProtKB: DNA replication licensing factor MCM7

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Macromolecule #6: DNA replication licensing factor MCM5

MacromoleculeName: DNA replication licensing factor MCM5 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA helicase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 82.406633 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MSGFDDPGIF YSDSFGGDAQ ADEGQARKSQ LQRRFKEFLR QYRVGTDRTG FTFKYRDELK RHYNLGEYWI EVEMEDLASF DEDLADYLY KQPAEHLQLL EEAAKEVADE VTRPRPSGEE VLQDIQVMLK SDASPSSIRS LKSDMMSHLV KIPGIIIAAS A VRAKATRI ...String:
MSGFDDPGIF YSDSFGGDAQ ADEGQARKSQ LQRRFKEFLR QYRVGTDRTG FTFKYRDELK RHYNLGEYWI EVEMEDLASF DEDLADYLY KQPAEHLQLL EEAAKEVADE VTRPRPSGEE VLQDIQVMLK SDASPSSIRS LKSDMMSHLV KIPGIIIAAS A VRAKATRI SIQCRSCRNT LTNIAMRPGL EGYALPRKCN TDQAGRPKCP LDPYFIMPDK CKCVDFQTLK LQELPDAVPH GE MPRHMQL YCDRYLCDKV VPGNRVTIMG IYSIKKFGLT TSRGRDRVGV GIRSSYIRVL GIQVDTDGSG RSFAGAVSPQ EEE EFRRLA ALPNVYEVIS KSIAPSIFGG TDMKKAIACL LFGGSRKRLP DGLTRRGDIN LLMLGDPGTA KSQLLKFVEK CSPI GVYTS GKGSSAAGLT ASVMRDPSSR NFIMEGGAMV LADGGVVCID EFDKMREDDR VAIHEAMEQQ TISIAKAGIT TTLNS RCSV LAAANSVFGR WDETKGEDNI DFMPTILSRF DMIFIVKDEH NEERDVMLAK HVITLHVSAL TQTQAVEGEI DLAKLK KFI AYCRVKCGPR LSAEAAEKLK NRYIIMRSGA RQHERDSDRR SSIPITVRQL EAIVRIAEAL SKMKLQPFAT EADVEEA LR LFQVSTLDAA LSGTLSGVEG FTSQEDQEML SRIEKQLKRR FAIGSQVSEH SIIKDFTKQK YPEHAIHKVL QLMLRRGE I QHRMQRKVLY RLK

UniProtKB: DNA replication licensing factor MCM5

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Macromolecule #7: ADENOSINE-5'-TRIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 7 / Number of copies: 3 / Formula: ATP
Molecular weightTheoretical: 507.181 Da
Chemical component information

ChemComp-ATP:
ADENOSINE-5'-TRIPHOSPHATE / ATP, energy-carrying molecule*YM

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Macromolecule #8: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 8 / Number of copies: 4 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #9: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 9 / Number of copies: 3 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #10: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 10 / Number of copies: 2 / Formula: ADP
Molecular weightTheoretical: 427.201 Da
Chemical component information

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 45 sec.
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 1774 / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Calibrated magnification: 47170 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 1.2 µm / Nominal magnification: 81000
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 346061
CTF correctionSoftware - Name: cryoSPARC (ver. v4.7.1) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7w1y

Final reconstructionNumber classes used: 3 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. v4.7.1) / Number images used: 119836
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. v4.7.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. v4.7.1)
Final 3D classificationNumber classes: 5 / Avg.num./class: 39866 / Software - Name: cryoSPARC (ver. v4.7.1)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

7w1y


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT / Overall B value: 116.6
Output model

PDB-22vt:
Structure of human MCM2-7 single hexamer with MCM3-WHD attached to MCM2-CTD, containing Meier-Gorlin Syndrome mutation (MCM3-Q761L)

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