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- EMDB-51982: Pooled 50S subunit d126_(L29)-/(L22)- precursor states supplement... -

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Basic information

Entry
Database: EMDB / ID: EMD-51982
TitlePooled 50S subunit d126_(L29)-/(L22)- precursor states supplemented with Api137
Map data
Sample
  • Complex: Pooled pre50S substates derived from Api137-treated cells supplemented with Api137 - truncated model with invariant parts between substates
    • Protein or peptide: Large ribosomal subunit protein uL13
    • Protein or peptide: Large ribosomal subunit protein bL17
    • Protein or peptide: Large ribosomal subunit protein bL20
    • Protein or peptide: Large ribosomal subunit protein bL21
    • RNA: 23S ribosomal RNA
    • Protein or peptide: 50S ribosomal protein L3
    • Protein or peptide: Large ribosomal subunit protein uL4
    • Protein or peptide: Large ribosomal subunit protein uL15
    • Protein or peptide: Large ribosomal subunit protein uL24
Keywordsribosome / antimicrobial peptide / RNA / ribosomal protein / PrAMP / proline-rich peptide / antibiotics / 50S / Api137
Function / homology
Function and homology information


transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / translation repressor activity / mRNA regulatory element binding translation repressor activity / ribosome assembly / DNA-templated transcription termination / mRNA 5'-UTR binding / large ribosomal subunit ...transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / negative regulation of cytoplasmic translation / translation repressor activity / mRNA regulatory element binding translation repressor activity / ribosome assembly / DNA-templated transcription termination / mRNA 5'-UTR binding / large ribosomal subunit / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / zinc ion binding / cytosol / cytoplasm
Similarity search - Function
Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / : / Ribosomal protein L17 signature. / : / Ribosomal protein L20 signature. / Ribosomal protein L20 / Ribosomal protein L20 / Ribosomal protein L20, C-terminal / Ribosomal protein L21 ...Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / : / Ribosomal protein L17 signature. / : / Ribosomal protein L20 signature. / Ribosomal protein L20 / Ribosomal protein L20 / Ribosomal protein L20, C-terminal / Ribosomal protein L21 / Ribosomal protein L17 / Ribosomal protein L17 superfamily / Ribosomal protein L17 / Ribosomal proteins 50S L24/mitochondrial 39S L24 / Ribosomal protein L21-like / L21-like superfamily / Ribosomal prokaryotic L21 protein / Ribosomal protein L24 / Ribosomal protein L13, bacterial-type / Ribosomal protein L3, bacterial/organelle-type / Ribosomal protein L15, bacterial-type / 50S ribosomal protein uL4 / Ribosomal protein L15, conserved site / Ribosomal protein L15 signature. / Ribosomal protein L13 signature. / Ribosomal protein L13, conserved site / Ribosomal protein L24 signature. / KOW (Kyprides, Ouzounis, Woese) motif. / Ribosomal protein L24/L26, conserved site / Ribosomal protein L13 / Ribosomal protein L13 / Ribosomal protein L13 superfamily / Ribosomal protein L15 / Ribosomal proteins 50S-L15, 50S-L18e, 60S-L27A / Ribosomal protein L26/L24, KOW domain / Ribosomal protein L3, conserved site / Ribosomal protein L3 signature. / Ribosomal protein L3 / Ribosomal protein L3 / Ribosomal protein L18e/L15P / Ribosomal L18e/L15P superfamily / Ribosomal protein L4/L1e / Ribosomal protein L4 domain superfamily / Ribosomal protein L4/L1 family / Translation protein SH3-like domain superfamily / KOW motif / KOW / Translation protein, beta-barrel domain superfamily / Ribosomal protein L2, domain 2
Similarity search - Domain/homology
Large ribosomal subunit protein uL15 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.49 Å
AuthorsLauer S / Nikolay R / Spahn CMT
Funding support Germany, 4 items
OrganizationGrant numberCountry
German Federal Ministry for Education and Research16GW0300 Germany
German Federal Ministry for Education and Research16GW0299K Germany
German Research Foundation (DFG)EXC2008/1-390540038 Germany
German Research Foundation (DFG)INST 335/588-1 FUGG Germany
CitationJournal: Nat Commun / Year: 2025
Title: The proline-rich antimicrobial peptide Api137 disrupts large ribosomal subunit assembly and induces misfolding.
Authors: Simon Malte Lauer / Jakob Gasse / Andor Krizsan / Maren Reepmeyer / Thiemo Sprink / Rainer Nikolay / Christian M T Spahn / Ralf Hoffmann /
Abstract: The proline-rich antimicrobial designer peptide Api137 inhibits protein expression in bacteria by binding simultaneously to the ribosomal polypeptide exit tunnel and the release factor (RF), ...The proline-rich antimicrobial designer peptide Api137 inhibits protein expression in bacteria by binding simultaneously to the ribosomal polypeptide exit tunnel and the release factor (RF), depleting the cellular RF pool and leading to ribosomal arrest at stop codons. This study investigates the additional effect of Api137 on the assembly of ribosomes using an Escherichia coli reporter strain expressing one ribosomal protein per 30S and 50S subunit tagged with mCherry and EGFP, respectively. Separation of cellular extracts derived from cells exposed to Api137 in a sucrose gradient reveals elevated levels of partially assembled and not fully matured precursors of the 50S subunit (pre-50S). High-resolution structures obtained by cryogenic electron microscopy demonstrate that a large proportion of pre-50S states are missing up to five proteins (uL22, bL32, uL29, bL23, and uL16) and have misfolded helices in 23S rRNA domain IV. These data suggest a second mechanism for Api137, wherein it disrupts 50S subunit assembly by inducing the formation of misfolded precursor particles potentially incapable of evolving into active ribosomes, suggesting a bactericidal mechanism.
History
DepositionNov 4, 2024-
Header (metadata) releaseJan 22, 2025-
Map releaseJan 22, 2025-
UpdateJan 22, 2025-
Current statusJan 22, 2025Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_51982.png

Downloads & links

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Map

FileDownload / File: emd_51982.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
2 Å/pix.
x 200 pix.
= 399.6 Å		2 Å/pix.
x 200 pix.
= 399.6 Å		2 Å/pix.
x 200 pix.
= 399.6 Å

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.998 Å
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Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.343
Minimum - Maximum-0.6945392 - 2.1584086
Average (Standard dev.)-0.012716556 (±0.10909414)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions200200200
Spacing200200200
CellA=B=C: 399.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_51982_msk_1.map
Projections & Slices
AxesZYX

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Density Histograms

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Half map: #1

Fileemd_51982_half_map_1.map
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Half map: #2

Fileemd_51982_half_map_2.map
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Sample components

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Entire : Pooled pre50S substates derived from Api137-treated cells supplem...

EntireName: Pooled pre50S substates derived from Api137-treated cells supplemented with Api137 - truncated model with invariant parts between substates
Components
  • Complex: Pooled pre50S substates derived from Api137-treated cells supplemented with Api137 - truncated model with invariant parts between substates
    • Protein or peptide: Large ribosomal subunit protein uL13
    • Protein or peptide: Large ribosomal subunit protein bL17
    • Protein or peptide: Large ribosomal subunit protein bL20
    • Protein or peptide: Large ribosomal subunit protein bL21
    • RNA: 23S ribosomal RNA
    • Protein or peptide: 50S ribosomal protein L3
    • Protein or peptide: Large ribosomal subunit protein uL4
    • Protein or peptide: Large ribosomal subunit protein uL15
    • Protein or peptide: Large ribosomal subunit protein uL24

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Supramolecule #1: Pooled pre50S substates derived from Api137-treated cells supplem...

SupramoleculeName: Pooled pre50S substates derived from Api137-treated cells supplemented with Api137 - truncated model with invariant parts between substates
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#9
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100

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Macromolecule #1: Large ribosomal subunit protein uL13

MacromoleculeName: Large ribosomal subunit protein uL13 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 16.050606 KDa
SequenceString:
MKTFTAKPET VKRDWYVVDA TGKTLGRLAT ELARRLRGKH KAEYTPHVDT GDYIIVLNAD KVAVTGNKRT DKVYYHHTGH IGGIKQATF EEMIARRPER VIEIAVKGML PKGPLGRAMF RKLKVYAGNE HNHAAQQPQV LDI

UniProtKB: Large ribosomal subunit protein uL13

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Macromolecule #2: Large ribosomal subunit protein bL17

MacromoleculeName: Large ribosomal subunit protein bL17 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 13.721938 KDa
SequenceString:
MRHRKSGRQL NRNSSHRQAM FRNMAGSLVR HEIIKTTLPK AKELRRVVEP LITLAKTDSV ANRRLAFART RDNEIVAKLF NELGPRFAS RAGGYTRILK CGFRAGDNAP MAYIELVDRS E

UniProtKB: Large ribosomal subunit protein bL17

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Macromolecule #3: Large ribosomal subunit protein bL20

MacromoleculeName: Large ribosomal subunit protein bL20 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 13.396828 KDa
SequenceString:
ARVKRGVIAR ARHKKILKQA KGYYGARSRV YRVAFQAVIK AGQYAYRDRR QRKRQFRQLW IARINAAARQ NGISYSKFIN GLKKASVEI DRKILADIAV FDKVAFTALV EKAKAALA

UniProtKB: Large ribosomal subunit protein bL20

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Macromolecule #4: Large ribosomal subunit protein bL21

MacromoleculeName: Large ribosomal subunit protein bL21 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 11.586374 KDa
SequenceString:
MYAVFQSGGK QHRVSEGQTV RLEKLDIATG ETVEFAEVLM IANGEEVKIG VPFVDGGVIK AEVVAHGRGE KVKIVKFRRR KHYRKQQGH RQWFTDVKIT GISA

UniProtKB: Large ribosomal subunit protein bL21

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Macromolecule #6: 50S ribosomal protein L3

MacromoleculeName: 50S ribosomal protein L3 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 22.277535 KDa
SequenceString: MIGLVGKKVG MTRIFTEDGV SIPVTVIEVE ANRVTQVKDL ANDGYRAIQV TTGAKKANRV TKPEAGHFAK AGVEAGRGLW EFRLAEGEE FTVGQSISVE LFADVKKVDV TGTSKGKGFA GTVKRWNFRT QDATHGNSLS HRVPGSIGQN QTPGKVFKGK K MAGQMGNE ...String:
MIGLVGKKVG MTRIFTEDGV SIPVTVIEVE ANRVTQVKDL ANDGYRAIQV TTGAKKANRV TKPEAGHFAK AGVEAGRGLW EFRLAEGEE FTVGQSISVE LFADVKKVDV TGTSKGKGFA GTVKRWNFRT QDATHGNSLS HRVPGSIGQN QTPGKVFKGK K MAGQMGNE RVTVQSLDVV RVDAERNLLL VKGAVPGATG SDLIVKPAVK A

UniProtKB: Large ribosomal subunit protein uL3

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Macromolecule #7: Large ribosomal subunit protein uL4

MacromoleculeName: Large ribosomal subunit protein uL4 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 22.121566 KDa
SequenceString: MELVLKDAQS ALTVSETTFG RDFNEALVHQ VVVAYAAGAR QGTRAQKTRA EVTGSGKKPW RQKGTGRARS GSIKSPIWRS GGVTFAARP QDHSQKVNKK MYRGALKSIL SELVRQDRLI VVEKFSVEAP KTKLLAQKLK DMALEDVLII TGELDENLFL A ARNLHKVD ...String:
MELVLKDAQS ALTVSETTFG RDFNEALVHQ VVVAYAAGAR QGTRAQKTRA EVTGSGKKPW RQKGTGRARS GSIKSPIWRS GGVTFAARP QDHSQKVNKK MYRGALKSIL SELVRQDRLI VVEKFSVEAP KTKLLAQKLK DMALEDVLII TGELDENLFL A ARNLHKVD VRDATGIDPV SLIAFDKVVM TADAVKQVEE MLA

UniProtKB: Large ribosomal subunit protein uL4

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Macromolecule #8: Large ribosomal subunit protein uL15

MacromoleculeName: Large ribosomal subunit protein uL15 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 14.877273 KDa
SequenceString:
RLNTLSPAEG SKKAGKRLGR GIGSGLGKTG GRGHKGQKSR SGGGVRRGFE GGQMPLYRRL PKFGFTSRKA AITAEIRLSD LAKVEGGVV DLNTLKAANI IGIQIEFAKV ILAGEVTTPV TVRGLRVTKG ARAAIEAAGG KIEE

UniProtKB: Large ribosomal subunit protein uL15

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Macromolecule #9: Large ribosomal subunit protein uL24

MacromoleculeName: Large ribosomal subunit protein uL24 / type: protein_or_peptide / ID: 9 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 11.078874 KDa
SequenceString:
AAKIRRDDEV IVLTGKDKGK RGKVKNVLSS GKVIVEGINL VKKHQKPVPA LNQPGGIVEK EAAIQVSNVA IFNAATGKAD RVGFRFEDG KKVRFFKSNS ETI

UniProtKB: Large ribosomal subunit protein uL24

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Macromolecule #5: 23S ribosomal RNA

MacromoleculeName: 23S ribosomal RNA / type: rna / ID: 5 / Number of copies: 1
Source (natural)Organism: Escherichia coli (E. coli) / Strain: MC4100
Molecular weightTheoretical: 941.619438 KDa
SequenceString: GGUUAAGCGA CUAAGCGUAC ACGGUGGAUG CCCUGGCAGU CAGAGGCGAU GAAGGACGUG CUAAUCUGCG AUAAGCGUCG GUAAGGUGA UAUGAACCGU UAUAACCGGC GAUUUCCGAA UGGGGAAACC CAGUGUGUUU CGACACACUA UCAUUAACUG A AUCCAUAG ...String:
GGUUAAGCGA CUAAGCGUAC ACGGUGGAUG CCCUGGCAGU CAGAGGCGAU GAAGGACGUG CUAAUCUGCG AUAAGCGUCG GUAAGGUGA UAUGAACCGU UAUAACCGGC GAUUUCCGAA UGGGGAAACC CAGUGUGUUU CGACACACUA UCAUUAACUG A AUCCAUAG GUUAAUGAGG CGAACCGGGG GAACUGAAAC AUCUAAGUAC CCCGAGGAAA AGAAAUCAAC CGAGAUUCCC CC AGUAGCG GCGAGCGAAC GGGGAGCAGC CCAGAGCCUG AAUCAGUGUG UGUGUUAGUG GAAGCGUCUG GAAAGGCGCG CGA UACAGG GUGACAGCCC CGUACACAAA AAUGCACAUG CUGUGAGCUC GAUGAGUAGG GCGGGACACG UGGUAUCCUG UCUG AAUAU GGGGGGACCA UCCUCCAAGG CUAAAUACUC CUGACUGACC GAUAGUGAAC CAGUACCGUG AGGGAAAGGC GAAAA GAAC CCCGGCGAGG GGAGUGAAAA AGAACCUGAA ACCGUGUACG UACAAGCAGU GGGAGCACGC UUAGGCGUGU GACUGC GUA CCUUUUGUAU AAUGGGUCAG CGACUUAUAU UCUGUAGCAA GGUUAACCGA AUAGGGGAGC CGAAGGGAAA CCGAGUC UU AACUGGGCGU UAAGUUGCAG GGUAUAGACC CGAAACCCGG UGAUCUAGCC AUGGGCAGGU UGAAGGUUGG GUAACACU A ACUGGAGGAC CGAACCGACU AAUGUUGAAA AAUUAGCGGA UGACUUGUGG CUGGGGGUGA AAGGCCAAUC AAACCGGGA GAUAGCUGGU UCUCCCCGAA AGCUAUAUAA GUAGCGCCUC GUGAAUUCAU CUCCGGGGGU AGAGCACUGU UUCGGCAAGG GGGUCAUCC CGACUUACCA ACCCGAUGCA AACUGCGAAU ACCGGAGAAU GUUAUCACGG GAGACACACG GCGGGUGCUA A CGUCCGUC GUGAAGAGGG AAACAACCCA GACCGCCAGC UAAGGUCCCA AAGUCAUGGU UAAGUGGGAA ACGAUGUGGG AA GGCCCAG ACAGCCAGGA UGUUGGCUUA GAAGCAGCCA UCAUUUAAAG AAAGCGUAAU AGCUCACUGG UCGAGUCGGC CUG CGCGGA AGAUGUAACG GGGCUAAACC AUGCACCGAA GCUGCGGCAG CGACGCUUAU GCGUUGUUGG GUAGGGGAGC GUUC UGUAA GCCUGCGAAG GUGUGCUGUG AGGCAUGCUG GAGGUAUCAG AAGUGCGAAU GCUGACAUAA GUAACGAUAA AGCGG GUGA AAAGCCCGCU CGCCGGAAGA CCAAGGGUUC CUGUCCAACG UUAAUCGGGG CAGGGUGAGU CGACCCCUAA GGCGAG GCC GAAAGGCGUA GUCGAUGGGA AACAGGUUAA UAUUCCUGUA CUUGGUGUUA CUGCGAAGGG GGGACGGAGA AGGCUAU GU UGGCCGGGCG ACGGUUGUCC CGGUUUAAGC GUGUAGGCUG GUUUUCCAGG CAAAUCCGGA AAAUCAAGGC UGAGGCGU G AUGACGAGGC ACUACGGUGC UGAAGCAACA AAUGCCCUGC UUCCAGGAAA AGCCUCUAAG CAUCAGGUAA CAUCAAAUC GUACCCCAAA CCGACACAGG UGGUCAGGUA GAGAAUACCA AGGCGCUUGA GAGAACUCGG GUGAAGGAAC UAGGCAAAAU GGUGCCGUA ACUUCGGGAG AAGGCACGCU GAUAUGUAGG UGAGGUCCCU CGCGGAUGGA GCUGAAAUCA GUCGAAGAUA C CAGCUGGC UGCAACUGUU UAUUAAAAAC ACAGCACUGU GCAAACACGA AAGUGGACGU AUACGGUGUG ACGCCUGCCC GG UGCCGGA AGGUUAAUUG AUGGGGUUAG CGCAAGCGAA GCUCUUGAUC GAAGCCCCGG UAAACGGCGG CCGUAACUAU AAC GGUCCU AAGGUAGCGA AAUUCCUUGU CGGGUAAGUU CCGACCUGCA CGAAUGGCGU AAUGAUGGCC AGGCUGUCUC CACC CGAGA CUCAGUGAAA UUGAACUCGC UGUGAAGAUG CAGUGUACCC GCGGCAAGAC GGAAAGACCC CGUGAACCUU UACUA UAGC UUGACACUGA ACAUUGAGCC UUGAUGUGUA GGAUAGGUGG GAGGCUUUGA AGUGUGGACG CCAGUCUGCA UGGAGC CGA CCUUGAAAUA CCACCCUUUA AUGUUUGAUG UUCUAACGUU GACCCGUAAU CCGGGUUGCG GACAGUGUCU GGUGGGU AG UUUGACUGGG GCGGUCUCCU CCUAAAGAGU AACGGAGGAG CACGAAGGUU GGCUAAUCCU GGUCGGACAU CAGGAGGU U AGUGCAAUGG CAUAAGCCAG CUUGACUGCG AGCGUGACGG CGCGAGCAGG UGCGAAAGCA GGUCAUAGUG AUCCGGUGG UUCUGAAUGG AAGGGCCAUC GCUCAACGGA UAAAAGGUAC UCCGGGGAUA ACAGGCUGAU ACCGCCCAAG AGUUCAUAUC GACGGCGGU GUUUGGCACC UCGAUGUCGG CUCAUCACAU CCUGGGGCUG AAGUAGGUCC CAAGGGUAUG GCUGUUCGCC A UUUAAAGU GGUACGCGAG CUGGGUUUAG AACGUCGUGA GACAGUUCGG UCCCUAUCUG CCGUGGGCGC UGGAGAACUG AG GGGGGCU GCUCCUAGUA CGAGAGGACC GGAGUGGACG CAUCACUGGU GUUCGGGUUG UCAUGCCAAU GGCACUGCCC GGU AGCUAA AUGCGGAAGA GAUAAGUGCU GAAAGCAUCU AAGCACGAAA CUUGCCCCGA GAUGAGUUCU CCCUGACCCU UUAA GGGUC CUGAAGGAAC GUUGAAGACG ACGACGUUGA UAGGCCGGGU GUGUAAGCGC AGCGAUGCGU UGAGCUAACC GGUAC UAAU GAACCGUGAG GCUUAACCUU

GENBANK: GENBANK: CP060709.1

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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: 7.6
GridModel: Quantifoil R2/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number real images: 2794 / Average exposure time: 1.2 sec. / Average electron dose: 46.2 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.49 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 21282
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.21)
FSC plot (resolution estimation)

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