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- EMDB-45516: Guillardia theta Fanzor (GtFz) State 1 -

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Basic information

Entry
Database: EMDB / ID: EMD-45516
TitleGuillardia theta Fanzor (GtFz) State 1
Map data
Sample
  • Complex: GtFz-omegaRNA complex
    • Protein or peptide: Maltose/maltodextrin-binding periplasmic protein,Guillardia theta Fanzor1
    • RNA: RNA (142-MER)
  • Ligand: ZINC ION
KeywordsFanzor / Eukaryotic / RNA-guided / nuclease / Gene editing / RNA BINDING PROTEIN-RNA-DNA complex
Function / homology
Function and homology information


detection of maltose stimulus / maltose transport complex / maltose binding / carbohydrate transport / maltose transport / maltodextrin transmembrane transport / carbohydrate transmembrane transporter activity / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex / cell chemotaxis ...detection of maltose stimulus / maltose transport complex / maltose binding / carbohydrate transport / maltose transport / maltodextrin transmembrane transport / carbohydrate transmembrane transporter activity / ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing / ATP-binding cassette (ABC) transporter complex / cell chemotaxis / outer membrane-bounded periplasmic space / periplasmic space / DNA damage response / membrane
Similarity search - Function
Transposase IS605, OrfB, C-terminal / Putative transposase DNA-binding domain / Maltose/Cyclodextrin ABC transporter, substrate-binding protein / Solute-binding family 1, conserved site / Bacterial extracellular solute-binding proteins, family 1 signature. / Bacterial extracellular solute-binding protein / Bacterial extracellular solute-binding protein
Similarity search - Domain/homology
Cas12f1-like TNB domain-containing protein / Maltose/maltodextrin-binding periplasmic protein
Similarity search - Component
Biological speciesGuillardia theta (eukaryote)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.7 Å
AuthorsXu P / Saito M / Zhang F
Funding support United States, 1 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
CitationJournal: Cell / Year: 2024
Title: Structural insights into the diversity and DNA cleavage mechanism of Fanzor.
Authors: Peiyu Xu / Makoto Saito / Guilhem Faure / Samantha Maguire / Samuel Chau-Duy-Tam Vo / Max E Wilkinson / Huihui Kuang / Bing Wang / William J Rice / Rhiannon K Macrae / Feng Zhang /
Abstract: Fanzor (Fz) is an ωRNA-guided endonuclease extensively found throughout the eukaryotic domain with unique gene editing potential. Here, we describe the structures of Fzs from three different ...Fanzor (Fz) is an ωRNA-guided endonuclease extensively found throughout the eukaryotic domain with unique gene editing potential. Here, we describe the structures of Fzs from three different organisms. We find that Fzs share a common ωRNA interaction interface, regardless of the length of the ωRNA, which varies considerably across species. The analysis also reveals Fz's mode of DNA recognition and unwinding capabilities as well as the presence of a non-canonical catalytic site. The structures demonstrate how protein conformations of Fz shift to allow the binding of double-stranded DNA to the active site within the R-loop. Mechanistically, examination of structures in different states shows that the conformation of the lid loop on the RuvC domain is controlled by the formation of the guide/DNA heteroduplex, regulating the activation of nuclease and DNA double-stranded displacement at the single cleavage site. Our findings clarify the mechanism of Fz, establishing a foundation for engineering efforts.
History
DepositionJun 27, 2024-
Header (metadata) releaseSep 11, 2024-
Map releaseSep 11, 2024-
UpdateOct 2, 2024-
Current statusOct 2, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_45516.png

Downloads & links

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Map

FileDownload / File: emd_45516.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.66 Å/pix.
x 360 pix.
= 238.68 Å		0.66 Å/pix.
x 360 pix.
= 238.68 Å		0.66 Å/pix.
x 360 pix.
= 238.68 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.663 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.15
Minimum - Maximum-0.24795462 - 0.5998582
Average (Standard dev.)0.0017223832 (±0.026076328)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 238.68 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : GtFz-omegaRNA complex

EntireName: GtFz-omegaRNA complex
Components
  • Complex: GtFz-omegaRNA complex
    • Protein or peptide: Maltose/maltodextrin-binding periplasmic protein,Guillardia theta Fanzor1
    • RNA: RNA (142-MER)
  • Ligand: ZINC ION

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Supramolecule #1: GtFz-omegaRNA complex

SupramoleculeName: GtFz-omegaRNA complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Guillardia theta (eukaryote)

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Macromolecule #1: Maltose/maltodextrin-binding periplasmic protein,Guillardia theta...

MacromoleculeName: Maltose/maltodextrin-binding periplasmic protein,Guillardia theta Fanzor1
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Guillardia theta (eukaryote)
Molecular weightTheoretical: 124.818938 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MKSSHHHHHH HHHHGSSMKI EEGKLVIWIN GDKGYNGLAE VGKKFEKDTG IKVTVEHPDK LEEKFPQVAA TGDGPDIIFW AHDRFGGYA QSGLLAEITP DKAFQDKLYP FTWDAVRYNG KLIAYPIAVE ALSLIYNKDL LPNPPKTWEE IPALDKELKA K GKSALMFN ...String:
MKSSHHHHHH HHHHGSSMKI EEGKLVIWIN GDKGYNGLAE VGKKFEKDTG IKVTVEHPDK LEEKFPQVAA TGDGPDIIFW AHDRFGGYA QSGLLAEITP DKAFQDKLYP FTWDAVRYNG KLIAYPIAVE ALSLIYNKDL LPNPPKTWEE IPALDKELKA K GKSALMFN LQEPYFTWPL IAADGGYAFK YENGKYDIKD VGVDNAGAKA GLTFLVDLIK NKHMNADTDY SIAEAAFNKG ET AMTINGP WAWSNIDTSK VNYGVTVLPT FKGQPSKPFV GVLSAGINAA SPNKELAKEF LENYLLTDEG LEAVNKDKPL GAV ALKSYE EELAKDPRIA ATMENAQKGE IMPNIPQMSA FWYAVRTAVI NAASGRQTVD EALKDAQTNS SSNNNNNNNN NNLG IEENL YFQSNASNIR IVKRKAKGFF KCEDLVTIKD AVKAAHRIMS DASILVRSYY LRWFQSSYPL DSDDKELELE HFHIS MACS IVQGITRPPV RGVGPEQSVK IDVFNDMLDE YKRLYERAPN DKENETDLSL SHVLAYSIDN LLTAYKNNIE AHFSKY VKR FIRCDMLAKG FNKSEANRVA AIYTNAYIYD SSLDLEPDFM ERLGLEATSY SSLFPSKINK GGFPRVYDLK ANPWVYL PK MVMINQALET DFSSVEHKER RLLNPLPFYS SFVPMHIRID TSGLSQLLMT KDRLDDFKRS YLAEFGVSLN IKNKGDML A SFEKIFGRKA TSNREAGLYA TEMWSFLTNL KTCRQWKELD GVVRKNDPKG TQWMFDNAVV TDGVSISFQV IDNSMFGRK AFSGRKKRVA CQEANDEEDS KQVTREELKT SKLLGCDPGK RDILAITDGI KTICYTKGQR DMDTHKTIRL RTSLKRRRGC GLEEYETQV MNRFQKRSCH PEMFRRYACS RKRMEHMLLE CYSHPVFREF KFLVYNKTKS SEHRFMHRVL ETFKRPQTNL S KARCASGV MRMNALKEVQ RHGDIIIGWG NWGKNPNALR CSAGPTPGIG IRRRFESLFK TTTVPEHYTS QECPSCKGRC LR KATGNPI MRHHLLRCTN DSCCSRWWNR NVAGAFNILT RLLDGQTLSG NETTGDGLGG DDL

UniProtKB: Maltose/maltodextrin-binding periplasmic protein, Cas12f1-like TNB domain-containing protein

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Macromolecule #2: RNA (142-MER)

MacromoleculeName: RNA (142-MER) / type: rna / ID: 2 / Number of copies: 1
Source (natural)Organism: Guillardia theta (eukaryote)
Molecular weightTheoretical: 49.948816 KDa
SequenceString:
CACUAUCCGG UAACGAAACU ACCGGAGACG GGUUAGGAGG UGACGACCUC UAAAACCUAG AACUUAGAGU GCAAAAACGC CAUUACGAU UGUGAUGCCU AUUCAAGGGU GUCCCAAGUG UAAAAAGAAA GCACUCUAAG AGCAUUAAAC UCUACU

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Macromolecule #3: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 3 / Number of copies: 1 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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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
VitrificationCryogen name: ETHANE-PROPANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 51.41 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 0.5 µm
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: 4.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 10507
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD

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