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- EMDB-37497: Cryo-EM structure of DSR2-TTP -

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Basic information

Entry
Database: EMDB / ID: EMD-37497
TitleCryo-EM structure of DSR2-TTP
Map data
Sample
  • Complex: a protein
    • Protein or peptide: SIR2-like domain-containing protein
    • Protein or peptide: tail tube protein(TTP)
Keywordscryo-EM structure of a protein / ANTIVIRAL PROTEIN
Biological speciesBacillus subtilis (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.48 Å
AuthorsZhang H / Li Z / Li XZ
Funding support1 items
OrganizationGrant numberCountry
Other government
CitationJournal: To Be Published
Title: Cryo-EM structure of DSR2-TTP
Authors: Zhang H / Li Z / Li XZ
History
DepositionSep 19, 2023-
Header (metadata) releaseMay 1, 2024-
Map releaseMay 1, 2024-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_37497.png

Downloads & links

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Map

FileDownload / File: emd_37497.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.)
1.7 Å/pix.
x 240 pix.
= 408. Å		1.7 Å/pix.
x 240 pix.
= 408. Å		1.7 Å/pix.
x 240 pix.
= 408. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.7 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.6
Minimum - Maximum-1.1867269 - 2.3832898
Average (Standard dev.)0.0010102267 (±0.0943502)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 408.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_37497_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_37497_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : a protein

EntireName: a protein
Components
  • Complex: a protein
    • Protein or peptide: SIR2-like domain-containing protein
    • Protein or peptide: tail tube protein(TTP)

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Supramolecule #1: a protein

SupramoleculeName: a protein / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Bacillus subtilis (bacteria)

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Macromolecule #1: SIR2-like domain-containing protein

MacromoleculeName: SIR2-like domain-containing protein / type: protein_or_peptide / ID: 1 / Details: WP_029317421.1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Bacillus subtilis (bacteria)
Molecular weightTheoretical: 118.525695 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MVKVDLESKR YGEKLKEVFL MLDNNVVECI KEITESSRNG KLVFFVGAGV STLSDYPQWW RLVDKYHEEL YGSPKKGNYS SDEYLRIPQ IFYNVKGEMA FDGILKDFFQ VDKPTNPIHD KILAMNPAHV ITTAYDNLID TACWKRGKYF SVISAEEDVA N ATSSRYLL ...String:
MVKVDLESKR YGEKLKEVFL MLDNNVVECI KEITESSRNG KLVFFVGAGV STLSDYPQWW RLVDKYHEEL YGSPKKGNYS SDEYLRIPQ IFYNVKGEMA FDGILKDFFQ VDKPTNPIHD KILAMNPAHV ITTAYDNLID TACWKRGKYF SVISAEEDVA N ATSSRYLL KVAGDFRKGF KGENVVLKED DYLNYDQNYP LISNLMKTII ATHTIVFIGY GLGDYNINML LNWVRKLQKD SF HKPFFIR TDPSPIENET LIYYENKGLR IIDAASLIDS NEYDYLERYS AVMDLLIESQ ENKFITKDDE VIDYIYGKIS PLF ALQYIR KIDLKHVFEY DYHFEVNGTV VRHKNKGFGY MERFFELKES CDERSKLSKK QYERFNALFN FFEKNGVICM AKDA GTLNT SIEINSLAYH GKYDVMKKFI EEQSVSIEDD YKKAFFLACL GRWEESYDLY SNIILNSIDE SNGCVYYLSQ INRYR IYQS ITQAVTQFNG LGLLTFGRHY KPFTDEFLAR IEREMTNFNI DDLFNGMPFE FQKKYKILEF LSDNQFLYDD TVKLFE LTN KVRSEMSEGS YSFGMSSDIV VLLRLYDNLR FLYENCLWSV SFHEFHQYIR NSMSLLIEKA EYERTRDIDE LGFSFFG KK SGFFMEYYDF VNISRHFKID DIKNLERSCS IDKIRFGEQE KIEEYLVGIA EEITKQFSAN GMNVVFYTQF ISEAKAAL Y FAKYVKLSEE GLGKIVKALL FYFPERDLDI GKRYVWLERL TKCNELPKSI ISIIDDFLVL QAEKHIDQNY SEVSSNGLY SRDYGALIKH FEKNFISKRL SEITLCLTQD KQKQIDFLFK LLPLLSTNAK SHLLSFKSVE NINDLMNGIR IGLIDEFTPE HEELIIEYL ETRKVNYIVE KEKGIQTFSS NDYMSTFGIW YFLEEINNSK MEEFIGMDDQ YDFFVDPENF DYKKFIPSWL K NYNDKLLG KIAGNKHMKH HVIEVLKERV KNSNDKRYLE ILMNYFI

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Macromolecule #2: tail tube protein(TTP)

MacromoleculeName: tail tube protein(TTP) / type: protein_or_peptide / ID: 2 / Details: WP_010328117.1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Bacillus subtilis (bacteria)
Molecular weightTheoretical: 29.304701 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MKTVIQDTAD VYFKRKSDGK LVFTAEAQTA SFSQAISEEK LRGGIGNKPL YILKSEKEIN LTVKNAFFDL EWLAMTQGET IQEETKVKV FDREHGLIVD DTNKVTLKGK PVSDVTFYNK KGLTYKIAVS TDGTYTIPTA FAAAKDKLTA VYQIEKVGRR L AIKASKFS ...String:
MKTVIQDTAD VYFKRKSDGK LVFTAEAQTA SFSQAISEEK LRGGIGNKPL YILKSEKEIN LTVKNAFFDL EWLAMTQGET IQEETKVKV FDREHGLIVD DTNKVTLKGK PVSDVTFYNK KGLTYKIAVS TDGTYTIPTA FAAAKDKLTA VYQIEKVGRR L AIKASKFS ERYEVEYRTI AYNPDTEEVY SDIYIQFPNV SPSGEFEMSL ENGNALAPEI KFEALADTDT DEMAVVIEAS RD ENTAAPV EDTTGSTQSS DLGGTTE

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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

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING ONLY
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.48 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 200000
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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