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- EMDB-60893: Cryo-EM structure of the large serine recombinase Bxb1 in complex... -

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Basic information

Entry
Database: EMDB / ID: EMD-60893
TitleCryo-EM structure of the large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
Map data
Sample
  • Complex: The large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
    • Complex: large serine recombinase
      • Protein or peptide: Integrase
    • Complex: attP
      • DNA: attP
      • DNA: attP
  • Ligand: ZINC ION
Keywordslarge serine recombinase / DNA BINDING PROTEIN
Function / homology
Function and homology information


DNA strand exchange activity / DNA binding
Similarity search - Function
Recombinase / DNA-binding recombinase domain / DNA-binding recombinase domain superfamily / DNA-binding recombinase domain profile. / Resolvase/invertase-type recombinase catalytic domain profile. / : / Resolvase, N-terminal catalytic domain / Resolvase-like, N-terminal catalytic domain superfamily / Resolvase, N terminal domain / Resolvase, N terminal domain
Similarity search - Domain/homology
Biological speciesMycobacterium phage Bxb1 (virus)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.21 Å
AuthorsSoma T / Hiraizumi M / Yamashita K / Nishimasu H
Funding support Japan, 2 items
OrganizationGrant numberCountry
Japan Science and TechnologyJPMJAX232F Japan
Japan Science and TechnologyJPMJCR23B6 Japan
CitationJournal: To Be Published
Title: Cryo-EM structure of the large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
Authors: Soma T
History
DepositionJul 20, 2024-
Header (metadata) releaseMar 4, 2026-
Map releaseMar 4, 2026-
UpdateMar 4, 2026-
Current statusMar 4, 2026Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_60893.png

Downloads & links

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Map

FileDownload / File: emd_60893.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.)
1.18 Å/pix.
x 240 pix.
= 282.199 Å		1.18 Å/pix.
x 240 pix.
= 282.199 Å		1.18 Å/pix.
x 240 pix.
= 282.199 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.17583 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-3.1247032 - 3.895145
Average (Standard dev.)-0.000072556264 (±0.037034553)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 282.1992 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_60893_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_60893_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_60893_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 : The large serine recombinase Bxb1 in complex with attP and attB (...

EntireName: The large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
Components
  • Complex: The large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
    • Complex: large serine recombinase
      • Protein or peptide: Integrase
    • Complex: attP
      • DNA: attP
      • DNA: attP
  • Ligand: ZINC ION

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Supramolecule #1: The large serine recombinase Bxb1 in complex with attP and attB (...

SupramoleculeName: The large serine recombinase Bxb1 in complex with attP and attB (GT/TT CDN) in the pre-strand exchange state (attP-L)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Mycobacterium phage Bxb1 (virus)

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Supramolecule #2: large serine recombinase

SupramoleculeName: large serine recombinase / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1

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Supramolecule #3: attP

SupramoleculeName: attP / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #2-#3

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Macromolecule #1: Integrase

MacromoleculeName: Integrase / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mycobacterium phage Bxb1 (virus)
Molecular weightTheoretical: 56.439949 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MRALVVIRLS RVTDATTSPE RQLESCQQLC AQRGWDVVGV AEDLDVSGAV DPFDRKRRPN LARWLAFEEQ PFDVIVAYRV DRLTRSIRH LQQLVHWAED HKKLVVSATE AHFDTTTPFA AVVIALMGTV AQMELEAIKE RNRSAAHFNI RAGKYRGSLP P WGYLPTRV ...String:
MRALVVIRLS RVTDATTSPE RQLESCQQLC AQRGWDVVGV AEDLDVSGAV DPFDRKRRPN LARWLAFEEQ PFDVIVAYRV DRLTRSIRH LQQLVHWAED HKKLVVSATE AHFDTTTPFA AVVIALMGTV AQMELEAIKE RNRSAAHFNI RAGKYRGSLP P WGYLPTRV DGEWRLVPDP VQRERILEVY HRVVDNHEPL HLVAHDLNRR GVLSPKDYFA QLQGREPQGR EWSATALKRS MI SEAMLGY ATLNGKTVRD DDGAPLVRAE PILTREQLEA LRAELVKTSR AKPAVSTPSL LLRVLFCAVC GEPAYKFAGG GRK HPRYRC RSMGFPKHCG NGTVAMAEWD AFCEEQVLDL LGDAERLEKV WVAGSDSAVE LAEVNAELVD LTSLIGSPAY RAGS PQREA LDARIAALAA RQEELEGLEA RPSGWEWRET GQRFGDWWRE QDTAAKNTWL RSMNVRLTFD VRGGLTRTID FGDLQ EYEQ HLRLGSVVER LHTGMS

UniProtKB: Integrase

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Macromolecule #2: attP

MacromoleculeName: attP / type: dna / ID: 2 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Mycobacterium phage Bxb1 (virus)
Molecular weightTheoretical: 16.028246 KDa
SequenceString: (DG)(DT)(DG)(DG)(DT)(DT)(DT)(DG)(DT)(DC) (DT)(DG)(DG)(DT)(DC)(DA)(DA)(DC)(DC)(DA) (DC)(DC)(DG)(DC)(DG)(DG)(DT)(DC)(DT) (DC)(DA)(DG)(DT)(DG)(DG)(DT)(DG)(DT)(DA) (DC) (DG)(DG)(DT)(DA)(DC)(DA) ...String:
(DG)(DT)(DG)(DG)(DT)(DT)(DT)(DG)(DT)(DC) (DT)(DG)(DG)(DT)(DC)(DA)(DA)(DC)(DC)(DA) (DC)(DC)(DG)(DC)(DG)(DG)(DT)(DC)(DT) (DC)(DA)(DG)(DT)(DG)(DG)(DT)(DG)(DT)(DA) (DC) (DG)(DG)(DT)(DA)(DC)(DA)(DA)(DA) (DC)(DC)(DC)(DA)

GENBANK: GENBANK: NC_002656.1

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Macromolecule #3: attP

MacromoleculeName: attP / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: Mycobacterium phage Bxb1 (virus)
Molecular weightTheoretical: 16.015266 KDa
SequenceString: (DT)(DG)(DG)(DG)(DT)(DT)(DT)(DG)(DT)(DA) (DC)(DC)(DG)(DT)(DA)(DC)(DA)(DC)(DC)(DA) (DC)(DT)(DG)(DA)(DG)(DA)(DC)(DC)(DG) (DC)(DG)(DG)(DT)(DG)(DG)(DT)(DT)(DG)(DA) (DC) (DC)(DA)(DG)(DA)(DC)(DA) ...String:
(DT)(DG)(DG)(DG)(DT)(DT)(DT)(DG)(DT)(DA) (DC)(DC)(DG)(DT)(DA)(DC)(DA)(DC)(DC)(DA) (DC)(DT)(DG)(DA)(DG)(DA)(DC)(DC)(DG) (DC)(DG)(DG)(DT)(DG)(DG)(DT)(DT)(DG)(DA) (DC) (DC)(DA)(DG)(DA)(DC)(DA)(DA)(DA) (DC)(DC)(DA)(DC)

GENBANK: GENBANK: NC_002656.1

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Macromolecule #4: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 4 / 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

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 51.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.21 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 266035
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
FSC plot (resolution estimation)

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