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- PDB-3bbx: The Hsp15 protein fitted into the low resolution Cryo-EM map of t... -

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Basic information

Entry
Database: PDB / ID: 3bbx
TitleThe Hsp15 protein fitted into the low resolution Cryo-EM map of the 50S.nc-tRNA.Hsp15 complex
Components
  • (50S ribosomal protein ...) x 28
  • 23S ribosomal RNA
  • 5S ribosomal RNA
KeywordsRIBOSOME / ribosomal complex / large subunit / 50S rescue stalled ribosome
Function / homology
Function and homology information


negative regulation of cytoplasmic translational initiation / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity ...negative regulation of cytoplasmic translational initiation / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / DnaA-L2 complex / translation repressor activity / negative regulation of DNA-templated DNA replication initiation / mRNA regulatory element binding translation repressor activity / assembly of large subunit precursor of preribosome / ribosome assembly / cytosolic ribosome assembly / response to reactive oxygen species / translational initiation / regulation of cell growth / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / large ribosomal subunit / ribosome binding / transferase activity / 5S rRNA binding / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / structural constituent of ribosome / ribosome / translation / response to antibiotic / negative regulation of DNA-templated transcription / mRNA binding / DNA binding / RNA binding / zinc ion binding / cytosol / cytoplasm
Similarity search - Function
Ribosomal protein L25, short-form / Ribosomal protein L31 type A / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L16 signature 1. / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 2. ...Ribosomal protein L25, short-form / Ribosomal protein L31 type A / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L16 signature 1. / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 2. / Ribosomal protein L16, conserved site / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / : / Ribosomal protein L9 signature. / Ribosomal protein L9, bacteria/chloroplast / Ribosomal protein L9, C-terminal / Ribosomal protein L9, C-terminal domain / Ribosomal protein L9, C-terminal domain superfamily / Ribosomal protein L17 signature. / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L36 signature. / Ribosomal protein L32p, bacterial type / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / : / Ribosomal protein L9, N-terminal domain superfamily / Ribosomal protein L9 / Ribosomal protein L9, N-terminal / Ribosomal protein L9, N-terminal domain / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L35, non-mitochondrial / Ribosomal protein L18, bacterial-type / : / Ribosomal protein L6, bacterial-type / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein L5, bacterial-type / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L27, conserved site / Ribosomal protein L27 signature. / Ribosomal protein L20 signature. / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L35 / Ribosomal protein L33 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / Ribosomal protein L33 / Ribosomal protein L33 superfamily / Ribosomal protein L16 / Ribosomal protein L30, bacterial-type / : / L28p-like / Ribosomal protein L27 / Ribosomal L27 protein / Ribosomal protein L20 / Ribosomal L32p protein family / Ribosomal protein L19 / Ribosomal protein L20 / Ribosomal protein L20, C-terminal / Ribosomal protein L19 / Ribosomal protein L19 superfamily / Ribosomal protein L21 / Ribosomal protein L32p / Large ribosomal subunit protein uL24, C-terminal domain / Ribosomal protein L17 / Ribosomal protein L17 superfamily / Ribosomal protein L17 / Ribosomal protein L21-like / L21-like superfamily / Ribosomal prokaryotic L21 protein / Ribosomal protein L34 / Ribosomal protein L34 / Ribosomal protein L24 / Ribosomal protein L3, bacterial/organelle-type / Ribosomal protein L15, bacterial-type / 50S ribosomal protein uL4 / Ribosomal protein L13, bacterial-type / Ribosomal protein L23/L25, conserved site / Ribosomal protein L23 signature. / Ribosomal protein L30, conserved site / Ribosomal protein L30 signature. / Ribosomal protein L5, conserved site / Ribosomal protein L5 signature. / Ribosomal protein L2 signature. / Ribosomal protein L29, conserved site / Ribosomal protein L29 signature.
Similarity search - Domain/homology
: / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / 50S ribosomal protein L6 / 50S ribosomal protein L13 / 50S ribosomal protein L14 / Large ribosomal subunit protein uL15 ...: / : / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / 50S ribosomal protein L6 / 50S ribosomal protein L13 / 50S ribosomal protein L14 / Large ribosomal subunit protein uL15 / 50S ribosomal protein L16 / 50S ribosomal protein L17 / 50S ribosomal protein L21 / 50S ribosomal protein L23 / 50S ribosomal protein L30 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL31 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL36A / Large ribosomal subunit protein bL9 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein bL25
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 10 Å
AuthorsJiang, L. / Abrahams, J.P.
CitationJournal: J Mol Biol / Year: 2009
Title: Recycling of aborted ribosomal 50S subunit-nascent chain-tRNA complexes by the heat shock protein Hsp15.
Authors: Linhua Jiang / Christiane Schaffitzel / Rouven Bingel-Erlenmeyer / Nenad Ban / Philipp Korber / Roman I Koning / Daniël C de Geus / Jasper R Plaisier / Jan Pieter Abrahams /
Abstract: When heat shock prematurely dissociates a translating bacterial ribosome, its 50S subunit is prevented from reinitiating protein synthesis by tRNA covalently linked to the unfinished protein chain ...When heat shock prematurely dissociates a translating bacterial ribosome, its 50S subunit is prevented from reinitiating protein synthesis by tRNA covalently linked to the unfinished protein chain that remains threaded through the exit tunnel. Hsp15, a highly upregulated bacterial heat shock protein, reactivates such dead-end complexes. Here, we show with cryo-electron microscopy reconstructions and functional assays that Hsp15 translocates the tRNA moiety from the A site to the P site of stalled 50S subunits. By stabilizing the tRNA in the P site, Hsp15 indirectly frees up the A site, allowing a release factor to land there and cleave off the tRNA. Such a release factor must be stop codon independent, suggesting a possible role for a poorly characterized class of putative release factors that are upregulated by cellular stress, lack a codon recognition domain and are conserved in eukaryotes.
History
DepositionNov 11, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 21, 2008Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Jul 18, 2018Group: Data collection / Category: em_image_scans / em_software / Item: _em_software.image_processing_id
Revision 1.3Feb 21, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: 5S ribosomal RNA
B: 23S ribosomal RNA
V: 50S ribosomal protein L25
C: 50S ribosomal protein L2
D: 50S ribosomal protein L3
E: 50S ribosomal protein L4
F: 50S ribosomal protein L5
G: 50S ribosomal protein L6
H: 50S ribosomal protein L9
J: 50S ribosomal protein L13
K: 50S ribosomal protein L14
L: 50S ribosomal protein L15
M: 50S ribosomal protein L16
N: 50S ribosomal protein L17
O: 50S ribosomal protein L18
P: 50S ribosomal protein L19
Q: 50S ribosomal protein L20
R: 50S ribosomal protein L21
S: 50S ribosomal protein L22
T: 50S ribosomal protein L23
U: 50S ribosomal protein L24
W: 50S ribosomal protein L27
X: 50S ribosomal protein L29
Y: 50S ribosomal protein L30
Z: 50S ribosomal protein L31
0: 50S ribosomal protein L32
1: 50S ribosomal protein L33
2: 50S ribosomal protein L34
3: 50S ribosomal protein L35
4: 50S ribosomal protein L36
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,342,884140
Polymers1,340,21030
Non-polymers2,674110
Water9,116506
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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RNA chain , 2 types, 2 molecules AB

#1: RNA chain 5S ribosomal RNA


Mass: 38790.090 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 33357928
#2: RNA chain 23S ribosomal RNA


Mass: 941612.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: GenBank: 33357927

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50S ribosomal protein ... , 28 types, 28 molecules VCDEFGHJKLMNOPQRSTUWXYZ01234

#3: Protein 50S ribosomal protein L25


Mass: 10713.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P68919
#4: Protein 50S ribosomal protein L2


Mass: 29923.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P60422
#5: Protein 50S ribosomal protein L3


Mass: 22277.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P60438
#6: Protein 50S ribosomal protein L4


Mass: 22121.566 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P60723
#7: Protein 50S ribosomal protein L5


Mass: 20202.416 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P62399
#8: Protein 50S ribosomal protein L6


Mass: 18801.598 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02390, UniProt: P0AG55*PLUS
#9: Protein 50S ribosomal protein L9


Mass: 15789.020 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7R1
#10: Protein 50S ribosomal protein L13


Mass: 16050.606 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02410, UniProt: P0AA10*PLUS
#11: Protein 50S ribosomal protein L14


Mass: 13565.067 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02411, UniProt: P0ADY3*PLUS
#12: Protein 50S ribosomal protein L15


Mass: 15008.471 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02413
#13: Protein 50S ribosomal protein L16


Mass: 15312.269 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02414, UniProt: P0ADY7*PLUS
#14: Protein 50S ribosomal protein L17


Mass: 14393.657 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02416, UniProt: P0AG44*PLUS
#15: Protein 50S ribosomal protein L18


Mass: 12794.668 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0C018
#16: Protein 50S ribosomal protein L19


Mass: 13028.082 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7K6
#17: Protein 50S ribosomal protein L20


Mass: 13396.828 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7L3
#18: Protein 50S ribosomal protein L21


Mass: 11586.374 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02422, UniProt: P0AG48*PLUS
#19: Protein 50S ribosomal protein L22


Mass: 12253.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P61175
#20: Protein 50S ribosomal protein L23


Mass: 11222.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02424, UniProt: P0ADZ0*PLUS
#21: Protein 50S ribosomal protein L24


Mass: 11208.054 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P60624
#22: Protein 50S ribosomal protein L27


Mass: 9015.344 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7L8
#23: Protein 50S ribosomal protein L29


Mass: 7286.464 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7M6
#24: Protein 50S ribosomal protein L30


Mass: 6423.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P02430, UniProt: P0AG51*PLUS
#25: Protein 50S ribosomal protein L31


Mass: 7887.117 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7M9
#26: Protein 50S ribosomal protein L32


Mass: 6332.249 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7N4
#27: Protein 50S ribosomal protein L33


Mass: 6257.436 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7N9
#28: Protein/peptide 50S ribosomal protein L34


Mass: 5397.463 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7P5
#29: Protein 50S ribosomal protein L35


Mass: 7181.835 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7Q1
#30: Protein/peptide 50S ribosomal protein L36


Mass: 4377.390 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Escherichia coli (E. coli) / Strain: MRE600 / References: UniProt: P0A7Q6

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Non-polymers , 2 types, 616 molecules

#31: Chemical...
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 110 / Source method: obtained synthetically / Formula: Mg
#32: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 506 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: 50S.nc-tRNA.Hsp15 complex / Type: COMPLEX
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: HOMEMADE PLUNGER / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Tecnai F20 / Image courtesy: FEI Company
MicroscopyModel: FEI TECNAI F20
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal magnification: 50000 X / Nominal defocus max: 3.5 nm / Nominal defocus min: 1.5 nm / Cs: 2 mm
Image recordingFilm or detector model: KODAK SO-163 FILM

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Processing

EM software
IDNameCategory
1localfitmodel fitting
2Situsmodel fitting
3EMAN3D reconstruction
CTF correctionDetails: CTF correction of each particle
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionMethod: cross-common lines, projection matching / Resolution: 10 Å / Nominal pixel size: 2.54 Å / Actual pixel size: 2.54 Å / Details: EMAN software / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: RECIPROCAL / Target criteria: best visual fit, best correlation value
Details: METHOD--colores REFINEMENT PROTOCOL--multi-rigid body refinement
Atomic model buildingPDB-ID: 2AW4

2aw4
PDB Unreleased entry


Accession code: 2AW4 / Source name: PDB / Type: experimental model
Refinement stepCycle: LAST
ProteinNucleic acidLigandSolventTotal
Num. atoms25156 63563 110 506 89335

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