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- PDB-4nrm: Crystal structure of human ALKBH5 in complex with citrate and acetate -

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Basic information

Entry
Database: PDB / ID: 4nrm
TitleCrystal structure of human ALKBH5 in complex with citrate and acetate
ComponentsRNA demethylase ALKBH5
KeywordsOXIDOREDUCTASE / alkbh5 / 6-methyl adenosine / PROTEIN/DNA INTERACTION / HUMAN DIOXYGENASE / METAL-BINDING / demethylation / RNA REPAIR
Function / homology
Function and homology information


gamma-delta T cell proliferation / Reversal of alkylation damage by DNA dioxygenases / mRNA N6-methyladenine demethylase / mRNA N6-methyladenosine dioxygenase activity / oxidative RNA demethylase activity / regulation of mRNA export from nucleus / regulation of mRNA processing / 2-oxoglutarate-dependent dioxygenase activity / membraneless organelle assembly / paraspeckles ...gamma-delta T cell proliferation / Reversal of alkylation damage by DNA dioxygenases / mRNA N6-methyladenine demethylase / mRNA N6-methyladenosine dioxygenase activity / oxidative RNA demethylase activity / regulation of mRNA export from nucleus / regulation of mRNA processing / 2-oxoglutarate-dependent dioxygenase activity / membraneless organelle assembly / paraspeckles / mRNA destabilization / molecular condensate scaffold activity / mRNA processing / regulation of translation / spermatogenesis / cell differentiation / response to hypoxia / nuclear speck / Golgi apparatus / RNA binding / nucleoplasm / metal ion binding / nucleus / cytosol
Similarity search - Function
RNA demethylase ALKBH5 / Alpha-ketoglutarate-dependent dioxygenase AlkB-like / Alpha-ketoglutarate-dependent dioxygenase AlkB-like / 2OG-Fe(II) oxygenase superfamily / Alpha-ketoglutarate-dependent dioxygenase AlkB-like superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
ACETATE ION / CITRATE ANION / RNA demethylase ALKBH5
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.17 Å
AuthorsFeng, C. / Chen, Z. / Liu, Y.
CitationJournal: J.Biol.Chem. / Year: 2014
Title: Crystal structures of the human RNA demethylase Alkbh5 reveal basis for substrate recognition
Authors: Feng, C. / Liu, Y. / Wang, G. / Deng, Z. / Zhang, Q. / Wu, W. / Tong, Y. / Cheng, C. / Chen, Z.
History
DepositionNov 27, 2013Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Mar 19, 2014Provider: repository / Type: Initial release
Revision 1.1Oct 21, 2015Group: Database references
Revision 1.2Nov 8, 2023Group: 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 / pdbx_initial_refinement_model / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.3Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: RNA demethylase ALKBH5
hetero molecules


Theoretical massNumber of molelcules
Total (without water)26,6333
Polymers26,3851
Non-polymers2482
Water1,18966
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)56.726, 56.726, 146.315
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Space group name H-MP43212

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Components

#1: Protein RNA demethylase ALKBH5 / Alkylated DNA repair protein alkB homolog 5 / Alpha-ketoglutarate-dependent dioxygenase alkB homolog 5


Mass: 26385.127 Da / Num. of mol.: 1 / Fragment: UNP RESIDUES 66-292
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ABH5, ALKBH5, OFOXD1 / Plasmid: pet-28a / Production host: Escherichia coli (E. coli)
References: UniProt: Q6P6C2, Oxidoreductases; Acting on paired donors, with incorporation or reduction of molecular oxygen; With 2-oxoglutarate as one donor, and incorporation of one atom of oxygen into each donor
#2: Chemical ChemComp-FLC / CITRATE ANION


Mass: 189.100 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H5O7
#3: Chemical ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C2H3O2
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 66 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 3

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Sample preparation

CrystalDensity Matthews: 2.23 Å3/Da / Density % sol: 44.86 %
Crystal growTemperature: 289 K / Method: vapor diffusion, hanging drop / pH: 5
Details: 20% PEG 4K, 100mM CH3CO2NH4, 100mM Na-citrate , pH 5, VAPOR DIFFUSION, HANGING DROP, temperature 289K

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Data collection

DiffractionMean temperature: 130 K
Diffraction sourceSource: SYNCHROTRON / Site: Photon Factory / Beamline: AR-NE3A / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 270 / Detector: CCD / Date: Nov 10, 2011
RadiationMonochromator: unknown / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.17→50 Å / Num. all: 13441 / Num. obs: 13344 / % possible obs: 99 % / Observed criterion σ(F): 3 / Observed criterion σ(I): 3
Reflection shellResolution: 2.17→2.21 Å / % possible all: 91

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Processing

Software
NameVersionClassification
HKL-2000data collection
BALBESphasing
REFMAC5.6.0117refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3BTZ

3btz


Resolution: 2.17→50 Å / Cor.coef. Fo:Fc: 0.952 / Cor.coef. Fo:Fc free: 0.943 / SU B: 13.826 / SU ML: 0.155 / Cross valid method: THROUGHOUT / σ(F): 3 / ESU R Free: 0.19 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
RfactorNum. reflection% reflectionSelection details
Rfree0.23215 692 5.2 %RANDOM
Rwork0.20335 ---
all0.20501 13441 --
obs0.20501 12575 99.21 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 37.782 Å2
Baniso -1Baniso -2Baniso -3
1-0.12 Å20 Å20 Å2
2--0.12 Å20 Å2
3----0.25 Å2
Refinement stepCycle: LAST / Resolution: 2.17→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1633 0 17 66 1716
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0050.0191689
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.3351.9722291
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.3885211
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.77523.01473
X-RAY DIFFRACTIONr_dihedral_angle_3_deg15.8815275
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.8841514
X-RAY DIFFRACTIONr_chiral_restr0.1750.2257
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.0211282
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr1.85531689
X-RAY DIFFRACTIONr_sphericity_free25.089533
X-RAY DIFFRACTIONr_sphericity_bonded8.50651686
LS refinement shellResolution: 2.169→2.225 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.375 30 -
Rwork0.274 756 -
obs--91.61 %

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