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- PDB-1qam: THE STRUCTURE OF THE RRNA METHYLTRANSFERASE ERMC': IMPLICATIONS F... -

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Basic information

Entry
Database: PDB / ID: 1qam
TitleTHE STRUCTURE OF THE RRNA METHYLTRANSFERASE ERMC': IMPLICATIONS FOR THE REACTION MECHANISM
ComponentsERMC' METHYLTRANSFERASE
KeywordsTRANSFERASE / RRNA METHYLTRANSFERASE ERMC' / COFACTOR ANALOGS
Function / homology
Function and homology information


23S rRNA (adenine2085-N6)-dimethyltransferase / 23S rRNA (adenine(2085)-N(6))-dimethyltransferase activity / rRNA (adenine-N6,N6-)-dimethyltransferase activity / response to antibiotic / RNA binding
Similarity search - Function
rRNA adenine dimethylase, C-terminal domain / rRNA adenine dimethylase-like, C-terminal / Ribosomal RNA adenine methylase transferase, conserved site / Ribosomal RNA adenine methylase transferase, N-terminal / Ribosomal RNA adenine dimethylases signature. / Ribosomal RNA adenine dimethylases / Ribosomal RNA adenine methyltransferase KsgA/Erm / Ribosomal RNA adenine dimethylase / rRNA adenine N(6)-methyltransferase family profile. / Helicase, Ruva Protein; domain 3 ...rRNA adenine dimethylase, C-terminal domain / rRNA adenine dimethylase-like, C-terminal / Ribosomal RNA adenine methylase transferase, conserved site / Ribosomal RNA adenine methylase transferase, N-terminal / Ribosomal RNA adenine dimethylases signature. / Ribosomal RNA adenine dimethylases / Ribosomal RNA adenine methyltransferase KsgA/Erm / Ribosomal RNA adenine dimethylase / rRNA adenine N(6)-methyltransferase family profile. / Helicase, Ruva Protein; domain 3 / Vaccinia Virus protein VP39 / S-adenosyl-L-methionine-dependent methyltransferase superfamily / Rossmann fold / Orthogonal Bundle / 3-Layer(aba) Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
ACETATE ION / rRNA adenine N-6-methyltransferase
Similarity search - Component
Biological speciesBacillus subtilis (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.2 Å
AuthorsSchluckebier, G. / Zhong, P. / Stewart, K.D. / Kavanaugh, T.J. / Abad-Zapatero, C.
Citation
Journal: J.Mol.Biol. / Year: 1999
Title: The 2.2 A structure of the rRNA methyltransferase ErmC' and its complexes with cofactor and cofactor analogs: implications for the reaction mechanism.
Authors: Schluckebier, G. / Zhong, P. / Stewart, K.D. / Kavanaugh, T.J. / Abad-Zapatero, C.
#1: Journal: Biochemistry / Year: 1998
Title: Crystal structure of ErmC', an RNA-methyltransferase which mediates antibiotic resistance in bacteria
Authors: Bussiere, D.E. / Muchmore, S.W. / Dealwis, C.G. / Schluckebier, G. / Nienaber, V.L. / Edalji, R.P. / Walter, K.A. / Ladror, U.S. / Holzman, T.F. / Abad-Zapatero, C.
History
DepositionMar 25, 1999Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 29, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: refine / Item: _refine.ls_percent_reflns_obs
Revision 1.4Feb 14, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ERMC' METHYLTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)29,0743
Polymers28,9561
Non-polymers1182
Water3,549197
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)81.380, 81.380, 122.220
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Cell settingtetragonal
Space group name H-MP43212

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Components

#1: Protein ERMC' METHYLTRANSFERASE / E.C.2.1.1.48


Mass: 28955.529 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus subtilis (bacteria) / Production host: Escherichia coli (E. coli) / References: UniProt: P13956, EC: 2.1.1.48
#2: Chemical ChemComp-ACT / ACETATE ION / Acetate


Mass: 59.044 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H3O2
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 197 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.49 Å3/Da / Density % sol: 64.79 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 7.8
Details: PEG 8000, AMMONIUM ACETATE, PH 7.8 AT 298 K, VAPOR DIFFUSION, HANGING DROP
Crystal grow
*PLUS
pH: 7.5
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
15-8 mg/mlprotein1drop
225 mMTris-HCl1drop
3100 mM1dropNaCl
42 mMdithiothreitol1drop
510 %(v/v)glycerol1drop
6100 mMTes1reservoir
7500 mMammonium acetate1reservoir
815 %(w/v)PEG80001reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Oct 1, 1997
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.2→50 Å / Num. all: 20680 / Num. obs: 20680 / % possible obs: 96 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.5 % / Biso Wilson estimate: 42 Å2 / Rmerge(I) obs: 0.054 / Net I/σ(I): 17
Reflection shellResolution: 2.2→2.28 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.308 / % possible all: 94.4
Reflection
*PLUS
% possible obs: 96 % / Num. measured all: 72558
Reflection shell
*PLUS
% possible obs: 94.4 % / Mean I/σ(I) obs: 4.4

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Processing

Software
NameClassification
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementResolution: 2.2→50 Å / σ(F): 0 / σ(I): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection
Rfree0.251 2098
Rwork0.221 -
all-20654
obs-20654
Refinement stepCycle: LAST / Resolution: 2.2→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1966 0 8 197 2171
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.007
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d1.32
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it
Software
*PLUS
Name: CNS / Classification: refinement
Refinement
*PLUS
Highest resolution: 2.2 Å / Lowest resolution: 50 Å / σ(F): 0 / Rfactor obs: 0.221
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDType
X-RAY DIFFRACTIONc_bond_d
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_deg
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scangle_it

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