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- PDB-1j1g: Crystal structure of the RNase MC1 mutant N71S in complex with 5'-GMP -

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Basic information

Entry
Database: PDB / ID: 1j1g
TitleCrystal structure of the RNase MC1 mutant N71S in complex with 5'-GMP
ComponentsRibonuclease MC1
KeywordsHYDROLASE / Nucleic acid / RNA
Function / homology
Function and homology information


ribonuclease T2 / ribonuclease T2 activity / RNA catabolic process / RNA binding / extracellular region
Similarity search - Function
Ribonuclease T2, eukaryotic / Ribonuclease T2, His active site 1 / Ribonuclease T2 family histidine active site 1. / Ribonuclease T2-like / Ribonuclease T2 family / Ribonuclease Rh; Chain A / Ribonuclease T2-like / Ribonuclease T2, His active site 2 / Ribonuclease T2 family histidine active site 2. / Ribonuclease T2-like superfamily ...Ribonuclease T2, eukaryotic / Ribonuclease T2, His active site 1 / Ribonuclease T2 family histidine active site 1. / Ribonuclease T2-like / Ribonuclease T2 family / Ribonuclease Rh; Chain A / Ribonuclease T2-like / Ribonuclease T2, His active site 2 / Ribonuclease T2 family histidine active site 2. / Ribonuclease T2-like superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
GUANOSINE-5'-MONOPHOSPHATE / Ribonuclease MC
Similarity search - Component
Biological speciesMomordica charantia (bitter melon)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsNumata, T. / Suzuki, A. / Kakuta, Y. / Kimura, K. / Yao, M. / Tanaka, I. / Yoshida, Y. / Ueda, T. / Kimura, M.
Citation
Journal: Biochemistry / Year: 2003
Title: Crystal Structures of the Ribonuclease MC1 Mutants N71T and N71S in Complex with 5'-GMP: Structural Basis for Alterations in Substrate Specificity
Authors: Numata, T. / Suzuki, A. / Kakuta, Y. / Kimura, K. / Yao, M. / Tanaka, I. / Yoshida, Y. / Ueda, T. / Kimura, M.
#1: Journal: BIOCHIM.BIOPHYS.ACTA / Year: 1999
Title: Crystal structure of a ribonuclease from the seeds of bitter gourd (Momordica charantia) at 1.75 A resolution
Authors: Nakagawa, A. / Tanaka, I. / Sakai, R. / Nakashima, T. / Funatsu, G. / Kimura, M.
#2: Journal: Biochem.Biophys.Res.Commun. / Year: 2000
Title: Crystal structures of the ribonuclease MC1 from bitter gourd seeds, complexed with 2'-UMP or 3'-UMP, reveal structural basis for uridine specificity
Authors: Suzuki, A. / Yao, M. / Tanaka, I. / Numata, T. / Kikukawa, S. / Yamasaki, N. / Kimura, M.
#3: Journal: BIOCHEMISTRY / Year: 2001
Title: Amino acid residues in ribonuclease MC1 from bitter gourd seeds which are essential for uridine specificity
Authors: Numata, T. / Suzuki, A. / Yao, M. / Tanaka, I. / Kimura, M.
History
DepositionDec 4, 2002Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0May 20, 2003Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 4, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 1.4Nov 10, 2021Group: Database references / Derived calculations / Category: 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
Revision 1.5Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.6Nov 13, 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: Ribonuclease MC1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,9113
Polymers21,1851
Non-polymers7262
Water3,351186
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)38.542, 66.209, 75.537
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Ribonuclease MC1 / RIBONUCLEASE MC1 / RNase MC


Mass: 21184.992 Da / Num. of mol.: 1 / Mutation: N71S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Momordica charantia (bitter melon) / Plasmid: pET-22b / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3)pLysS / References: UniProt: P23540, EC: 3.1.27.1
#2: Chemical ChemComp-5GP / GUANOSINE-5'-MONOPHOSPHATE


Mass: 363.221 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H14N5O8P
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 186 / 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: 1

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Sample preparation

CrystalDensity Matthews: 2 Å3/Da / Density % sol: 37.88 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: 0.2M sodium acetate, 0.1M sodium cacodylate, 24% PEG8000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SPring-8 / Beamline: BL44XU / Wavelength: 0.9 Å
DetectorType: OXFORD / Detector: CCD / Date: Feb 1, 2002 / Details: mirrors
RadiationMonochromator: Si 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9 Å / Relative weight: 1
ReflectionResolution: 1.6→32.81 Å / Num. all: 25113 / Num. obs: 25113 / % possible obs: 95.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.3 % / Biso Wilson estimate: 15.1 Å2 / Rmerge(I) obs: 0.157 / Net I/σ(I): 8.6
Reflection shellResolution: 1.6→1.66 Å / Redundancy: 2.3 % / Rmerge(I) obs: 0.233 / Mean I/σ(I) obs: 1.4 / Num. unique all: 1872 / % possible all: 72.9

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Processing

Software
NameClassification
OXFORDdata collection
d*TREKdata reduction
CNSrefinement
OXFORDdata reduction
d*TREKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1BK7

1bk7


Resolution: 1.6→32.81 Å / Rfactor Rfree error: 0.007 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.242 1201 4.9 %RANDOM
Rwork0.217 ---
all0.217 24732 --
obs0.217 24732 94.2 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 40.8682 Å2 / ksol: 0.368404 e/Å3
Displacement parametersBiso mean: 16.4 Å2
Baniso -1Baniso -2Baniso -3
1--3.78 Å20 Å20 Å2
2--5.81 Å20 Å2
3----2.03 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.23 Å0.2 Å
Luzzati d res low-5 Å
Luzzati sigma a0.15 Å0.15 Å
Refinement stepCycle: LAST / Resolution: 1.6→32.81 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1491 0 48 186 1725
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.3
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d22.5
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.8
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 1.6→1.7 Å / Rfactor Rfree error: 0.023 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.299 170 5.1 %
Rwork0.278 3144 -
obs-3144 77.4 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER.PARAMWATER.TOP
X-RAY DIFFRACTION35GMP_XPLOR.PARAM5GMP_XPLOR.TOP

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