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- PDB-1kf5: Atomic Resolution Structure of RNase A at pH 7.1 -

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Basic information

Entry
Database: PDB / ID: 1kf5
TitleAtomic Resolution Structure of RNase A at pH 7.1
Componentspancreatic ribonuclease
KeywordsHYDROLASE / RNase A / titration / pH / crystal / soaking
Function / homology
Function and homology information


pancreatic ribonuclease / ribonuclease A activity / RNA nuclease activity / nucleic acid binding / defense response to Gram-positive bacterium / lyase activity / extracellular region
Similarity search - Function
P-30 Protein / Ribonuclease A-like domain / Pancreatic ribonuclease / Ribonuclease A, active site / Ribonuclease A-domain / Ribonuclease A-like domain superfamily / Pancreatic ribonuclease / Pancreatic ribonuclease family signature. / Pancreatic ribonuclease / Roll / Alpha Beta
Similarity search - Domain/homology
Ribonuclease pancreatic
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.15 Å
AuthorsBerisio, R. / Sica, F. / Lamzin, V.S. / Wilson, K.S. / Zagari, A. / Mazzarella, L.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 2002
Title: Atomic resolution structures of ribonuclease A at six pH values.
Authors: Berisio, R. / Sica, F. / Lamzin, V.S. / Wilson, K.S. / Zagari, A. / Mazzarella, L.
#1: Journal: J.Mol.Biol. / Year: 1999
Title: Protein titration in the crystal state
Authors: Berisio, R. / Lamzin, V.S. / Sica, F. / Wilson, K.S. / Zagari, A. / Mazzarella, L.
History
DepositionNov 19, 2001Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 19, 2001Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 16, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / diffrn_source / pdbx_initial_refinement_model / software
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _diffrn_source.pdbx_synchrotron_site / _software.name
Revision 1.4Nov 20, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: pancreatic ribonuclease


Theoretical massNumber of molelcules
Total (without water)13,7081
Polymers13,7081
Non-polymers00
Water4,125229
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)30.440, 38.380, 53.320
Angle α, β, γ (deg.)90.00, 105.74, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein pancreatic ribonuclease / RNASE A


Mass: 13708.326 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bos taurus (domestic cattle) / Organ: pancreas / References: UniProt: P61823, EC: 3.1.27.5
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 229 / 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: 2.19 Å3/Da / Density % sol: 43.74 %
Crystal growTemperature: 298 K / Method: liquid diffusion / pH: 7.1
Details: 2-propanol, pH 7.1, LIQUID DIFFUSION, temperature 298.0K
Crystal grow
*PLUS
Temperature: 20 ℃ / Method: batch method / Details: Tilton Jr., R.F., (1992) Biochemistry, 31, 2469.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
112 mg/mlprotein11
20.2 M11NaOH
350 %(v/v)methanol11

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: X11
DetectorType: MARRESEARCH / Detector: AREA DETECTOR
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthRelative weight: 1
ReflectionResolution: 1.15→30 Å / Num. all: 42236 / Num. obs: 42236 / % possible obs: 99.9 % / Observed criterion σ(I): 0 / Redundancy: 4.4 % / Biso Wilson estimate: 12.8 Å2 / Rmerge(I) obs: 0.043 / Net I/σ(I): 12.1
Reflection shellResolution: 1.15→1.17 Å / Rmerge(I) obs: 0.307 / Mean I/σ(I) obs: 3.7 / % possible all: 98
Reflection
*PLUS
Lowest resolution: 30 Å / Num. obs: 42235

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Processing

Software
NameClassification
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
SHELXLrefinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 7rsa

7rsa


Resolution: 1.15→30 Å / Num. parameters: 11414 / Num. restraintsaints: 14207 / σ(F): 0 / Stereochemistry target values: ENGH AND HUBER
Details: PLEASE NOTE: CHOH 215 IS ALTERNATIVE ONLY TO THE A CONFORMER OF GLN 101. CHOH 216 IS ALTERNATIVE ONLY TO THE A CONFORMER OF GLN 101.
RfactorNum. reflection% reflection
all0.106 42225 -
obs0.106 42225 99.9 %
Solvent computationSolvent model: MOEWS & KRETSINGER, J.MOL.BIOL.91(1973)201-22
Refine analyzeNum. disordered residues: 25 / Occupancy sum hydrogen: 892.25 / Occupancy sum non hydrogen: 1139.69
Refinement stepCycle: LAST / Resolution: 1.15→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1055 0 0 237 1292
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.015
X-RAY DIFFRACTIONs_angle_d0.033
X-RAY DIFFRACTIONs_zero_chiral_vol0.14
LS refinement shellResolution: 1.15→1.19 Å /
RfactorNum. reflection
Rwork0.148 -
obs-4431
Software
*PLUS
Name: SHELXL-96 / Classification: refinement
Refinement
*PLUS
σ(F): 0 / Rfactor Rwork: 0.106
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Type: s_chiral_restr / Dev ideal: 0.14

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