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- PDB-1cz0: INTRON ENCODED HOMING ENDONUCLEASE I-PPOI/DNA COMPLEX LACKING CAT... -

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Basic information

Entry
Database: PDB / ID: 1cz0
TitleINTRON ENCODED HOMING ENDONUCLEASE I-PPOI/DNA COMPLEX LACKING CATALYTIC METAL ION
Components
  • DNA (5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3')
  • INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI
KeywordsHYDROLASE/DNA / PROTEIN-DNA COMPLEX / DISTORTED DNA / HIS-CYS BOX ZINC BINDING SITE / BETA SHEET DNA BINDING / HYDROLASE-DNA COMPLEX
Function / homology
Function and homology information


intron homing / endonuclease activity / Hydrolases; Acting on ester bonds
Similarity search - Function
Homing Intron 3 (I-ppo) Encoded Endonuclease; Chain A / Homing Intron 3 (I-Ppo) Encoded Endonuclease; Chain A / Zinc-binding loop region of homing endonuclease / Homing endonuclease, His-Me finger superfamily / Zinc-binding loop region of homing endonuclease / His-Me finger superfamily / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
DNA / DNA (> 10) / Intron-encoded endonuclease I-PpoI
Similarity search - Component
Biological speciesPhysarum polycephalum (eukaryote)
MethodX-RAY DIFFRACTION / SYNCHROTRON / Resolution: 2.1 Å
AuthorsGalburt, E.A. / Chevalier, B. / Jurica, M.S. / Flick, K.E. / Stoddard, B.L.
CitationJournal: Nat.Struct.Biol. / Year: 1999
Title: A novel endonuclease mechanism directly visualized for I-PpoI.
Authors: Galburt, E.A. / Chevalier, B. / Tang, W. / Jurica, M.S. / Flick, K.E. / Monnat Jr., R.J. / Stoddard, B.L.
History
DepositionAug 31, 1999Deposition site: RCSB / Processing site: RCSB
Revision 1.0Nov 19, 1999Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 7, 2024Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / pdbx_validate_close_contact / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_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 / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_1 / _pdbx_validate_close_contact.auth_seq_id_2 / _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

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: DNA (5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3')
D: DNA (5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3')
A: INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI
B: INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI
hetero molecules


Theoretical massNumber of molelcules
Total (without water)48,54210
Polymers48,2344
Non-polymers3086
Water6,774376
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)113.866, 113.866, 89.040
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Cell settingtrigonal
Space group name H-MP3121

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Components

#1: DNA chain DNA (5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3')


Mass: 6437.184 Da / Num. of mol.: 2 / Source method: obtained synthetically / Details: I-PPOI DNA HOMING SEQUENCE
#2: Protein INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI / 3.1.-.- / I-PPO


Mass: 17680.047 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Physarum polycephalum (eukaryote) / Production host: Escherichia coli (E. coli)
References: UniProt: Q94702, Hydrolases; Acting on ester bonds
#3: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#4: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 376 / 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: 3.42 Å3/Da / Density % sol: 64.04 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 5.6
Details: PEG 3350, SODIUM CITRATE, SODIUM CHLORIDE, SPERMINE, EDTA, pH 5.6, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Components of the solutions
IDNameCrystal-IDSol-ID
1SODIUM CITRATE11
2NACL11
3SPERMINE11
4EDTA11
5PEG 335011
6PEG 335012
Crystal grow
*PLUS
Temperature: 4 unknown / Method: vapor diffusion, hanging drop / Details: Flick, K.E., (1997) Protein Sci., 6, 2677. / PH range low: 5.8 / PH range high: 5.4
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
13 mg/mlprotein1drop
220 mM1reservoirNaCl
32 mMEDTA1reservoir
40.1 Mcitrate1reservoir
521-27 %PEG40001reservoir
61

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ALS / Beamline: 5.0.2 / Wavelength: 0.98
DetectorType: OTHER / Detector: CCD / Date: Apr 20, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.98 Å / Relative weight: 1
ReflectionResolution: 2.1→50 Å / Num. all: 38078 / Num. obs: 38078 / % possible obs: 96.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 5.4 % / Rmerge(I) obs: 0.067 / Net I/σ(I): 10.1
Reflection shellResolution: 2.1→2.15 Å / Redundancy: 4.8 % / Rmerge(I) obs: 0.178 / % possible all: 97.8
Reflection
*PLUS
Highest resolution: 2.1 Å / Num. measured all: 206866
Reflection shell
*PLUS
% possible obs: 97.8 %

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLOR3.851refinement
X-PLORphasing
RefinementResolution: 2.1→50 Å / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: ENGH & HUBER
RfactorNum. reflection% reflectionSelection details
Rfree0.216 2285 6 %RANDOM
Rwork0.191 ---
all0.191 38078 --
obs0.191 38078 96.9 %-
Refinement stepCycle: LAST / Resolution: 2.1→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2490 854 6 376 3726
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
Highest resolution: 2.1 Å / Lowest resolution: 50 Å / σ(F): 0 / % reflection Rfree: 6 %
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.006
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_deg1.18
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.3
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg1.04

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