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- PDB-2spo: A NOVEL SITE-DIRECTED MUTANT OF MYOGLOBIN WITH AN UNUSUALLY HIGH ... -

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Basic information

Entry
Database: PDB / ID: 2spo
TitleA NOVEL SITE-DIRECTED MUTANT OF MYOGLOBIN WITH AN UNUSUALLY HIGH O2 AFFINITY AND LOW AUTOOXIDATION RATE
ComponentsMYOGLOBIN
KeywordsOXYGEN STORAGE
Function / homology
Function and homology information


Oxidoreductases; Acting on other nitrogenous compounds as donors / nitrite reductase activity / sarcoplasm / Oxidoreductases; Acting on a peroxide as acceptor; Peroxidases / removal of superoxide radicals / oxygen carrier activity / peroxidase activity / oxygen binding / heme binding / extracellular exosome / metal ion binding
Similarity search - Function
Myoglobin / Globins / Globin domain profile. / Globin-like / Globin / Globin / Globin-like superfamily / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
PROTOPORPHYRIN IX CONTAINING FE / Myoglobin
Similarity search - Component
Biological speciesPhyseter catodon (sperm whale)
MethodX-RAY DIFFRACTION / Resolution: 1.7 Å
AuthorsQuillin, M.L. / Arduini, R.M. / Phillips Jr., G.N.
Citation
Journal: J.Biol.Chem. / Year: 1992
Title: A novel site-directed mutant of myoglobin with an unusually high O2 affinity and low autooxidation rate.
Authors: Carver, T.E. / Brantley Jr., R.E. / Singleton, E.W. / Arduini, R.M. / Quillin, M.L. / Phillips Jr., G.N. / Olson, J.S.
#1: Journal: Proteins / Year: 1990
Title: Crystal Structure of Myoglobin from a Synthetic Gene
Authors: Phillips Jr., G.N. / Arduini, R.M. / Springer, B.A. / Sligar, S.G.
#2: Journal: Proc.Natl.Acad.Sci.USA / Year: 1987
Title: High-Level Expression of Sperm Whale Myoglobin in Escherichia Coli
Authors: Springer, B.A. / Sligar, S.G.
History
DepositionAug 25, 1993Processing site: BNL
Revision 1.0Jan 31, 1994Provider: repository / Type: Initial release
Revision 1.1Mar 25, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Feb 21, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / 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 / _pdbx_database_status.process_site / _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: MYOGLOBIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)18,0643
Polymers17,3511
Non-polymers7132
Water2,522140
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)91.200, 91.200, 45.870
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number168
Space group name H-MP6
Atom site foot note1: THIS OXYGEN IS A WATER MOLECULE COORDINATED TO FE IN THE HEM GROUP.

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Components

#1: Protein MYOGLOBIN


Mass: 17351.137 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Physeter catodon (sperm whale) / References: UniProt: P02185
#2: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#3: Chemical ChemComp-HEM / PROTOPORPHYRIN IX CONTAINING FE / HEME


Mass: 616.487 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C34H32FeN4O4
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 140 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 3.17 Å3/Da / Density % sol: 61.23 %
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 9 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
120 mg/mlprotein1drop
22.6-2.8 Mammonium sulfate1drop
320 mMTris-HCl1reservoir
41 mMEDTA1reservoir

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Data collection

Reflection
*PLUS
Highest resolution: 1.7 Å / Num. obs: 20549 / % possible obs: 84.9 % / Num. measured all: 68019 / Rmerge(I) obs: 0.155

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementResolution: 1.7→5 Å /
RfactorNum. reflection
Rwork0.157 -
obs0.157 19719
Refinement stepCycle: LAST / Resolution: 1.7→5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1224 0 49 139 1412
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.016
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg2.08
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d21.46
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d4.257
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: X-PLOR / Classification: refinement
Refinement
*PLUS
Highest resolution: 1.7 Å / Lowest resolution: 5 Å / Num. reflection obs: 19719 / Rfactor obs: 0.157
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_d2.08
X-RAY DIFFRACTIONx_dihedral_angle_d21.469

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