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- PDB-2ux7: Pseudoazurin with engineered amicyanin ligand loop, reduced form,... -

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Basic information

Entry
Database: PDB / ID: 2ux7
TitlePseudoazurin with engineered amicyanin ligand loop, reduced form, pH 7.5
ComponentsPSEUDOAZURIN
KeywordsELECTRON TRANSPORT / TYPE-1 COPPER / METAL-BINDING / REDOX POTENTIAL / COPPER / TRANSPORT / CUPREDOXIN / PERIPLASMIC / SPECTROSCOPIC PROPERTIES / LOOP SHORTENING / PROTEIN SCAFFOLD / ELECTRON TRANSFER
Function / homology
Function and homology information


electron transfer activity / periplasmic space / copper ion binding
Similarity search - Function
Pseudoazurin / Amicyanin/Pseudoazurin / Blue (type 1) copper protein, plastocyanin-type / Blue (type 1) copper domain / Copper binding proteins, plastocyanin/azurin family / Blue (type 1) copper protein, binding site / Type-1 copper (blue) proteins signature. / Cupredoxins - blue copper proteins / Cupredoxin / Immunoglobulin-like ...Pseudoazurin / Amicyanin/Pseudoazurin / Blue (type 1) copper protein, plastocyanin-type / Blue (type 1) copper domain / Copper binding proteins, plastocyanin/azurin family / Blue (type 1) copper protein, binding site / Type-1 copper (blue) proteins signature. / Cupredoxins - blue copper proteins / Cupredoxin / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
COPPER (II) ION / Pseudoazurin
Similarity search - Component
Biological speciesACHROMOBACTER CYCLOCLASTES (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.3 Å
AuthorsVelarde, M. / Huber, R. / Yanagisawa, S. / Dennison, C. / Messerschmidt, A.
CitationJournal: Biochemistry / Year: 2007
Title: Influence of loop shortening on the metal binding site of cupredoxin pseudoazurin.
Authors: Velarde, M. / Huber, R. / Yanagisawa, S. / Dennison, C. / Messerschmidt, A.
History
DepositionMar 27, 2007Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 21, 2007Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3May 8, 2019Group: Data collection / Experimental preparation / Other
Category: database_PDB_rev / database_PDB_rev_record ...database_PDB_rev / database_PDB_rev_record / exptl_crystal_grow / pdbx_database_proc / pdbx_database_status
Item: _exptl_crystal_grow.method / _pdbx_database_status.recvd_author_approval
Revision 1.4Sep 25, 2019Group: Data collection / Database references / Other / Category: citation / pdbx_database_status / reflns
Item: _citation.page_last / _citation.pdbx_database_id_DOI ..._citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _pdbx_database_status.status_code_sf / _reflns.pdbx_Rmerge_I_obs
Revision 1.5Dec 13, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _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_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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: PSEUDOAZURIN
hetero molecules


Theoretical massNumber of molelcules
Total (without water)13,0604
Polymers12,8691
Non-polymers1913
Water2,126118
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)105.756, 105.756, 57.280
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number155
Space group name H-MH32
Components on special symmetry positions
IDModelComponents
11A-2004-

HOH

21A-2038-

HOH

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Components

#1: Protein PSEUDOAZURIN / BLUE COPPER PROTEIN


Mass: 12868.755 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: THE C-TERMINAL LIGAND-BINDING LOOP BETWEEN H81 AND M86 HAS BEEN REPLACED BY THE RESPECTIVE SHORTER LOOP OF AMICYANIN
Source: (gene. exp.) ACHROMOBACTER CYCLOCLASTES (bacteria) / Organ: PERIPLASM / Plasmid: PTRCPAZAMI, PTRC99A / Production host: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21 / References: UniProt: P19567
#2: Chemical ChemComp-CU / COPPER (II) ION


Mass: 63.546 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cu
#3: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3
#4: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 118 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsTHE SEQUENCE OF THE MATURE PROTEIN PRESENT IN THE CRYSTALS STARTS ALA29 AND HAS 125 RESIDUES. ...THE SEQUENCE OF THE MATURE PROTEIN PRESENT IN THE CRYSTALS STARTS ALA29 AND HAS 125 RESIDUES. RESIDUES BETWEEN 109 AND 114 WERE DELETED AND REPLACED BY PRO PHE

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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: 2.12 Å3/Da / Density % sol: 41.61 % / Description: THE CRYSTALS WERE REDUCED WITH MERCAPTOETHANOL
Crystal growMethod: vapor diffusion, hanging drop / pH: 7.5
Details: HANGING DROP VAPOR DIFFUSION METHOD, 1 MICRO-L OF PROTEIN (20MG/ML IN 50 MM TRIS/HCL PLUS 30 MM NACL) WERE MIXED WITH 1 MICRO-L RESORVOIR SOLUTION (10 MM TRIS/HCL PLUS 2 M AMMONIUM SULFATE ...Details: HANGING DROP VAPOR DIFFUSION METHOD, 1 MICRO-L OF PROTEIN (20MG/ML IN 50 MM TRIS/HCL PLUS 30 MM NACL) WERE MIXED WITH 1 MICRO-L RESORVOIR SOLUTION (10 MM TRIS/HCL PLUS 2 M AMMONIUM SULFATE AND 2 M NACL). THE CRYSTALS WERE REDUCED BY ADDING 50 MM MERCAPTOETHANOL TO THE RESERVOIR SOLUTION AND BECAME COLORLESS AFTER 3 HOURS., pH 7.5

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: MPG/DESY, HAMBURG / Beamline: BW6 / Wavelength: 1.05
DetectorType: MARRESEARCH / Detector: CCD / Date: Oct 25, 2006 / Details: MIRRORS
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.05 Å / Relative weight: 1
ReflectionResolution: 1.3→50 Å / Num. obs: 29429 / % possible obs: 97.6 % / Observed criterion σ(I): 2 / Redundancy: 15.2 % / Rmerge(I) obs: 0.094 / Net I/σ(I): 15.7
Reflection shellResolution: 1.3→1.35 Å / Redundancy: 11.7 % / Rmerge(I) obs: 0.39 / Mean I/σ(I) obs: 3.6 / % possible all: 94

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Processing

Software
NameVersionClassification
REFMAC5.2.0019refinement
HKL-2000data reduction
SCALEPACKdata scaling
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1BQK

1bqk


Resolution: 1.3→30 Å / Cor.coef. Fo:Fc: 0.963 / Cor.coef. Fo:Fc free: 0.961 / SU B: 1.473 / SU ML: 0.032 / Cross valid method: THROUGHOUT / ESU R: 0.053 / ESU R Free: 0.052 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. SOME OF THE SIDE CHAINS WERE MODELED WITH TWO ALTERNATE CONFORMATIONS. THE COPPER AND SULFUR ATOMS WERE REFINED ANISOTROPICALLY.
RfactorNum. reflection% reflectionSelection details
Rfree0.201 1503 5.1 %RANDOM
Rwork0.192 ---
obs0.192 27910 97.6 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 19.47 Å2
Baniso -1Baniso -2Baniso -3
1--0.66 Å2-0.33 Å20 Å2
2---0.66 Å20 Å2
3---0.99 Å2
Refinement stepCycle: LAST / Resolution: 1.3→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms903 0 8 118 1029
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.022935
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.1841.9781264
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0965121
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.11726.28635
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.1915159
X-RAY DIFFRACTIONr_dihedral_angle_4_deg5.912151
X-RAY DIFFRACTIONr_chiral_restr0.0770.2142
X-RAY DIFFRACTIONr_gen_planes_refined0.0040.02697
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.1990.2457
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3090.2630
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1440.264
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2430.229
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.3840.223
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.7561.5623
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.1262980
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it1.7983343
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it2.7934.5284
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.3→1.33 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.218 113
Rwork0.236 1962
Refinement TLS params.Method: refined / Origin x: 18.91 Å / Origin y: 64.154 Å / Origin z: 25.945 Å
111213212223313233
T-0.0393 Å20.0145 Å20.0146 Å2--0.0108 Å20.02 Å2---0.0695 Å2
L1.3073 °2-0.4359 °2-0.1101 °2-1.8836 °2-0.2562 °2--0.5833 °2
S0.0702 Å °0.1347 Å °0.0226 Å °-0.0762 Å °-0.1393 Å °-0.1461 Å °-0.0209 Å °-0.018 Å °0.0692 Å °

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