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- PDB-4lyx: five minutes iron loaded frog M ferritin -

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Basic information

Entry
Database: PDB / ID: 4lyx
Titlefive minutes iron loaded frog M ferritin
ComponentsFerritin, middle subunit
KeywordsOXIDOREDUCTASE / ferroxidase
Function / homology
Function and homology information


ferroxidase / ferroxidase activity / ferric iron binding / iron ion transport / ferrous iron binding / intracellular iron ion homeostasis / cytoplasm
Similarity search - Function
Ferritin iron-binding regions signature 1. / Ferritin iron-binding regions signature 2. / Ferritin, conserved site / Ferritin, core subunit, four-helix bundle / Ferritin / Ferritin / Ferritin-like diiron domain / Ferritin-like diiron domain profile. / Ferritin/DPS protein domain / Ferritin-like domain ...Ferritin iron-binding regions signature 1. / Ferritin iron-binding regions signature 2. / Ferritin, conserved site / Ferritin, core subunit, four-helix bundle / Ferritin / Ferritin / Ferritin-like diiron domain / Ferritin-like diiron domain profile. / Ferritin/DPS protein domain / Ferritin-like domain / Ferritin-like / Ferritin-like superfamily / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
: / Ferritin, middle subunit
Similarity search - Component
Biological speciesRana catesbeiana (American bullfrog)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.23 Å
AuthorsMangani, S. / Di Pisa, F. / Pozzi, C. / Turano, P. / Lalli, D.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2015
Title: Time-lapse anomalous X-ray diffraction shows how Fe(2+) substrate ions move through ferritin protein nanocages to oxidoreductase sites.
Authors: Pozzi, C. / Di Pisa, F. / Lalli, D. / Rosa, C. / Theil, E. / Turano, P. / Mangani, S.
History
DepositionJul 31, 2013Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 6, 2014Provider: repository / Type: Initial release
Revision 1.1Oct 1, 2014Group: Non-polymer description
Revision 1.2Apr 15, 2015Group: Database references
Revision 1.3Sep 20, 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 / pdbx_struct_conn_angle / 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_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_alt_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_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_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_alt_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 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_ptnr1_label_alt_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_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_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

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Assembly

Deposited unit
A: Ferritin, middle subunit
hetero molecules


Theoretical massNumber of molelcules
Total (without water)21,48427
Polymers20,6231
Non-polymers86026
Water6,630368
1
A: Ferritin, middle subunit
hetero molecules
x 24


Theoretical massNumber of molelcules
Total (without water)515,604648
Polymers494,95624
Non-polymers20,648624
Water43224
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_555-x,-y,z1
crystal symmetry operation3_555-x,y,-z1
crystal symmetry operation4_555x,-y,-z1
crystal symmetry operation5_555z,x,y1
crystal symmetry operation6_555z,-x,-y1
crystal symmetry operation7_555-z,-x,y1
crystal symmetry operation8_555-z,x,-y1
crystal symmetry operation9_555y,z,x1
crystal symmetry operation10_555-y,z,-x1
crystal symmetry operation11_555y,-z,-x1
crystal symmetry operation12_555-y,-z,x1
crystal symmetry operation13_555y,x,-z1
crystal symmetry operation14_555-y,-x,-z1
crystal symmetry operation15_555y,-x,z1
crystal symmetry operation16_555-y,x,z1
crystal symmetry operation17_555x,z,-y1
crystal symmetry operation18_555-x,z,y1
crystal symmetry operation19_555-x,-z,-y1
crystal symmetry operation20_555x,-z,y1
crystal symmetry operation21_555z,y,-x1
crystal symmetry operation22_555z,-y,x1
crystal symmetry operation23_555-z,y,x1
crystal symmetry operation24_555-z,-y,-x1
Buried area92660 Å2
ΔGint-389 kcal/mol
Surface area135790 Å2
MethodPISA
Unit cell
Length a, b, c (Å)184.180, 184.180, 184.180
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number209
Space group name H-MF432
Components on special symmetry positions
IDModelComponents
11A-203-

FE2

21A-208-

MG

31A-212-

MG

41A-213-

MG

51A-214-

MG

61A-219-

CL

71A-220-

CL

81A-382-

HOH

91A-424-

HOH

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Components

#1: Protein Ferritin, middle subunit / Ferritin M / Ferritin H' / Ferritin X


Mass: 20623.182 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rana catesbeiana (American bullfrog) / Production host: Escherichia coli (E. coli) / References: UniProt: P07798, ferroxidase
#2: Chemical ChemComp-FE2 / FE (II) ION


Mass: 55.845 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Fe
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 11 / Source method: obtained synthetically / Formula: Mg
#4: Chemical
ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: Cl
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 368 / 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: 3.16 Å3/Da / Density % sol: 61.02 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 9
Details: 1.6-2M magnesium chloride, 0.1M bicine , pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ELETTRA / Beamline: 5.2R / Wavelength: 1.2398 Å
DetectorType: DECTRIS PILATUS 2M / Detector: PIXEL / Date: Feb 18, 2012 / Details: mirror
RadiationMonochromator: Si111 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.2398 Å / Relative weight: 1
ReflectionResolution: 1.23→22.33 Å / Num. all: 497320 / Num. obs: 77177 / % possible obs: 99.7 % / Observed criterion σ(I): 2 / Redundancy: 6.4 % / Biso Wilson estimate: 11.483 Å2 / Rmerge(I) obs: 0.05 / Net I/σ(I): 15.2
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. unique allDiffraction-ID% possible all
1.23-1.33.60.4242.339191198.4
3.89-22.337.20.0294319552199.4

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Processing

Software
NameVersionClassification
MOLREPphasing
REFMAC5.7.0029refinement
MOSFLMdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: pdb entry 3KA3

3ka3


Resolution: 1.23→20.22 Å / Cor.coef. Fo:Fc: 0.973 / Cor.coef. Fo:Fc free: 0.967 / SU B: 0.866 / SU ML: 0.019 / Cross valid method: THROUGHOUT / σ(I): 2 / ESU R: 0.038 / ESU R Free: 0.036 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
RfactorNum. reflection% reflectionSelection details
Rfree0.17521 3869 5 %RANDOM
Rwork0.16063 ---
all0.16135 ---
obs0.16135 73219 99.44 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 14.374 Å2
Baniso -1Baniso -2Baniso -3
1-0 Å20 Å20 Å2
2--0 Å20 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 1.23→20.22 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1422 0 26 368 1816
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0080.0191661
X-RAY DIFFRACTIONr_angle_refined_deg1.2891.9472275
X-RAY DIFFRACTIONr_dihedral_angle_1_deg4.575221
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.13224.79296
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.74615324
X-RAY DIFFRACTIONr_dihedral_angle_4_deg21.0031510
X-RAY DIFFRACTIONr_chiral_restr0.0780.2239
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.021320
X-RAY DIFFRACTIONr_rigid_bond_restr4.08931230
X-RAY DIFFRACTIONr_sphericity_free28.195571
X-RAY DIFFRACTIONr_sphericity_bonded9.68751552
LS refinement shellResolution: 1.23→1.262 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.404 269 -
Rwork0.374 5164 -
obs--96.71 %

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