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- PDB-1ce2: STRUCTURE OF DIFERRIC BUFFALO LACTOFERRIN AT 2.5A RESOLUTION -

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Basic information

Entry
Database: PDB / ID: 1ce2
TitleSTRUCTURE OF DIFERRIC BUFFALO LACTOFERRIN AT 2.5A RESOLUTION
ComponentsPROTEIN (LACTOFERRIN)
KeywordsMETAL TRANSPORT / IRON BINDING PROTEIN / LACTOFERRIN / ANTIBACTERIAL / ROOM TEMPERATURE
Function / homology
Function and homology information


negative regulation of tumor necrosis factor (ligand) superfamily member 11 production / negative regulation of single-species biofilm formation in or on host organism / positive regulation of bone mineralization involved in bone maturation / negative regulation of osteoclast development / antifungal humoral response / specific granule / negative regulation of lipopolysaccharide-mediated signaling pathway / positive regulation of chondrocyte proliferation / regulation of tumor necrosis factor production / bone morphogenesis ...negative regulation of tumor necrosis factor (ligand) superfamily member 11 production / negative regulation of single-species biofilm formation in or on host organism / positive regulation of bone mineralization involved in bone maturation / negative regulation of osteoclast development / antifungal humoral response / specific granule / negative regulation of lipopolysaccharide-mediated signaling pathway / positive regulation of chondrocyte proliferation / regulation of tumor necrosis factor production / bone morphogenesis / positive regulation of osteoblast proliferation / Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases / positive regulation of osteoblast differentiation / regulation of cytokine production / ossification / innate immune response in mucosa / iron ion transport / recycling endosome / antibacterial humoral response / early endosome / iron ion binding / serine-type endopeptidase activity / negative regulation of apoptotic process / proteolysis / extracellular space / plasma membrane
Similarity search - Function
Lactotransferrin / Transferrin-like domain signature 2. / Transferrin family, iron binding site / Transferrin-like domain signature 1. / Transferrin-like domain signature 3. / Transferrin / Transferrin-like domain / Transferrin / Transferrin-like domain profile. / Transferrin ...Lactotransferrin / Transferrin-like domain signature 2. / Transferrin family, iron binding site / Transferrin-like domain signature 1. / Transferrin-like domain signature 3. / Transferrin / Transferrin-like domain / Transferrin / Transferrin-like domain profile. / Transferrin / Periplasmic binding protein-like II / D-Maltodextrin-Binding Protein; domain 2 / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
CARBONATE ION / : / Lactotransferrin
Similarity search - Component
Biological speciesBubalus bubalis (water buffalo)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.5 Å
AuthorsKarthikeyan, S. / Paramasivam, M. / Yadav, S. / Srinivasan, A. / Singh, T.P.
Citation
Journal: Acta Crystallogr.,Sect.D / Year: 1999
Title: Structure of buffalo lactoferrin at 2.5 A resolution using crystals grown at 303 K shows different orientations of the N and C lobes.
Authors: Karthikeyan, S. / Paramasivam, M. / Yadav, S. / Srinivasan, A. / Singh, T.P.
#1: Journal: J.Mol.Biol. / Year: 1997
Title: Three-dimensional structure of diferric bovine lactoferrin at 2.8 A resolution.
Authors: Moore, S.A. / Anderson, B.F. / Groom, C.R. / Haridas, M. / Baker, E.N.
#2: Journal: Arch.Biochem.Biophys. / Year: 1992
Title: Purification, crystallization, and X-ray diffraction studies of lactotransferrin from buffalo colostrum.
Authors: Raman, A. / Bhatia, K.L. / Singh, T.P. / Srinivasan, A. / Betzel, C. / Malik, R.C.
History
DepositionMar 13, 1999Deposition site: BNL / Processing site: RCSB
Revision 1.0Mar 19, 1999Provider: repository / Type: Initial release
Revision 1.1Oct 16, 2007Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 4, 2017Group: Refinement description / Category: software
Revision 1.4Nov 6, 2019Group: Data collection / Database references / Category: citation / struct_ref_seq_dif
Item: _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed ..._citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _struct_ref_seq_dif.details
Revision 1.5Aug 9, 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_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.6Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature / Item: _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: PROTEIN (LACTOFERRIN)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)76,0785
Polymers75,8461
Non-polymers2324
Water1,63991
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)77.462, 91.035, 131.507
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein PROTEIN (LACTOFERRIN)


Mass: 75846.242 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bubalus bubalis (water buffalo) / Cellular location: EXTRACELLULAR / Secretion: MILK / References: UniProt: O77698
#2: Chemical ChemComp-FE / FE (III) ION


Mass: 55.845 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe
#3: Chemical ChemComp-CO3 / CARBONATE ION


Mass: 60.009 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: CO3
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 91 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Sequence detailsSER41 AND ARG69 WERE INTERPRETED FROM ELECTRON DENSITY.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 2

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Sample preparation

CrystalDensity Matthews: 2.9 Å3/Da / Density % sol: 57.6 %
Crystal growpH: 8 / Details: pH 8.0
Crystal
*PLUS
Crystal grow
*PLUS
Temperature: 303 K / Method: microdialysis
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
150-70 mg/mlprotein11
20.025 MTris-HCl11
319 %(v/v)ethanol12

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Data collection

DiffractionMean temperature: 303 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Feb 1, 1997 / Details: PINHOLE
RadiationMonochromator: GRAPHITE CRYSTAL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.5→15 Å / Num. obs: 29307 / % possible obs: 90 % / Observed criterion σ(I): -3 / Redundancy: 1.8 % / Biso Wilson estimate: 62.8 Å2 / Rmerge(I) obs: 0.069 / Rsym value: 0.068 / Net I/σ(I): 15
Reflection shellResolution: 2.5→2.66 Å / Redundancy: 1.1 % / Rmerge(I) obs: 0.14 / Mean I/σ(I) obs: 4.08 / Rsym value: 0.14 / % possible all: 76.1
Reflection shell
*PLUS
% possible obs: 76.1 % / Rmerge(I) obs: 0.194

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Processing

Software
NameVersionClassification
DENZOdata reduction
AUTOMARdata reduction
AMoREphasing
X-PLOR3.851refinement
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: BUFFALO LACTOFERRIN (1BIY)

1biy


Resolution: 2.5→15 Å / Rfactor Rfree error: 0.007 / Data cutoff high absF: 10000000 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Details: BULK SOLVENT MODEL USED
RfactorNum. reflection% reflectionSelection details
Rfree0.265 1428 5 %RANDOM
Rwork0.187 ---
obs-29307 90 %-
Displacement parametersBiso mean: 55 Å2
Refine analyzeLuzzati coordinate error obs: 0.31 Å / Luzzati d res low obs: 5 Å / Luzzati sigma a obs: 0.41 Å
Refinement stepCycle: LAST / Resolution: 2.5→15 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5314 0 10 91 5415
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONx_bond_d0.006
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_deg1.3
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d26
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d0.62
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it3.521.5
X-RAY DIFFRACTIONx_mcangle_it5.492
X-RAY DIFFRACTIONx_scbond_it5.42
X-RAY DIFFRACTIONx_scangle_it82.5
LS refinement shellResolution: 2.5→2.66 Å / Rfactor Rfree error: 0.026 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.371 204 5 %
Rwork0.328 3848 -
obs--76.1 %
Xplor fileSerial no: 1 / Param file: PARHCSDX.PRO / Topol file: TOPHCSDX.PRO
Software
*PLUS
Name: X-PLOR / Version: 3.851 / Classification: refinement
Refinement
*PLUS
Highest resolution: 2.5 Å / Lowest resolution: 15 Å / σ(F): 0 / % reflection Rfree: 5 % / Rfactor obs: 0.187
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 55 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONx_angle_deg1.3
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg26
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg0.62
X-RAY DIFFRACTIONx_mcbond_it1.5
X-RAY DIFFRACTIONx_scbond_it2
X-RAY DIFFRACTIONx_mcangle_it2
X-RAY DIFFRACTIONx_scangle_it2.5
LS refinement shell
*PLUS
Rfactor Rfree: 0.371 / % reflection Rfree: 5 % / Rfactor Rwork: 0.328

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