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Basic information

Entry
Database: PDB / ID: 1sdx
TitleCrystal structure of the zinc saturated C-terminal half of bovine lactoferrin at 2.0 A resolution reveals two additional zinc binding sites
Components(Lactotransferrin) x 2
KeywordsTRANSPORT PROTEIN / Lactoferrin / C-lobe
Function / homology
Function and homology information


Metal sequestration by antimicrobial proteins / Antimicrobial peptides / negative regulation of cysteine-type endopeptidase activity / 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 lipopolysaccharide-mediated signaling pathway / negative regulation of osteoclast development / specific granule / antifungal humoral response ...Metal sequestration by antimicrobial proteins / Antimicrobial peptides / negative regulation of cysteine-type endopeptidase activity / 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 lipopolysaccharide-mediated signaling pathway / negative regulation of osteoclast development / specific granule / antifungal humoral response / positive regulation of chondrocyte proliferation / regulation of tumor necrosis factor production / bone morphogenesis / Neutrophil degranulation / cysteine-type endopeptidase inhibitor activity / 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 / recycling endosome / antibacterial humoral response / iron ion transport / early endosome / iron ion binding / serine-type endopeptidase activity / signaling receptor binding / 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-like domain / Transferrin / 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-like domain / Transferrin / 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 speciesBos taurus (cattle)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.06 Å
AuthorsJabeen, T. / Sharma, S. / Singhal, G. / Singh, N. / Singh, T.P.
CitationJournal: Acta Crystallogr.,Sect.D / Year: 2005
Title: Structure of the zinc-saturated C-terminal lobe of bovine lactoferrin at 2.0 A resolution.
Authors: Jabeen, T. / Sharma, S. / Singh, N. / Bhushan, A. / Singh, T.P.
History
DepositionFeb 15, 2004Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Mar 2, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Non-polymer description / Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software / Item: _software.classification / _software.name
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_validate_chiral / pdbx_validate_close_contact / struct_asym / struct_conn / struct_conn_type / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_entity_id / _chem_comp.name / _chem_comp.type / _pdbx_struct_assembly_gen.asym_id_list / _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_seq_id / _pdbx_struct_conn_angle.ptnr2_label_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_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _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_conn_type.id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 25, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 2.2Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Lactotransferrin
E: Lactotransferrin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)39,56410
Polymers37,1282
Non-polymers2,4368
Water4,107228
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3650 Å2
ΔGint-61 kcal/mol
Surface area16070 Å2
MethodPISA
Unit cell
Length a, b, c (Å)63.210, 50.570, 66.170
Angle α, β, γ (deg.)90.00, 107.64, 90.00
Int Tables number4
Space group name H-MP1211

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Components

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Protein / Protein/peptide , 2 types, 2 molecules AE

#1: Protein Lactotransferrin / Lactoferrin


Mass: 36622.312 Da / Num. of mol.: 1 / Fragment: C-lobe / Mutation: N224K, K267E / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / Secretion: Mammary secretion / References: UniProt: P24627
#2: Protein/peptide Lactotransferrin


Mass: 505.585 Da / Num. of mol.: 1 / Fragment: residues 681-685 / Source method: isolated from a natural source / Source: (natural) Bos taurus (cattle) / Secretion: Mammary secretion / References: UniProt: P24627

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Sugars , 3 types, 3 molecules

#3: Polysaccharide 2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAca1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5_2*NCC/3=O][a2122h-1a_1-5_2*NCC/3=O]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][a-D-GlcpNAc]{}}}LINUCSPDB-CARE
#4: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-4)]alpha-D-mannopyranose-(1-4)-beta-D- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-4)]alpha-D-mannopyranose-(1-4)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1072.964 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-4]DManpa1-4DManpb1-4DGlcpNAca1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/4,6,5/[a2122h-1b_1-5_2*NCC/3=O][a2122h-1a_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-2-3-4-4-4/a4-b1_b4-c1_c4-d1_d3-e1_d4-f1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][a-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(4+1)][a-D-Manp]{[(3+1)][b-D-Manp]{}[(4+1)][a-D-Manp]{}}}}}}LINUCSPDB-CARE
#5: Polysaccharide alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1a_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][a-D-GlcpNAc]{[(4+1)][a-D-Manp]{}}}}LINUCSPDB-CARE

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Non-polymers , 4 types, 233 molecules

#6: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn
#7: Chemical ChemComp-CO3 / CARBONATE ION


Mass: 60.009 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CO3
#8: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#9: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 228 / Source method: isolated from a natural source / Formula: H2O

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Details

Has protein modificationY

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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: 2.71 Å3/Da / Density % sol: 54.67 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 4
Details: 0.1M MES, 25% polyethylene glycol monomethylether 550, 0.01M zinc sulphate heptahydrate, pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal grow
*PLUS
Temperature: 298 K / pH: 6.5 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
150 mg/mlprotein1drop
20.1 MMES1reservoirpH6.5
325 %(v/v)PEG550 MME1reservoir
40.01 Mzinc sulfate heptahydrate1reservoir

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Data collection

DiffractionMean temperature: 283 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Jan 31, 2004 / Details: Mirror
RadiationMonochromator: Graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.06→20 Å / Num. all: 24896 / Num. obs: 24896 / % possible obs: 91 % / Rsym value: 0.079 / Net I/σ(I): 14.7
Reflection shellResolution: 2.06→2.1 Å / Mean I/σ(I) obs: 2.2 / Rsym value: 0.315 / % possible all: 75
Reflection
*PLUS
Highest resolution: 2 Å / % possible obs: 91 % / Num. measured all: 140559 / Rmerge(I) obs: 0.079
Reflection shell
*PLUS
% possible obs: 75 % / Rmerge(I) obs: 0.315

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Processing

Software
NameVersionClassification
CNS0.9refinement
MAR345data collection
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1NKX

1nkx


Resolution: 2.06→19.9 Å / Rfactor Rfree error: 0.006 / Data cutoff high absF: 66114.49 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.21 1087 4.9 %RANDOM
Rwork0.192 ---
obs0.192 24896 89.9 %-
all-24896 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 59.2931 Å2 / ksol: 0.357725 e/Å3
Displacement parametersBiso mean: 40.1 Å2
Baniso -1Baniso -2Baniso -3
1-7.81 Å20 Å2-3.82 Å2
2---2.91 Å20 Å2
3----4.9 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.26 Å0.22 Å
Luzzati d res low-5 Å
Luzzati sigma a0.27 Å0.22 Å
Refinement stepCycle: LAST / Resolution: 2.06→19.9 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2594 0 151 228 2973
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.009
X-RAY DIFFRACTIONc_angle_deg2.1
X-RAY DIFFRACTIONc_dihedral_angle_d23.9
X-RAY DIFFRACTIONc_improper_angle_d1.22
X-RAY DIFFRACTIONc_mcbond_it2.171.5
X-RAY DIFFRACTIONc_mcangle_it3.282
X-RAY DIFFRACTIONc_scbond_it3.072
X-RAY DIFFRACTIONc_scangle_it4.362.5
LS refinement shellResolution: 2.06→2.1 Å / Rfactor Rfree error: 0.022 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.26 134 4.7 %
Rwork0.242 2741 -
obs--91 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2ION.PARAMION.TOP
X-RAY DIFFRACTION3WATER_REP.PARAMWATER.TOP
X-RAY DIFFRACTION4CO3.PARAMCO3.TOP
X-RAY DIFFRACTION5CARBOHYDRATE.PARAMCARBOHYDRATE.TOP
Refinement
*PLUS
Highest resolution: 2 Å / Lowest resolution: 20 Å / Rfactor Rfree: 0.21
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg23.9
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg1.22

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