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- PDB-2dp4: Crystal structure of the complex formed between proteinase K and ... -

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Basic information

Entry
Database: PDB / ID: 2dp4
TitleCrystal structure of the complex formed between proteinase K and a human lactoferrin fragment at 2.9 A resolution
Components
  • 8-mer peptide from Lactotransferrin
  • Proteinase K
KeywordsHYDROLASE / proteinase K / lactoferrin fragment
Function / homology
Function and homology information


negative regulation by host of viral process / membrane destabilizing activity / Mtb iron assimilation by chelation / phagocytic vesicle lumen / positive regulation of toll-like receptor 4 signaling pathway / Metal sequestration by antimicrobial proteins / negative regulation of viral process / 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 ...negative regulation by host of viral process / membrane destabilizing activity / Mtb iron assimilation by chelation / phagocytic vesicle lumen / positive regulation of toll-like receptor 4 signaling pathway / Metal sequestration by antimicrobial proteins / negative regulation of viral process / 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 / negative regulation of ATP-dependent activity / regulation of tumor necrosis factor production / peptidase K / bone morphogenesis / Antimicrobial peptides / cysteine-type endopeptidase inhibitor activity / negative regulation of viral genome replication / positive regulation of osteoblast proliferation / humoral immune response / Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases / positive regulation of osteoblast differentiation / regulation of cytokine production / protein serine/threonine kinase activator activity / ossification / innate immune response in mucosa / secretory granule / lipopolysaccharide binding / positive regulation of protein serine/threonine kinase activity / recycling endosome / specific granule lumen / antimicrobial humoral immune response mediated by antimicrobial peptide / tertiary granule lumen / positive regulation of NF-kappaB transcription factor activity / heparin binding / iron ion transport / antibacterial humoral response / positive regulation of canonical NF-kappaB signal transduction / defense response to Gram-negative bacterium / killing of cells of another organism / early endosome / iron ion binding / Amyloid fiber formation / serine-type endopeptidase activity / Neutrophil degranulation / negative regulation of apoptotic process / cell surface / protein-containing complex / proteolysis / DNA binding / extracellular space / extracellular exosome / extracellular region / nucleus / metal ion binding / plasma membrane / cytoplasm
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 / Proteinase K-like catalytic domain / Peptidase S8/S53 domain / : / Peptidase S8 propeptide/proteinase inhibitor I9 / Peptidase inhibitor I9 / Peptidase S8 propeptide/proteinase inhibitor I9 superfamily / Peptidase S8, subtilisin, His-active site / Serine proteases, subtilase family, histidine active site. / Serine proteases, subtilase family, aspartic acid active site. / Peptidase S8, subtilisin, Asp-active site / Serine proteases, subtilase family, serine active site. / Peptidase S8, subtilisin, Ser-active site / Serine proteases, subtilase domain profile. / Peptidase S8, subtilisin-related / Peptidase S8/S53 domain superfamily / Subtilase family / Peptidase S8/S53 domain / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Lactotransferrin / Proteinase K
Similarity search - Component
Biological speciesEngyodontium album (fungus)
Homo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.9 Å
AuthorsSingh, A.K. / Singh, N. / Sharma, S. / Bhushan, A. / Singh, T.P.
CitationJournal: To be Published
Title: Crystal structure of the complex formed between proteinase K and a human lactoferrin fragment at 2.9 A resolution
Authors: Singh, A.K. / Singh, N. / Sharma, S. / Bhushan, A. / Singh, T.P.
History
DepositionMay 5, 2006Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0May 16, 2006Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 25, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
E: Proteinase K
I: 8-mer peptide from Lactotransferrin


Theoretical massNumber of molelcules
Total (without water)29,8082
Polymers29,8082
Non-polymers00
Water2,018112
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)68.400, 68.400, 108.130
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number96
Space group name H-MP43212

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Components

#1: Protein Proteinase K / Tritirachium alkaline proteinase / Endopeptidase K


Mass: 28930.783 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Engyodontium album (fungus) / References: UniProt: P06873, peptidase K
#2: Protein/peptide 8-mer peptide from Lactotransferrin


Mass: 876.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Details: this peptiede was trapped durung its digestion by proteinase K.
Source: (natural) Homo sapiens (human) / References: UniProt: P02788
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 112 / 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: 2.06 Å3/Da / Density % sol: 40.33 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop / pH: 4.6
Details: 0.2M Ammonium actate, 0.1M sodium acetate, 30% PEG 4000, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 290 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU300 / Wavelength: 1.5418
DetectorType: MAR scanner 345 mm plate / Detector: IMAGE PLATE / Date: Mar 3, 2006
RadiationMonochromator: graphite / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.9→20 Å / Num. all: 5570 / Num. obs: 5570 / % possible obs: 93 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 29.1 Å2
Reflection shellResolution: 2.9→2.95 Å / % possible all: 95.2

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Processing

Software
NameVersionClassification
CNS0.9refinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1PEK

1pek


Resolution: 2.9→11.8 Å / Rfactor Rfree error: 0.011 / Data cutoff high absF: 111192.81 / 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
Rfree0.235 477 8.6 %RANDOM
Rwork0.193 ---
all0.2 5570 --
obs0.193 5570 92.8 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 38.4896 Å2 / ksol: 0.396651 e/Å3
Displacement parametersBiso mean: 14.2 Å2
Baniso -1Baniso -2Baniso -3
1--0.65 Å20 Å20 Å2
2---0.65 Å20 Å2
3---1.3 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.34 Å0.28 Å
Luzzati d res low-5 Å
Luzzati sigma a0.39 Å0.4 Å
Refinement stepCycle: LAST / Resolution: 2.9→11.8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2089 0 0 112 2201
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg2.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d25.6
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d1
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 2.9→3.08 Å / Rfactor Rfree error: 0.03 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.289 92 9.9 %
Rwork0.274 842 -
obs--94.9 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2ion.paramwater.top
X-RAY DIFFRACTION3water_rep.paramion.top

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