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- PDB-1kwm: Human procarboxypeptidase B: Three-dimensional structure and impl... -

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Basic information

Entry
Database: PDB / ID: 1kwm
TitleHuman procarboxypeptidase B: Three-dimensional structure and implications for thrombin-activatable fibrinolysis inhibitor (TAFI)
ComponentsProcarboxypeptidase B
KeywordsHYDROLASE / Procarboxypeptidase B
Function / homology
Function and homology information


carboxypeptidase B / Metabolism of Angiotensinogen to Angiotensins / metallocarboxypeptidase activity / carboxypeptidase activity / cytoplasmic vesicle / proteolysis / extracellular space / zinc ion binding
Similarity search - Function
Metallocarboxypeptidase-like / Carboxypeptidase B, carboxypeptidase domain / Carboxypeptidase, activation peptide / Metallocarboxypeptidase-like, propeptide / Carboxypeptidase activation peptide / Zinc carboxypeptidases, zinc-binding region 2 signature. / Zinc carboxypeptidases, zinc-binding region 1 signature. / Peptidase family M14 domain profile. / Zn_pept / Peptidase M14, carboxypeptidase A ...Metallocarboxypeptidase-like / Carboxypeptidase B, carboxypeptidase domain / Carboxypeptidase, activation peptide / Metallocarboxypeptidase-like, propeptide / Carboxypeptidase activation peptide / Zinc carboxypeptidases, zinc-binding region 2 signature. / Zinc carboxypeptidases, zinc-binding region 1 signature. / Peptidase family M14 domain profile. / Zn_pept / Peptidase M14, carboxypeptidase A / Zinc carboxypeptidase / Zn peptidases / Aminopeptidase / Alpha-Beta Plaits / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
CITRIC ACID / Carboxypeptidase B
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsPereira, P.J.B. / Segura-Martin, S. / Ferrer-Orta, C. / Vendrell, J. / Aviles, F.-X. / Coll, M. / Gomis-Rueth, F.-X.
CitationJournal: J.Mol.Biol. / Year: 2002
Title: Human procarboxypeptidase B: three-dimensional structure and implications for thrombin-activatable fibrinolysis inhibitor (TAFI).
Authors: Barbosa Pereira, P.J. / Segura-Martin, S. / Oliva, B. / Ferrer-Orta, C. / Aviles, F.X. / Coll, M. / Gomis-Ruth, F.X. / Vendrell, J.
History
DepositionJan 30, 2002Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 5, 2002Provider: repository / Type: Initial release
Revision 1.1Apr 27, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Procarboxypeptidase B
B: Procarboxypeptidase B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)92,2345
Polymers91,9112
Non-polymers3233
Water14,664814
1
A: Procarboxypeptidase B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)46,2133
Polymers45,9551
Non-polymers2582
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Procarboxypeptidase B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)46,0212
Polymers45,9551
Non-polymers651
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)42.959, 83.558, 127.447
Angle α, β, γ (deg.)90.00, 99.12, 90.00
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Procarboxypeptidase B


Mass: 45955.488 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Plasmid: pPIC9 / Production host: Pichia pastoris (fungus) / References: UniProt: P15086, carboxypeptidase B
#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-CIT / CITRIC ACID


Mass: 192.124 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H8O7
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 814 / 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: 2.46 Å3/Da / Density % sol: 49.93 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6
Details: MES, sodium citrate, sodium chloride, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal grow
*PLUS
Temperature: 20 ℃ / pH: 7
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
111 mg/mlprotein1drop
25 mMMOPS1droppH7.0
3150 mM1dropNaCl
40.1 mMbenzamidine1drop
50.1 MMES1reservoirpH6.0
61 Msodium citrate1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, Hamburg / Beamline: BW7A / Wavelength: 0.97935 Å
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Dec 15, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.97935 Å / Relative weight: 1
ReflectionResolution: 1.6→27.4 Å / Num. all: 104805 / Num. obs: 104805 / % possible obs: 89.7 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Rsym value: 0.05 / Net I/σ(I): 8.4
Reflection shellResolution: 1.6→1.68 Å / Mean I/σ(I) obs: 2.7 / Rsym value: 0.241 / % possible all: 81.9
Reflection
*PLUS
Highest resolution: 1.6 Å / Redundancy: 2.9 % / Num. measured all: 303465 / Rmerge(I) obs: 0.05
Reflection shell
*PLUS
% possible obs: 81.9 % / Redundancy: 2.4 % / Rmerge(I) obs: 0.241

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Processing

Software
NameVersionClassification
DENZOdata reduction
SCALAdata scaling
AMoREphasing
SHELXL-97refinement
CCP4(SCALA)data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.6→27.4 Å / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.185 5241 RANDOM
Rwork0.135 --
all0.136 104785 -
obs0.136 104785 -
Refinement stepCycle: LAST / Resolution: 1.6→27.4 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6578 0 15 814 7407
Software
*PLUS
Name: SHELXL / Version: 97 / Classification: refinement
Refinement
*PLUS
Highest resolution: 1.6 Å / % reflection Rfree: 5 % / Rfactor Rwork: 0.136
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.006
X-RAY DIFFRACTIONs_angle_d
X-RAY DIFFRACTIONs_angle_deg1.67
X-RAY DIFFRACTIONs_dihedral_angle_d
X-RAY DIFFRACTIONs_improper_angle_d
X-RAY DIFFRACTIONs_mcbond_it
X-RAY DIFFRACTIONs_scbond_it
X-RAY DIFFRACTIONs_mcangle_it
X-RAY DIFFRACTIONs_scangle_it

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