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- PDB-7h68: THE 1.25 A CRYSTAL STRUCTURE OF HUMAN CHYMASE IN COMPLEX WITH (2R... -

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Basic information

Entry
Database: PDB / ID: 7h68
TitleTHE 1.25 A CRYSTAL STRUCTURE OF HUMAN CHYMASE IN COMPLEX WITH (2R)-2-benzyl-4-[(R)-(5-fluoro-3-methyl-1H-indol-2-yl)-phenylmethyl]-3-hydroxy-2H-furan-5-one
ComponentsChymase
KeywordsHYDROLASE / HUMAN CHYMASE / SERINE PROTEINASE
Function / homology
Function and homology information


chymase / basement membrane disassembly / cytokine precursor processing / peptide metabolic process / Activation of Matrix Metalloproteinases / midbrain development / extracellular matrix disassembly / Metabolism of Angiotensinogen to Angiotensins / angiotensin maturation / peptide binding ...chymase / basement membrane disassembly / cytokine precursor processing / peptide metabolic process / Activation of Matrix Metalloproteinases / midbrain development / extracellular matrix disassembly / Metabolism of Angiotensinogen to Angiotensins / angiotensin maturation / peptide binding / secretory granule / serine-type peptidase activity / protein catabolic process / cellular response to glucose stimulus / protein maturation / Signaling by SCF-KIT / positive regulation of angiogenesis / cytoplasmic ribonucleoprotein granule / extracellular matrix / regulation of inflammatory response / endopeptidase activity / serine-type endopeptidase activity / : / extracellular region / cytosol
Similarity search - Function
Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Serine proteases, trypsin family, histidine active site. / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.25 Å
AuthorsBanner, D.W. / Benz, J.M. / Joseph, C. / Schlatter, D. / Hilpert, H.
Funding support Switzerland, 1items
OrganizationGrant numberCountry
Not funded Switzerland
CitationJournal: Proteins / Year: 2026
Title: The CASP 16 Experimental Protein-Ligand Datasets.
Authors: Tosstorff, A. / Rudolph, M.G. / Benz, J. / Kuhn, B. / Kramer, C. / Sharpe, M. / Huang, C.Y. / Metz, A. / Hazemann, J. / Ritz, D. / Sweeney, A.M. / Gilson, M.K.
History
DepositionApr 19, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 5, 2025Provider: repository / Type: Initial release
Revision 1.1Mar 4, 2026Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Chymase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)25,8168
Polymers25,0331
Non-polymers7837
Water5,693316
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)73.600, 73.600, 48.484
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number78
Space group name H-MP43

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Chymase / Alpha-chymase / Mast cell protease I


Mass: 25032.910 Da / Num. of mol.: 1 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CMA1, CYH, CYM / Production host: Escherichia coli (E. coli) / References: UniProt: P23946, chymase

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Non-polymers , 5 types, 323 molecules

#2: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn
#3: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Cl
#4: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical ChemComp-A1AO4 / (5R)-5-benzyl-3-[(R)-(5-fluoro-3-methyl-1H-indol-2-yl)(phenyl)methyl]-4-hydroxyfuran-2(5H)-one


Mass: 427.467 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H22FNO3 / Feature type: SUBJECT OF INVESTIGATION
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 316 / 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: 2.63 Å3/Da / Density % sol: 53.21 %
Crystal growTemperature: 293 K / Method: microbatch / pH: 8.5
Details: Sample of human Chymase in 50 mM MES/NaOH pH 5.5, 150mM NaCl, 1mM TCEP, 10% Glycerol) at a concentration of 11mg/ml to 14mg/ml.Add [2-[(4-methylpyridin-2-yl)amino]-2-oxoethyl] 2- ...Details: Sample of human Chymase in 50 mM MES/NaOH pH 5.5, 150mM NaCl, 1mM TCEP, 10% Glycerol) at a concentration of 11mg/ml to 14mg/ml.Add [2-[(4-methylpyridin-2-yl)amino]-2-oxoethyl] 2-methylquinoline-4-carboxylate at 10x molar ratio. The compound helps to obtain crystals but is not visible in the structures. Add 0.5 mM ZnCl2. Add inhibitor, incubate for 16h on ice. Crystallize using microbatch setups with Al's oil (Hampton Research), with total drop size 1ul with 50% protein sample, using crystallization reagent of 0.1M Tris/HCl pH 8.5, 0.2M NaCl, 25% PEG 3350.

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SLS / Beamline: X06SA / Wavelength: 1 Å
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Mar 11, 2009
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.22→32.91 Å / Num. obs: 67565 / % possible obs: 86.6 % / CC1/2: 0.999 / Rmerge(I) obs: 0.031 / Rrim(I) all: 0.036 / Net I/σ(I): 19.65 / Num. measured all: 213822
Reflection shell

Diffraction-ID: 1

Resolution (Å)% possible obs (%)Rmerge(I) obsNum. measured obsNum. unique obsCC1/2Rrim(I) allNet I/σ(I) obs
1.22-1.2532.50.457243418720.6120.6111.38
1.25-1.2853.90.34447130170.7490.4571.83
1.28-1.3266.20.291628536070.8140.3852.4
1.32-1.3676.40.242832540410.8790.3113.3
1.36-1.489.70.1991094245780.9220.2494.36
1.4-1.4598.40.1691481548940.950.2046.09
1.45-1.5199.50.1381734947920.9750.1628.58
1.51-1.5799.20.1091674945790.9850.12711.03
1.57-1.6499.60.0841613843970.9920.09814.17
1.64-1.7299.80.0681551542240.9940.0817.26
1.72-1.8199.70.0541473340020.9960.06321.64
1.81-1.9299.80.0431408538270.9970.0526.43
1.92-2.0599.80.0341322635930.9980.03932.64
2.05-2.2299.80.0291224233260.9990.03436.83
2.22-2.4399.60.0261131030680.9990.03140.84
2.43-2.7299.60.0251023427910.9990.02943.58
2.72-3.1499.40.023903124620.9990.02747.66
3.14-3.8499.30.019758720850.9990.02351.11
3.84-5.4497.40.017562915870.9990.0251.81
5.44-32.9188.30.0227228230.9990.02449.47

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Processing

Software
NameVersionClassification
REFMAC5.7.0029refinement
XSCALEdata scaling
XDSdata reduction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 1.25→32.91 Å / Cor.coef. Fo:Fc: 0.98 / Cor.coef. Fo:Fc free: 0.973 / SU B: 1.079 / SU ML: 0.021 / Cross valid method: THROUGHOUT / ESU R: 0.038 / ESU R Free: 0.037 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.1481 3309 5.2 %RANDOM
Rwork0.12483 ---
obs0.12605 60896 89.46 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 15.312 Å2
Baniso -1Baniso -2Baniso -3
1--0.05 Å20 Å2-0 Å2
2---0.05 Å2-0 Å2
3---0.09 Å2
Refinement stepCycle: LAST / Resolution: 1.25→32.91 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1755 0 48 316 2119
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0090.0191910
X-RAY DIFFRACTIONr_bond_other_d0.0010.021830
X-RAY DIFFRACTIONr_angle_refined_deg1.4391.9862605
X-RAY DIFFRACTIONr_angle_other_deg0.7743.0034219
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.1355245
X-RAY DIFFRACTIONr_dihedral_angle_2_deg33.63322.78579
X-RAY DIFFRACTIONr_dihedral_angle_3_deg10.53215322
X-RAY DIFFRACTIONr_dihedral_angle_4_deg12.3041515
X-RAY DIFFRACTIONr_chiral_restr0.0930.2285
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.0212149
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02440
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr2.38133740
X-RAY DIFFRACTIONr_sphericity_free21.605576
X-RAY DIFFRACTIONr_sphericity_bonded5.353932
LS refinement shellResolution: 1.25→1.282 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.289 136 -
Rwork0.236 2412 -
obs--48.39 %

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