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- PDB-2bd4: Porcine pancreatic elastase complexed with beta-casomorphin-7 and... -

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Basic information

Entry
Database: PDB / ID: 2bd4
TitlePorcine pancreatic elastase complexed with beta-casomorphin-7 and Lys-Ser at pH 5.0
Components
  • Chymotrypsin-like elastase family member 1
  • beta-casomorphin-7
KeywordsHYDROLASE / SERINE PROTEINASE
Function / homology
Function and homology information


pancreatic elastase / serine-type endopeptidase activity / proteolysis / extracellular space / metal ion binding
Similarity search - Function
: / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin ...: / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Peptidase S1A, chymotrypsin family / Serine proteases, trypsin family, histidine active site. / Serine proteases, trypsin family, serine active site. / Serine proteases, trypsin domain profile. / Trypsin-like serine protease / Serine proteases, trypsin domain / Trypsin / Trypsin-like serine proteases / Thrombin, subunit H / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / Beta Barrel / Mainly Beta
Similarity search - Domain/homology
Chymotrypsin-like elastase family member 1
Similarity search - Component
Biological speciesSus scrofa (pig)
Homo sapiens (human)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.7 Å
AuthorsLiu, B. / Schofield, C.J. / Wilmouth, R.C.
Citation
Journal: J.Biol.Chem. / Year: 2006
Title: Structural analyses on intermediates in serine protease catalysis
Authors: Liu, B. / Schofield, C.J. / Wilmouth, R.C.
#1: Journal: Nat.Struct.Biol. / Year: 1997
Title: Structure of a specific acyl-enzyme complex formed between beta-casomorphin-7 and porcine pancreatic elastase
Authors: Wilmouth, R.C. / Clifton, I.J. / Robinson, C.V. / Roach, P.L. / Aplin, R.T. / Westwood, N.J. / Hajdu, J. / Schofield, C.J.
#2: Journal: Nat.Struct.Biol. / Year: 2001
Title: X-ray snapshots of serine protease catalysis reveal a tetrahedral intermediate
Authors: Wilmouth, R.C. / Edman, K. / Neutze, R. / Wright, P.A. / Clifton, I.J. / Schneider, T.R. / Schofield, C.J. / Hajdu, J.
History
DepositionOct 20, 2005Deposition site: RCSB / Processing site: PDBJ
Revision 1.0May 30, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 18, 2017Group: Refinement description / Category: software
Revision 1.4Oct 25, 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 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_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.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_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 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _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_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_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 2.0Sep 25, 2024Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations / Polymer sequence / Source and taxonomy / Structure summary
Category: atom_site / diffrn_radiation_wavelength ...atom_site / diffrn_radiation_wavelength / diffrn_source / entity / entity_name_com / entity_poly / entity_poly_seq / entity_src_nat / pdbx_entity_nonpoly / pdbx_entity_src_syn / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / pdbx_validate_close_contact / struct_asym / struct_conn / struct_mon_prot_cis / struct_ref / struct_ref_seq / struct_ref_seq_dif / 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_comp_id / _atom_site.auth_seq_id / _atom_site.group_PDB / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.label_seq_id / _atom_site.pdbx_PDB_ins_code / _atom_site.type_symbol / _diffrn_radiation_wavelength.wavelength / _diffrn_source.pdbx_wavelength_list / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_src_nat.pdbx_beg_seq_num / _entity_src_nat.pdbx_end_seq_num / _pdbx_entity_src_syn.ncbi_taxonomy_id / _pdbx_entity_src_syn.organism_scientific / _pdbx_entity_src_syn.pdbx_beg_seq_num / _pdbx_entity_src_syn.pdbx_end_seq_num / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_seq_id / _struct_ref.db_code / _struct_ref.db_name / _struct_ref.entity_id / _struct_ref.pdbx_align_begin / _struct_ref.pdbx_db_accession / _struct_ref.pdbx_seq_one_letter_code / _struct_ref_seq.db_align_beg / _struct_ref_seq.db_align_end / _struct_ref_seq.pdbx_auth_seq_align_beg / _struct_ref_seq.pdbx_auth_seq_align_end / _struct_ref_seq.pdbx_db_accession / _struct_ref_seq.pdbx_strand_id / _struct_ref_seq.seq_align_end / _struct_ref_seq_dif.align_id / _struct_ref_seq_dif.details / _struct_site.details / _struct_site.pdbx_auth_seq_id / _struct_site_gen.label_asym_id
Revision 2.1Nov 6, 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

Downloads & links

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Assembly

Deposited unit
P: beta-casomorphin-7
A: Chymotrypsin-like elastase family member 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,0574
Polymers26,9212
Non-polymers1362
Water1,802100
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area890 Å2
ΔGint-28 kcal/mol
Surface area10160 Å2
MethodPISA
Unit cell
Length a, b, c (Å)50.227, 57.935, 74.774
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/peptide beta-casomorphin-7


Mass: 993.175 Da / Num. of mol.: 1 / Source method: obtained synthetically / Details: synthetic peptide / Source: (synth.) Homo sapiens (human)
#2: Protein Chymotrypsin-like elastase family member 1 / Elastase-1


Mass: 25928.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: P00772, pancreatic elastase
#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#4: Chemical ChemComp-SO4 / SULFATE ION


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


Mass: 18.015 Da / Num. of mol.: 100 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Nonpolymer detailsSER 1002 IS DISORDERED.
Sequence detailsTHIS CONFLICT IS BASED ON THE REFERENCE 3 IN SEQUENCE DATABASE, P00772 IN SWISS-PROT.

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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: 2.03 Å3/Da / Density % sol: 39.4 %
Crystal growTemperature: 294 K / Method: vapor diffusion, hanging drop / pH: 5
Details: 25MM SODIUM SULPHATE, 25MM SODIUM ACETATE (PH 5.0), 25 MG/ML PPE AND 17.5 MG/ML BCM7, AND THEN SOAKED WITH LYS-SER (50MG/ML) IN 250MM SODIUM ACETATE (PH 5.0) (5 MICROLITRES) FOR 60 MIN, ...Details: 25MM SODIUM SULPHATE, 25MM SODIUM ACETATE (PH 5.0), 25 MG/ML PPE AND 17.5 MG/ML BCM7, AND THEN SOAKED WITH LYS-SER (50MG/ML) IN 250MM SODIUM ACETATE (PH 5.0) (5 MICROLITRES) FOR 60 MIN, VAPOR DIFFUSION, HANGING DROP, temperature 294K

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Data collection

DiffractionMean temperature: 127 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU MICROMAX-007 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Jun 17, 2005 / Details: OSMIC mirrors
RadiationMonochromator: OSMIC MIRRORS / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.7→15.7 Å / Num. obs: 24646 / % possible obs: 99.9 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.5 % / Biso Wilson estimate: 15.4 Å2 / Rmerge(I) obs: 0.043 / Net I/σ(I): 20.6
Reflection shellResolution: 1.7→1.79 Å / Redundancy: 3.4 % / Rmerge(I) obs: 0.13 / Mean I/σ(I) obs: 8.6 / Num. unique all: 3558 / % possible all: 100

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Processing

Software
NameVersionClassificationNB
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACT1.7data extraction
MOSFLMdata reduction
CCP4(SCALA)data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3EST

3est


Resolution: 1.7→15.7 Å / Cor.coef. Fo:Fc: 0.948 / Cor.coef. Fo:Fc free: 0.931 / SU B: 1.983 / SU ML: 0.068 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.113 / ESU R Free: 0.109 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: The PPE:BCM7:LYS-SER PH 5 crystal (from which the pdb file 2BD4 was collected) was warmed to room temperature, immersed in 250 mm CHES PH 9, 25% (v/v) glycerol for 30s and refrozen.
RfactorNum. reflection% reflectionSelection details
Rfree0.22 1254 5.1 %RANDOM
Rwork0.186 ---
all0.188 24646 --
obs0.188 24599 99.83 %-
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: 19.622 Å2
Baniso -1Baniso -2Baniso -3
1-0.1 Å20 Å20 Å2
2--0.08 Å20 Å2
3----0.18 Å2
Refinement stepCycle: LAST / Resolution: 1.7→15.7 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1810 0 11 100 1921
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0190.0211862
X-RAY DIFFRACTIONr_angle_refined_deg1.7171.9172550
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.0615239
X-RAY DIFFRACTIONr_dihedral_angle_2_deg35.88724.23178
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.08715266
X-RAY DIFFRACTIONr_dihedral_angle_4_deg25.077159
X-RAY DIFFRACTIONr_chiral_restr0.1390.2292
X-RAY DIFFRACTIONr_gen_planes_refined0.0080.021420
X-RAY DIFFRACTIONr_nbd_refined0.2190.2895
X-RAY DIFFRACTIONr_nbtor_refined0.3120.21290
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1260.2110
X-RAY DIFFRACTIONr_metal_ion_refined0.130.25
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.250.223
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.20.27
X-RAY DIFFRACTIONr_mcbond_it1.2261.51215
X-RAY DIFFRACTIONr_mcangle_it1.8221915
X-RAY DIFFRACTIONr_scbond_it2.7353757
X-RAY DIFFRACTIONr_scangle_it3.6874.5635
LS refinement shellResolution: 1.7→1.744 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.318 75 -
Rwork0.182 1705 -
all-1780 -
obs--99.94 %

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