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- PDB-4b1t: Structure of the factor Xa-like trypsin variant triple-Ala (TA) i... -

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Basic information

Entry
Database: PDB / ID: 4b1t
TitleStructure of the factor Xa-like trypsin variant triple-Ala (TA) in complex with eglin C
Components
  • CATIONIC TRYPSIN
  • EGLIN C
KeywordsHYDROLASE/HYDROLASE INHIBITOR / HYDROLASE-HYDROLASE INHIBITOR COMPLEX
Function / homology
Function and homology information


trypsin / serpin family protein binding / serine protease inhibitor complex / digestion / serine-type endopeptidase inhibitor activity / response to wounding / endopeptidase activity / serine-type endopeptidase activity / proteolysis / extracellular space / metal ion binding
Similarity search - Function
Trypsin Inhibitor V, subunit A / Proteinase inhibitor I13, potato inhibitor I / Proteinase inhibitor I13, potato inhibitor I superfamily / Potato inhibitor I family / Potato inhibitor I family signature. / Trypsin Inhibitor V; Chain A / : / Serine proteases, trypsin family, histidine active site / Serine proteases, trypsin family, serine active site / Serine proteases, trypsin family, histidine active site. ...Trypsin Inhibitor V, subunit A / Proteinase inhibitor I13, potato inhibitor I / Proteinase inhibitor I13, potato inhibitor I superfamily / Potato inhibitor I family / Potato inhibitor I family signature. / Trypsin Inhibitor V; Chain A / : / 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 / Trypsin-like serine proteases / Thrombin, subunit H / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / Beta Barrel / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
Serine protease 1 / Eglin C
Similarity search - Component
Biological speciesBOS TAURUS (domestic cattle)
HIRUDO MEDICINALIS (medicinal leech)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.78 Å
AuthorsMenzel, A. / Neumann, P. / Stubbs, M.T.
CitationJournal: Biol.Chem. / Year: 2014
Title: Thermodynamic signatures in macromolecular interactions involving conformational flexibility.
Authors: Menzel, A. / Neumann, P. / Schwieger, C. / Stubbs, M.T.
History
DepositionJul 12, 2012Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 1, 2012Provider: repository / Type: Initial release
Revision 1.1May 21, 2014Group: Database references
Revision 1.2Jul 16, 2014Group: Database references
Revision 1.3Jul 23, 2014Group: Database references
Revision 1.4May 8, 2019Group: Data collection / Database references ...Data collection / Database references / Experimental preparation / Other
Category: citation / exptl_crystal_grow ...citation / exptl_crystal_grow / pdbx_database_proc / pdbx_database_status / struct_biol
Item: _citation.page_last / _citation.pdbx_database_id_DOI ..._citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _exptl_crystal_grow.temp / _pdbx_database_status.recvd_author_approval
Revision 1.5Jul 17, 2019Group: Data collection / Category: diffrn_source / Item: _diffrn_source.pdbx_synchrotron_site
Revision 1.6Dec 20, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / 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_database_status.status_code_sf / _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.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 / _struct_conn.pdbx_dist_value / _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 1.7Nov 13, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature
Remark 700 SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AC" IN EACH CHAIN ON SHEET RECORDS BELOW ... SHEET DETERMINATION METHOD: DSSP THE SHEETS PRESENTED AS "AC" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL. THE SHEETS PRESENTED AS "CC" IN EACH CHAIN ON SHEET RECORDS BELOW IS ACTUALLY AN 6-STRANDED BARREL THIS IS REPRESENTED BY A 7-STRANDED SHEET IN WHICH THE FIRST AND LAST STRANDS ARE IDENTICAL.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: CATIONIC TRYPSIN
B: EGLIN C
C: CATIONIC TRYPSIN
D: EGLIN C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)63,99018
Polymers62,9254
Non-polymers1,06514
Water4,504250
1
A: CATIONIC TRYPSIN
B: EGLIN C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)32,05710
Polymers31,4622
Non-polymers5958
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area2960 Å2
ΔGint-21.2 kcal/mol
Surface area12440 Å2
MethodPISA
2
C: CATIONIC TRYPSIN
D: EGLIN C
hetero molecules


Theoretical massNumber of molelcules
Total (without water)31,9338
Polymers31,4622
Non-polymers4716
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area3080 Å2
ΔGint-20.5 kcal/mol
Surface area11580 Å2
MethodPISA
Unit cell
Length a, b, c (Å)78.330, 36.880, 103.970
Angle α, β, γ (deg.)90.00, 103.27, 90.00
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21C
12B
22D
/ NCS ensembles :
ID
1
2

NCS oper:
IDCodeMatrixVector
1given(1), (1), (1)
2given(-0.941059, -0.014001, 0.337952), (0.004906, -0.999603, -0.027753), (0.338207, -0.02446, 0.940754)-10.79825, 6.90211, 43.38873

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Components

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Protein , 2 types, 4 molecules ACBD

#1: Protein CATIONIC TRYPSIN / BETA-TRYPSIN / ALPHA-TRYPSIN CHAIN 1 / ALPHA-TRYPSIN CHAIN 2


Mass: 23346.336 Da / Num. of mol.: 2 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) BOS TAURUS (domestic cattle) / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: P00760, trypsin
#2: Protein EGLIN C


Mass: 8116.032 Da / Num. of mol.: 2 / Fragment: RESIDUES 1-70 / Mutation: YES
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HIRUDO MEDICINALIS (medicinal leech) / Production host: ESCHERICHIA COLI (E. coli) / References: UniProt: P01051

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Non-polymers , 4 types, 264 molecules

#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C2H6O2
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 250 / 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: 2.21 Å3/Da / Density % sol: 43.86 % / Description: NONE
Crystal growTemperature: 283 K
Details: 18% (W/V) PEG 10,000, 20% (V/V) GLYCEROL, 100 MM TRIS-HCL PH 8.5 AND 100 MM NACL AT 283 K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: X12 / Wavelength: 1
DetectorType: MARMOSAIC 225 mm CCD / Detector: CCD / Date: Mar 3, 2009 / Details: MIRRORS
RadiationMonochromator: SI-111 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.78→50 Å / Num. obs: 55837 / % possible obs: 98.8 % / Observed criterion σ(I): -3 / Redundancy: 4.1 % / Rmerge(I) obs: 0.07 / Net I/σ(I): 14.9
Reflection shellResolution: 1.78→1.89 Å / Rmerge(I) obs: 0.72 / Mean I/σ(I) obs: 2 / % possible all: 97.9

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Processing

Software
NameVersionClassification
REFMAC5.6.0117refinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRIES 4B2A

4b2a


Resolution: 1.78→30 Å / Cor.coef. Fo:Fc: 0.958 / Cor.coef. Fo:Fc free: 0.941 / SU B: 5.36 / SU ML: 0.088 / Cross valid method: THROUGHOUT / ESU R: 0.12 / ESU R Free: 0.116 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS.
RfactorNum. reflection% reflectionSelection details
Rfree0.21906 1136 2 %RANDOM
Rwork0.18382 ---
obs0.18453 54546 98.99 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 27.289 Å2
Baniso -1Baniso -2Baniso -3
1--0.28 Å20 Å20.39 Å2
2--0.23 Å20 Å2
3---0.23 Å2
Refinement stepCycle: LAST / Resolution: 1.78→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4382 0 66 250 4698
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0180.024581
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg1.8791.9526217
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg7.025590
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.36124.641181
X-RAY DIFFRACTIONr_dihedral_angle_3_deg13.60615715
X-RAY DIFFRACTIONr_dihedral_angle_4_deg20.6171514
X-RAY DIFFRACTIONr_chiral_restr0.2010.2688
X-RAY DIFFRACTIONr_gen_planes_refined0.010.0213445
X-RAY DIFFRACTIONr_gen_planes_other
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_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Refine-ID: X-RAY DIFFRACTION / Type: tight thermal / Weight position: 1.5

Ens-IDDom-IDAuth asym-IDNumberRms dev position (Å)
11A3392.12
12C3392.12
21B1002.89
22D1002.89
LS refinement shellResolution: 1.78→1.826 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.41 80 -
Rwork0.295 3808 -
obs--99.08 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
11.3589-0.22590.60571.5968-1.16062.9389-0.01910.0341-0.0579-0.068-0.1087-0.3728-0.00310.37780.12780.0102-0.00170.0140.05170.00720.1098-21.756916.7161-5.1074
21.4867-0.1189-0.57841.19630.59362.4774-0.0042-0.1251-0.07730.0567-0.03640.16460.07990.03480.04060.0562-0.01840.0090.02250.00990.0518-6.1664-8.6806-49.4777
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A16 - 245
2X-RAY DIFFRACTION1B2 - 70
3X-RAY DIFFRACTION2C16 - 245
4X-RAY DIFFRACTION2D4 - 70

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