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- PDB-2nsp: Crystal structure of pectin methylesterase D178A mutant in comple... -

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Basic information

Entry
Database: PDB / ID: 2nsp
TitleCrystal structure of pectin methylesterase D178A mutant in complex with hexasaccharide I
ComponentsPectinesterase A
KeywordsHYDROLASE / Michaelis complex
Function / homology
Function and homology information


pectinesterase / pectinesterase activity / cell wall modification / pectin catabolic process / cell outer membrane / extracellular space
Similarity search - Function
: / Pectinesterase, Asp active site / Pectinesterase signature 2. / Pectinesterase, catalytic / Pectinesterase / Single-stranded right-handed beta-helix, Pectin lyase-like / Pectate Lyase C-like / Pectin lyase fold / Pectin lyase fold/virulence factor / 3 Solenoid / Mainly Beta
Similarity search - Domain/homology
Biological speciesErwinia chrysanthemi (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 1.7 Å
AuthorsFries, M. / Brocklehurst, K. / Shevchik, V.E. / Pickersgill, R.W.
CitationJournal: Embo J. / Year: 2007
Title: Molecular basis of the activity of the phytopathogen pectin methylesterase.
Authors: Fries, M. / Ihrig, J. / Brocklehurst, K. / Shevchik, V.E. / Pickersgill, R.W.
History
DepositionNov 6, 2006Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 18, 2007Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Source and taxonomy / Version format compliance
Revision 2.0May 13, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_chiral / struct_asym / struct_conn / 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_seq_id / _atom_site.label_asym_id / _chem_comp.type / _pdbx_nonpoly_scheme.asym_id / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_nonpoly_scheme.ndb_seq_num / _pdbx_nonpoly_scheme.pdb_seq_num / _pdbx_nonpoly_scheme.pdb_strand_id / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_site_gen.auth_asym_id / _struct_site_gen.auth_seq_id / _struct_site_gen.label_asym_id
Revision 3.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_chiral / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.auth_asym_id / _atom_site.auth_seq_id ..._atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_entity_id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.type / _database_PDB_caveat.text / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 3.1Oct 20, 2021Group: Database references / Derived calculations / Structure summary
Category: chem_comp / database_2 ...chem_comp / database_2 / struct_conn / struct_ref_seq_dif
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.pdbx_leaving_atom_flag / _struct_ref_seq_dif.details
Revision 3.2Aug 30, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model / struct_ncs_dom_lim
Item: _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.end_auth_comp_id
Revision 3.3Oct 30, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Pectinesterase A
B: Pectinesterase A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)76,1334
Polymers73,9002
Non-polymers2,2342
Water14,214789
1
A: Pectinesterase A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)38,0672
Polymers36,9501
Non-polymers1,1171
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Pectinesterase A
hetero molecules


Theoretical massNumber of molelcules
Total (without water)38,0672
Polymers36,9501
Non-polymers1,1171
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)51.110, 85.103, 97.281
Angle α, β, γ (deg.)90.00, 93.48, 90.00
Int Tables number4
Space group name H-MP1211
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11B
21A

NCS domain segments:

Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: ALA / Beg label comp-ID: ALA / End auth comp-ID: PRO / End label comp-ID: PRO / Refine code: 1 / Auth seq-ID: 25 - 366 / Label seq-ID: 1 - 342

Dom-IDAuth asym-IDLabel asym-ID
1BB
2AA

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Components

#1: Protein Pectinesterase A / Pectin methylesterase A / PE A


Mass: 36949.785 Da / Num. of mol.: 2 / Mutation: D178A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Erwinia chrysanthemi (bacteria) / Genus: Dickeya / Strain: 3937 / Gene: pemA, pem / Plasmid: pBCKS/pemA / Production host: Escherichia coli (E. coli) / Strain (production host): NM522 / References: UniProt: P0C1A9, pectinesterase
#2: Polysaccharide methyl alpha-D-galactopyranuronate-(1-4)-methyl alpha-D-galactopyranuronate-(1-4)-alpha-D- ...methyl alpha-D-galactopyranuronate-(1-4)-methyl alpha-D-galactopyranuronate-(1-4)-alpha-D-galactopyranuronic acid-(1-4)-alpha-D-galactopyranuronic acid-(1-4)-alpha-D-galactopyranuronic acid-(1-4)-methyl alpha-D-galactopyranuronate


Type: oligosaccharide / Mass: 1116.839 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
WURCS=2.0/2,6,5/[a2112A-1a_1-5_6*OC][a2112A-1a_1-5]/1-2-2-2-1-1/a4-b1_b4-c1_c4-d1_d4-e1_e4-f1WURCSPDB2Glycan 1.1.0
[][a-D-GalpA]{[(4+1)][a-D-GalpA]{[(4+1)][a-D-GalpA]{[(4+1)][a-D-GalpA]{[(4+1)][a-D-GalpA]{[(4+1)][a-D-GalpA]{}}}}}}LINUCSPDB-CARE
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 789 / Source method: isolated from a natural source / Formula: H2O
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: 2.86 Å3/Da / Density % sol: 56.94 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 6.5
Details: Ammonium sulfate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID14-3 / Wavelength: 0.93 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Mar 10, 2006 / Details: Diamond (111), Ge(220), toroidal mirror
RadiationMonochromator: Diamond(111), Ge(220) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.93 Å / Relative weight: 1
ReflectionResolution: 1.7→97.13 Å / Num. obs: 91132 / % possible obs: 99.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.7 % / Biso Wilson estimate: 13.2 Å2 / Rmerge(I) obs: 0.075 / Net I/σ(I): 16.3
Reflection shellResolution: 1.7→1.79 Å / Redundancy: 3.6 % / Rmerge(I) obs: 0.151 / Mean I/σ(I) obs: 7.6 / % possible all: 99.6

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Processing

Software
NameVersionClassification
REFMAC5.2.0005refinement
ADSCQuantumdata collection
MOSFLMdata reduction
SCALAdata scaling
REFMAC5.2.0005phasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB entry 1QJV

1qjv


Resolution: 1.7→97.13 Å / Cor.coef. Fo:Fc: 0.939 / Cor.coef. Fo:Fc free: 0.927 / SU B: 1.634 / SU ML: 0.056 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.103 / ESU R Free: 0.094 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.20389 4567 5 %RANDOM
Rwork0.18852 ---
obs0.1893 86538 99.73 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso mean: 14.356 Å2
Baniso -1Baniso -2Baniso -3
1--0.29 Å20 Å20.1 Å2
2--0.26 Å20 Å2
3---0.04 Å2
Refinement stepCycle: LAST / Resolution: 1.7→97.13 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5212 0 152 789 6153
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.0225484
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg0.9941.9667436
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.8275682
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.86223.879232
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.19215844
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.5311532
X-RAY DIFFRACTIONr_chiral_restr0.0670.2852
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.024120
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.1820.22588
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.3060.23734
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.0970.2673
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1810.265
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1050.257
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it0.511.53447
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it0.92625436
X-RAY DIFFRACTIONr_scbond_it1.39832296
X-RAY DIFFRACTIONr_scangle_it2.0854.52000
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
Refine LS restraints NCS

Dom-ID: 1 / Auth asym-ID: B / Ens-ID: 1 / Number: 2606 / Refine-ID: X-RAY DIFFRACTION

TypeRms dev position (Å)Weight position
tight positional0.030.05
tight thermal0.060.5
LS refinement shellResolution: 1.7→1.744 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.246 316 -
Rwork0.227 6356 -
obs--99.48 %

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