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- PDB-4j3t: Crystal structure of barley Limit dextrinase co-crystallized with... -

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Basic information

Entry
Database: PDB / ID: 4j3t
TitleCrystal structure of barley Limit dextrinase co-crystallized with 25mM maltotetraose
ComponentsLimit dextrinase
KeywordsHYDROLASE / GH13 hydrolase
Function / homology
Function and homology information


pullulanase activity / polysaccharide catabolic process / metal ion binding
Similarity search - Function
Alpha-1,6-glucosidases, pullulanase-type / Alpha-1,6-glucosidases, pullulanase-type, C-terminal / Pullulanase, N2 domain / Alpha-1,6-glucosidases, pullulanase-type, C-terminal / Pullulanase N2 domain / Rab geranylgeranyltransferase alpha-subunit, insert domain / Glycoside hydrolase, family 13, N-terminal / Carbohydrate-binding module 48 (Isoamylase N-terminal domain) / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta ...Alpha-1,6-glucosidases, pullulanase-type / Alpha-1,6-glucosidases, pullulanase-type, C-terminal / Pullulanase, N2 domain / Alpha-1,6-glucosidases, pullulanase-type, C-terminal / Pullulanase N2 domain / Rab geranylgeranyltransferase alpha-subunit, insert domain / Glycoside hydrolase, family 13, N-terminal / Carbohydrate-binding module 48 (Isoamylase N-terminal domain) / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycosidases / Immunoglobulin E-set / Glycoside hydrolase superfamily / Immunoglobulins / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-maltopentaose / IODIDE ION / Limit dextrinase
Similarity search - Component
Biological speciesHordeum vulgare (barley)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.6 Å
AuthorsSim, L. / Windahl, M.S. / Moeller, M.S. / Henriksen, A.
CitationJournal: J.Mol.Biol. / Year: 2015
Title: Oligosaccharide and substrate binding in the starch debranching enzyme barley limit dextrinase
Authors: Moeller, M.S. / Windahl, M.S. / Sim, L. / Bjstrup, M. / Abou Hachem, M. / Hindsgaul, O. / Palcic, M. / Svensson, B. / Henriksen, A.
History
DepositionFeb 6, 2013Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Feb 12, 2014Provider: repository / Type: Initial release
Revision 1.1Oct 14, 2015Group: Database references
Revision 1.2May 30, 2018Group: Data collection / Category: diffrn_source / Item: _diffrn_source.pdbx_synchrotron_site
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Derived calculations / Structure summary
Category: atom_site / atom_site_anisotrop ...atom_site / atom_site_anisotrop / chem_comp / entity / entity_name_com / 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_molecule_features / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_struct_conn_angle / pdbx_struct_special_symmetry / struct_asym / struct_conn / struct_ref_seq_dif / 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_anisotrop.pdbx_auth_asym_id / _atom_site_anisotrop.pdbx_auth_seq_id / _atom_site_anisotrop.pdbx_label_asym_id / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.type / _pdbx_struct_assembly_gen.asym_id_list / _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.ptnr2_label_asym_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 / _pdbx_struct_special_symmetry.label_asym_id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_ptnr1_label_alt_id / _struct_conn.pdbx_ptnr2_label_alt_id / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_ref_seq_dif.details
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Nov 8, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Limit dextrinase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)101,79313
Polymers99,7471
Non-polymers2,04612
Water18,4831026
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)175.090, 86.230, 61.510
Angle α, β, γ (deg.)90.000, 95.580, 90.000
Int Tables number5
Space group name H-MC121
Components on special symmetry positions
IDModelComponents
11A-1089-

HOH

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Components

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Protein / Sugars , 2 types, 2 molecules A

#1: Protein Limit dextrinase


Mass: 99746.727 Da / Num. of mol.: 1 / Fragment: UNP Residues 22-905
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Hordeum vulgare (barley) / Plasmid: pET28a / Production host: Escherichia coli (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: Q9FYY0, pullulanase
#2: Polysaccharide alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D- ...alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltopentaose


Type: oligosaccharide, Oligosaccharide / Class: Substrate analog / Mass: 828.719 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-maltopentaose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,5,4/[a2122h-1a_1-5]/1-1-1-1-1/a4-b1_b4-c1_c4-d1_d4-e1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}}LINUCSPDB-CARE

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Non-polymers , 4 types, 1037 molecules

#3: Chemical ChemComp-CA / CALCIUM ION


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


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#5: Chemical
ChemComp-IOD / IODIDE ION


Mass: 126.904 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: I
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 1026 / Source method: isolated from a natural source / Formula: H2O

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Details

Sequence detailsTHESE RESIDUES REPRESENT NATURAL VARIANTS.

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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: 2.32 Å3/Da / Density % sol: 46.9 %
Crystal growTemperature: 298 K / Method: vapor diffusion, hanging drop
Details: 20% PEG 3350, 0.3M NaI, VAPOR DIFFUSION, HANGING DROP, temperature 298K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: MAX II / Beamline: I911-2 / Wavelength: 1.04 Å
DetectorType: MAR CCD 165 mm / Detector: CCD / Date: Jun 23, 2012
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.04 Å / Relative weight: 1
ReflectionResolution: 1.6→30 Å / Num. obs: 119393 / % possible obs: 99.4 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 22.138 Å2 / Rmerge(I) obs: 0.063 / Net I/σ(I): 14.45
Reflection shell

Diffraction-ID: 1

Resolution (Å)Highest resolution (Å)Rmerge F obsRmerge(I) obsMean I/σ(I) obsNum. measured obsNum. possibleNum. unique obsRrim(I) all% possible all
1.6-1.70.8920.3973.436828119265187640.46797.4
1.7-1.810.950.2665.116824518207181870.31199.9
1.81-1.960.980.168.146357916898168770.18799.9
1.96-2.140.9910.10112.425876215569155550.11899.9
2.14-2.390.9950.07117.25345314131141190.08299.9
2.39-2.760.9960.05621.454721212453124440.06599.9
2.76-3.370.9980.04227.713992410590105750.04999.9
3.37-4.740.9980.03433.4731000824682420.04100
4.740.9980.03134.2716932472646300.03798

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Processing

Software
NameVersionClassificationNB
XSCALEdata scaling
REFMACrefinement
PDB_EXTRACT3.11data extraction
XDSdata reduction
REFMACphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2Y4S
Resolution: 1.6→29.7 Å / Cor.coef. Fo:Fc: 0.974 / Cor.coef. Fo:Fc free: 0.96 / WRfactor Rfree: 0.1646 / WRfactor Rwork: 0.1258 / Occupancy max: 1 / Occupancy min: 0.14 / FOM work R set: 0.9024 / SU B: 2.998 / SU ML: 0.047 / SU R Cruickshank DPI: 0.0932 / SU Rfree: 0.0761 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.093 / ESU R Free: 0.076 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES: REFINED INDIVIDUALLY
RfactorNum. reflection% reflectionSelection details
Rfree0.1769 5969 5 %RANDOM
Rwork0.1325 ---
obs0.1347 119378 99.51 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 79.6 Å2 / Biso mean: 17.8056 Å2 / Biso min: 5.83 Å2
Baniso -1Baniso -2Baniso -3
1--0.01 Å20 Å20.03 Å2
2---0 Å2-0 Å2
3---0 Å2
Refinement stepCycle: LAST / Resolution: 1.6→29.7 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6715 0 67 1026 7808
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.0197042
X-RAY DIFFRACTIONr_bond_other_d0.0010.026444
X-RAY DIFFRACTIONr_angle_refined_deg1.2821.9619612
X-RAY DIFFRACTIONr_angle_other_deg1.051314809
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.8915889
X-RAY DIFFRACTIONr_dihedral_angle_2_deg36.40523.95319
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.84151075
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.4571543
X-RAY DIFFRACTIONr_chiral_restr0.0780.21077
X-RAY DIFFRACTIONr_gen_planes_refined0.0050.0218060
X-RAY DIFFRACTIONr_gen_planes_other0.0020.021645
X-RAY DIFFRACTIONr_rigid_bond_restr5.214313484
X-RAY DIFFRACTIONr_sphericity_free29.8175259
X-RAY DIFFRACTIONr_sphericity_bonded7.593514081
LS refinement shellResolution: 1.599→1.641 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.27 418 -
Rwork0.186 7943 -
all-8361 -
obs--95.46 %

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