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- PDB-2d3n: Crystal structure of maltohexaose-producing amylase from Bacillus... -

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Basic information

Entry
Database: PDB / ID: 2d3n
TitleCrystal structure of maltohexaose-producing amylase from Bacillus sp.707 complexed with maltohexaose
ComponentsGlucan 1,4-alpha-maltohexaosidase
KeywordsHYDROLASE / Protein-carbohydrate complex / ligand binding / maltohexaose
Function / homology
Function and homology information


glucan 1,4-alpha-maltohexaosidase / glucan 1,4-alpha-maltohexaosidase activity / starch catabolic process / alpha-amylase activity / calcium ion binding / extracellular region
Similarity search - Function
Elongation Factor Tu (Ef-tu); domain 3 - #140 / Alpha-amylase, thermostable / Alpha-amylase C-terminal, prokaryotic / Alpha-amylase C-terminal / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Elongation Factor Tu (Ef-tu); domain 3 ...Elongation Factor Tu (Ef-tu); domain 3 - #140 / Alpha-amylase, thermostable / Alpha-amylase C-terminal, prokaryotic / Alpha-amylase C-terminal / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Elongation Factor Tu (Ef-tu); domain 3 / Glycosyl hydrolase, all-beta / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Beta Barrel / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-maltose / alpha-maltotriose / alpha-maltotetraose / alpha-maltohexaose / alpha-D-glucopyranose / Glucan 1,4-alpha-maltohexaosidase
Similarity search - Component
Biological speciesBacillus sp. (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.9 Å
AuthorsKanai, R. / Haga, K. / Akiba, T. / Yamane, K. / Harata, K.
Citation
Journal: Protein Sci. / Year: 2006
Title: Role of Trp140 at subsite -6 on the maltohexaose production of maltohexaose-producing amylase from alkalophilic Bacillus sp.707
Authors: Kanai, R. / Haga, K. / Akiba, T. / Yamane, K. / Harata, K.
#1: Journal: Biochemistry / Year: 2004
Title: Biochemical and crystallographic analyses of maltohexaose-producing amylase from alkalophilic Bacillus sp. 707
Authors: Kanai, R. / Haga, K. / Akiba, T. / Yamane, K. / Harata, K.
History
DepositionSep 29, 2005Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 14, 2006Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Source and taxonomy / Version format compliance
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / 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 / struct_asym / struct_conn / 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_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_entity_id / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _pdbx_entity_nonpoly.entity_id / _pdbx_entity_nonpoly.name / _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_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_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.pdbx_leaving_atom_flag / _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_conn.ptnr2_label_seq_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 25, 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: Glucan 1,4-alpha-maltohexaosidase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)59,11312
Polymers55,4391
Non-polymers3,67411
Water8,017445
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)47.630, 82.690, 126.970
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 1 molecules A

#1: Protein Glucan 1,4-alpha-maltohexaosidase / G6-amylase / Maltohexaose-producing amylase / Exo-maltohexaohydrolase


Mass: 55438.891 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus sp. (bacteria) / Strain: 707 / Plasmid: pTUB812 / Production host: Bacillus subtilis (bacteria) / Strain (production host): 207-25
References: UniProt: P19571, glucan 1,4-alpha-maltohexaosidase

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Sugars , 5 types, 7 molecules

#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-(1-4)-alpha-D-glucopyranose / alpha-maltohexaose


Type: oligosaccharide, Oligosaccharide / Class: Substrate analog / Mass: 990.860 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-maltohexaose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,6,5/[a2122h-1a_1-5]/1-1-1-1-1-1/a4-b1_b4-c1_c4-d1_d4-e1_e4-f1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}}}}LINUCSPDB-CARE
#3: Polysaccharide alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 342.297 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-maltose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1a_1-5]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}LINUCSPDB-CARE
#4: Polysaccharide alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltotriose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 504.438 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-maltotriose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,3,2/[a2122h-1a_1-5]/1-1-1/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}LINUCSPDB-CARE
#5: Polysaccharide alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltotetraose


Type: oligosaccharide, Oligosaccharide / Class: Substrate analog / Mass: 666.578 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-maltotetraose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-4DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,4,3/[a2122h-1a_1-5]/1-1-1-1/a4-b1_b4-c1_c4-d1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}}LINUCSPDB-CARE
#6: Sugar ChemComp-GLC / alpha-D-glucopyranose / alpha-D-glucose / D-glucose / glucose


Type: D-saccharide, alpha linking / Mass: 180.156 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C6H12O6
IdentifierTypeProgram
DGlcpaCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
a-D-glucopyranoseCOMMON NAMEGMML 1.0
a-D-GlcpIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 3 types, 449 molecules

#7: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ca
#8: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#9: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 445 / Source method: isolated from a natural source / Formula: H2O

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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: 2.25 Å3/Da / Density % sol: 45.44 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 8.5
Details: MPD, Tris-HCl, Ammonium Phosphate, Calcium chloride, Sodium chloride, Maltohexaose, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: Photon Factory / Beamline: AR-NW12A / Wavelength: 1 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: Feb 18, 2004
RadiationMonochromator: Numerical link type Si(111) double crystal monochromator
Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.9→50 Å / Num. obs: 40560 / % possible obs: 98.7 % / Biso Wilson estimate: 13 Å2 / Rmerge(I) obs: 0.048
Reflection shellResolution: 1.9→1.94 Å / Rmerge(I) obs: 0.156 / % possible all: 95.1

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Processing

Software
NameVersionClassification
CNS1.1refinement
MOSFLMdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: Native structure (1WP6)

1wp6


Resolution: 1.9→6 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 1175006.84 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 2 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.184 3710 10 %RANDOM
Rwork0.155 ---
obs0.155 37095 95.1 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 101.229 Å2 / ksol: 0.722251 e/Å3
Displacement parametersBiso mean: 20.6 Å2
Baniso -1Baniso -2Baniso -3
1-6.73 Å20 Å20 Å2
2--0.09 Å20 Å2
3----6.81 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.2 Å0.16 Å
Luzzati d res low-5 Å
Luzzati sigma a0.14 Å0.08 Å
Refinement stepCycle: LAST / Resolution: 1.9→6 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3893 0 242 445 4580
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d23.1
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.69
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it1.011.5
X-RAY DIFFRACTIONc_mcangle_it1.442
X-RAY DIFFRACTIONc_scbond_it1.532
X-RAY DIFFRACTIONc_scangle_it2.12.5
LS refinement shellResolution: 1.9→2.01 Å / Rfactor Rfree error: 0.009 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.217 543 9.7 %
Rwork0.164 5045 -
obs--87.3 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2carbohydrate.paramcarbohydrate.top
X-RAY DIFFRACTION3water_rep.paramwater.top
X-RAY DIFFRACTION4ion.paramion.top
X-RAY DIFFRACTION5cis_pep.param

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