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- PDB-1qhp: FIVE-DOMAIN ALPHA-AMYLASE FROM BACILLUS STEAROTHERMOPHILUS, MALTO... -

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Basic information

Entry
Database: PDB / ID: 1qhp
TitleFIVE-DOMAIN ALPHA-AMYLASE FROM BACILLUS STEAROTHERMOPHILUS, MALTOSE COMPLEX
ComponentsALPHA-AMYLASE
KeywordsHYDROLASE / AMYLASE / GLYCOSIDE HYDROLASE / STARCH DEGRADATION
Function / homology
Function and homology information


glucan 1,4-alpha-maltohydrolase / glucan 1,4-alpha-maltohydrolase activity / starch binding / alpha-amylase activity / carbohydrate metabolic process / metal ion binding
Similarity search - Function
Maltogenic alpha-amylase, CBM20 domain / Carbohydrate binding module family 20 / Starch binding domain / CBM20 (carbohydrate binding type-20) domain profile. / Starch binding domain / Carbohydrate-binding-like fold / Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain ...Maltogenic alpha-amylase, CBM20 domain / Carbohydrate binding module family 20 / Starch binding domain / CBM20 (carbohydrate binding type-20) domain profile. / Starch binding domain / Carbohydrate-binding-like fold / Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase / IPT/TIG domain / IPT domain / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase 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-maltose / Maltogenic alpha-amylase
Similarity search - Component
Biological speciesGeobacillus stearothermophilus (bacteria)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 1.7 Å
AuthorsDauter, Z. / Dauter, M. / Brzozowski, A.M. / Christensen, S. / Borchert, T.V. / Beier, L. / Wilson, K.S. / Davies, G.J.
CitationJournal: Biochemistry / Year: 1999
Title: X-ray structure of Novamyl, the five-domain "maltogenic" alpha-amylase from Bacillus stearothermophilus: maltose and acarbose complexes at 1.7A resolution.
Authors: Dauter, Z. / Dauter, M. / Brzozowski, A.M. / Christensen, S. / Borchert, T.V. / Beier, L. / Wilson, K.S. / Davies, G.J.
History
DepositionMay 25, 1999Deposition site: PDBE / Processing site: RCSB
Revision 1.0May 31, 2000Provider: repository / Type: Initial release
Revision 1.1Apr 26, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Non-polymer description / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / 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_conn_angle / pdbx_validate_chiral / struct_asym / struct_conn / struct_conn_type / 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.label_alt_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.occupancy / _atom_site.type_symbol / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.mon_nstd_flag / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.src_method / _entity.type / _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_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_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_atom_id / _pdbx_validate_chiral.auth_comp_id / _pdbx_validate_chiral.auth_seq_id / _struct_asym.entity_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Dec 21, 2022Group: Database references / Structure summary / Category: chem_comp / database_2 / 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_ref_seq_dif.details
Revision 2.2Sep 20, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ALPHA-AMYLASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)76,8009
Polymers75,2151
Non-polymers1,5858
Water20,5011138
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)89.760, 89.760, 185.710
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number152
Space group name H-MP3121

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Components

#1: Protein ALPHA-AMYLASE / / E.C.3.2.1.133 / "MALTOGENIC" ALPHA-AMYLASE


Mass: 75214.812 Da / Num. of mol.: 1 / Fragment: INTACT PROTEIN, ALL 5 DOMAINS
Source method: isolated from a genetically manipulated source
Details: MALTOSE CONTAINING
Source: (gene. exp.) Geobacillus stearothermophilus (bacteria)
Production host: Bacillus subtilis (bacteria)
References: UniProt: P19531, glucan 1,4-alpha-maltohydrolase
#2: Polysaccharide
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 342.297 Da / Num. of mol.: 4
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
[][b-D-Glcp]{[(4+1)][a-D-Glcp]{}}LINUCSPDB-CARE
#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ca
#4: Chemical ChemComp-SO4 / SULFATE ION / Sulfate


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


Mass: 18.015 Da / Num. of mol.: 1138 / 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: 2.87 Å3/Da / Density % sol: 57.15 %
Crystal growpH: 6
Details: 19 MG ML-1 ENZYME IN 10MM TRIS-HCL BUFFER PH 6.0, 0.2M NACL, 5MM CACL2. THE WELL SOLUTION CONTAINED 0.9M LI2SO4, 2.5% PEH 1450, 50MM TEA BUFFER (PH 6.5) AND 100MM MALTOSE.
Crystal grow
*PLUS
Method: vapor diffusion, hanging drop
Details: drop consists of 1:1 mixture of well and protein solutions
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
119 mg/mlenzyme1drop
210 mMTris-HCl1drop
30.2 M1dropNaCl
45 mM1dropCaCl2
50.9 M1reservoirLi2SO4
62.5 %(w/v)PEG14501reservoir
750 mMTEA1reservoir
8100 mMmaltose1reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Details: LONG FOCUSSING MIRRORS
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 1.7→20 Å / Num. obs: 460513 / % possible obs: 95.8 % / Redundancy: 5.3 % / Rmerge(I) obs: 0.08 / Rsym value: 8 / Net I/σ(I): 17.8
Reflection shellResolution: 1.7→1.73 Å / Redundancy: 2.9 % / Rmerge(I) obs: 0.45 / Mean I/σ(I) obs: 3.1 / Rsym value: 45 / % possible all: 92.5
Reflection
*PLUS
Num. obs: 87912 / Num. measured all: 460513
Reflection shell
*PLUS
% possible obs: 92.5 %

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Processing

Software
NameClassification
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1CDG

1cdg


Resolution: 1.7→20 Å / Cross valid method: THROUGHOUT / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.191 1359 5 %RANDOM
Rwork0.153 ---
obs-91930 95.8 %-
Refinement stepCycle: LAST / Resolution: 1.7→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5352 0 101 1138 6591
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONp_bond_d0.0080.02
X-RAY DIFFRACTIONp_angle_d0.0220.04
X-RAY DIFFRACTIONp_angle_deg
X-RAY DIFFRACTIONp_planar_d0.0240.05
X-RAY DIFFRACTIONp_hb_or_metal_coord
X-RAY DIFFRACTIONp_mcbond_it1.23
X-RAY DIFFRACTIONp_mcangle_it1.65
X-RAY DIFFRACTIONp_scbond_it2.66
X-RAY DIFFRACTIONp_scangle_it3.28
X-RAY DIFFRACTIONp_plane_restr0.0080.04
X-RAY DIFFRACTIONp_chiral_restr0.0970.15
X-RAY DIFFRACTIONp_singtor_nbd0.1710.3
X-RAY DIFFRACTIONp_multtor_nbd0.240.3
X-RAY DIFFRACTIONp_xhyhbond_nbd
X-RAY DIFFRACTIONp_xyhbond_nbd
X-RAY DIFFRACTIONp_planar_tor4.27
X-RAY DIFFRACTIONp_staggered_tor11.615
X-RAY DIFFRACTIONp_orthonormal_tor
X-RAY DIFFRACTIONp_transverse_tor27.520
X-RAY DIFFRACTIONp_special_tor
Software
*PLUS
Name: REFMAC / Classification: refinement
LS refinement shell
*PLUS
Rfactor Rfree: 0.278 / Rfactor Rwork: 0.225

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