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- PDB-1pj9: Bacillus circulans strain 251 loop mutant 183-195 -

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Basic information

Entry
Database: PDB / ID: 1pj9
TitleBacillus circulans strain 251 loop mutant 183-195
ComponentsCyclomaltodextrin glucanotransferase
KeywordsTRANSFERASE / glycosyltransferase / cyclodextrin
Function / homology
Function and homology information


cyclomaltodextrin glucanotransferase activity / cyclomaltodextrin glucanotransferase / starch binding / alpha-amylase activity / carbohydrate metabolic process / extracellular region / metal ion binding
Similarity search - Function
Starch binding domain / CBM20 (carbohydrate binding type-20) domain profile. / Carbohydrate binding module family 20 / Starch binding domain / Carbohydrate-binding-like fold / Aamy_C / Alpha-amylase, C-terminal domain / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase ...Starch binding domain / CBM20 (carbohydrate binding type-20) domain profile. / Carbohydrate binding module family 20 / Starch binding domain / Carbohydrate-binding-like fold / Aamy_C / Alpha-amylase, C-terminal domain / 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 / Immunoglobulin-like fold / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-maltose / alpha-maltotriose / alpha-D-glucopyranose / ACETIC ACID / Cyclomaltodextrin glucanotransferase
Similarity search - Component
Biological speciesBacillus circulans (bacteria)
MethodX-RAY DIFFRACTION / FOURIER SYNTHESIS / Resolution: 2 Å
AuthorsRozeboom, H.J. / Dijkstra, B.W.
CitationJournal: PROTEINS: STRUCT.,FUNCT.,GENET. / Year: 2004
Title: Improved thermostability of bacillus circulans cyclodextrin glycosyltransferase by the introduction of a salt bridge
Authors: Leemhuis, H. / Rozeboom, H.J. / Dijkstra, B.W. / Dijkhuizen, L.
History
DepositionJun 2, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 3, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 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_assembly_gen / pdbx_struct_conn_angle / pdbx_validate_chiral / pdbx_validate_close_contact / 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_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _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 / _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_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_2
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 2.1Oct 27, 2021Group: 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

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Cyclomaltodextrin glucanotransferase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)77,28414
Polymers74,6491
Non-polymers2,63413
Water14,376798
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)117.247, 109.643, 65.352
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 Cyclomaltodextrin glucanotransferase / / Cyclodextrin-glycosyltransferase / CGTase


Mass: 74649.461 Da / Num. of mol.: 1 / Mutation: T185S, T186Y, N188D, K192R
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacillus circulans (bacteria) / Strain: 251 / Plasmid: pDP66k- / Production host: Escherichia coli (E. coli) / Strain (production host): MC1061
References: UniProt: P43379, cyclomaltodextrin glucanotransferase

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Sugars , 3 types, 6 molecules

#2: Polysaccharide alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-maltose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 342.297 Da / Num. of mol.: 3
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
#3: 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
[][b-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}LINUCSPDB-CARE
#4: Sugar ChemComp-GLC / alpha-D-glucopyranose / alpha-D-glucose / D-glucose / 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 , 4 types, 805 molecules

#5: Chemical ChemComp-MPD / (4S)-2-METHYL-2,4-PENTANEDIOL / 2-Methyl-2,4-pentanediol


Mass: 118.174 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H14O2 / Comment: precipitant*YM
#6: Chemical ChemComp-ACY / ACETIC ACID / Acetic acid


Mass: 60.052 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C2H4O2
#7: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ca
#8: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 798 / 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: 2.81 Å3/Da / Density % sol: 56.27 %
Crystal growTemperature: 295 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: MPD, Ca, HEPES, maltose, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal grow
*PLUS
Method: vapor diffusion / Details: Lawson, C.L., (1994) J. Mol. Biol., 236, 590.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
160 %(v/v)MPD1reservoir
2100 mMHEPES1reservoirpH7.5
35 %(w/v)maltose1reservoir

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Data collection

DiffractionMean temperature: 120 K
Diffraction sourceSource: ROTATING ANODE / Type: ENRAF-NONIUS / Wavelength: 1.5418 Å
DetectorType: MARRESEARCH / Detector: CCD / Date: Aug 23, 2002 / Details: Osmic mirrors
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2→50 Å / Num. all: 57530 / Num. obs: 57530 / % possible obs: 98.3 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Biso Wilson estimate: 12.1 Å2 / Rmerge(I) obs: 0.032 / Net I/σ(I): 34.7
Reflection shellResolution: 2→2.07 Å / Rmerge(I) obs: 0.115 / Mean I/σ(I) obs: 7.8 / Num. unique all: 5528 / % possible all: 96.3
Reflection
*PLUS
Lowest resolution: 32 Å / Num. obs: 57077 / % possible obs: 98.8 % / Num. measured all: 363420
Reflection shell
*PLUS
% possible obs: 96.3 % / Mean I/σ(I) obs: 8.9

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Processing

Software
NameVersionClassification
CNS1.1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: FOURIER SYNTHESIS
Starting model: PDB ENTRY 1D3C
Resolution: 2→31.9 Å / Rfactor Rfree error: 0.003 / Data cutoff high absF: 2283082.17 / Data cutoff high rms absF: 2283082.17 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.176 2975 5.2 %RANDOM
Rwork0.152 ---
obs0.152 57077 98.8 %-
all-57077 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 76.6193 Å2 / ksol: 0.428511 e/Å3
Displacement parametersBiso mean: 18.3 Å2
Baniso -1Baniso -2Baniso -3
1-2.37 Å20 Å20 Å2
2---1.15 Å20 Å2
3----1.23 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.19 Å0.2 Å
Luzzati d res low-5 Å
Luzzati sigma a0.15 Å0.15 Å
Refinement stepCycle: LAST / Resolution: 2→31.9 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5271 0 152 818 6241
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.005
X-RAY DIFFRACTIONc_angle_deg1.2
X-RAY DIFFRACTIONc_dihedral_angle_d24.4
X-RAY DIFFRACTIONc_improper_angle_d0.69
X-RAY DIFFRACTIONc_mcbond_it0.991.5
X-RAY DIFFRACTIONc_mcangle_it1.352
X-RAY DIFFRACTIONc_scbond_it1.662
X-RAY DIFFRACTIONc_scangle_it2.262.5
LS refinement shellResolution: 2→2.07 Å / Rfactor Rfree error: 0.014 / Total num. of bins used: 10
RfactorNum. reflection% reflection
Rfree0.223 271 4.9 %
Rwork0.186 5266 -
obs--97.4 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMCARBO.TOP
X-RAY DIFFRACTION3MALTOSE.PARAMWATER.TOP
X-RAY DIFFRACTION4ION.PARAMION.TOP
X-RAY DIFFRACTION5CARBO.PARAMMALTOSE.TOP
Refinement
*PLUS
Highest resolution: 2 Å / Lowest resolution: 32 Å
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_dihedral_angle_d
X-RAY DIFFRACTIONc_dihedral_angle_deg24.4
X-RAY DIFFRACTIONc_improper_angle_d
X-RAY DIFFRACTIONc_improper_angle_deg0.69
LS refinement shell
*PLUS
Rfactor Rfree: 0.224

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