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- PDB-1cxe: COMPLEX OF CGTASE WITH MALTOTETRAOSE AT ROOM TEMPERATURE AND PH 9... -

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Basic information

Entry
Database: PDB / ID: 1cxe
TitleCOMPLEX OF CGTASE WITH MALTOTETRAOSE AT ROOM TEMPERATURE AND PH 9.1 BASED ON DIFFRACTION DATA OF A CRYSTAL SOAKED WITH ALPHA-CYCLODEXTRIN
ComponentsCYCLODEXTRIN GLYCOSYLTRANSFERASE
KeywordsGLYCOSYLTRANSFERASE
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
CBM20 (carbohydrate binding type-20) domain profile. / Starch binding domain / Starch binding domain / Carbohydrate binding module family 20 / 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 ...CBM20 (carbohydrate binding type-20) domain profile. / Starch binding domain / Starch binding domain / Carbohydrate binding module family 20 / 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 / Alpha-amylase domain / Glycosyl hydrolase, family 13, catalytic domain / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycosidases / Immunoglobulin E-set / Glycoside hydrolase superfamily / Immunoglobulins / TIM Barrel / Immunoglobulin-like fold / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-maltose / alpha-maltotetraose / Cyclomaltodextrin glucanotransferase
Similarity search - Component
Biological speciesBacillus circulans (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.1 Å
AuthorsKnegtel, R.M.A. / Strokopytov, B.V. / Dijkstra, B.W.
Citation
Journal: J.Biol.Chem. / Year: 1995
Title: Crystallographic studies of the interaction of cyclodextrin glycosyltransferase from Bacillus circulans strain 251 with natural substrates and products.
Authors: Knegtel, R.M. / Strokopytov, B. / Penninga, D. / Faber, O.G. / Rozeboom, H.J. / Kalk, K.H. / Dijkhuizen, L. / Dijkstra, B.W.
#1: Journal: Biochemistry / Year: 1995
Title: X-Ray Structure of Cyclodextrin Glycosyltransferase Complexed with Acarbose. Implications for the Catalytic Mechanism of Glycosidases
Authors: Strokopytov, B. / Penninga, D. / Rozeboom, H.J. / Kalk, K.H. / Dijkhuizen, L. / Dijkstra, B.W.
#2: Journal: J.Mol.Biol. / Year: 1994
Title: Nucleotide Sequence and X-Ray Structure of Cyclodextrin Glycosyltransferase from Bacillus Circulans Strain 251 in a Maltose-Dependent Crystal Form
Authors: Lawson, C.L.L. / Van Montfort, R. / Strokopytov, B. / Rozeboom, H.J. / Kalk, K.H. / De Vries, G.E. / Penninga, D. / Dijkhuizen, L. / Dijkstra, B.W.
#3: Journal: J.Mol.Biol. / Year: 1990
Title: Maltodextrin-Dependent Crystallization of Cyclomaltodextrin Glucanotransferase from Bacillus Circulans
Authors: Lawson, C.L.L. / Bergsma, J. / Bruinenberg, P.M. / De Vries, G. / Dijkhuizen, L. / Dijkstra, B.W.
History
DepositionJul 28, 1995Processing site: BNL
Revision 1.0Dec 15, 1995Provider: repository / Type: Initial release
Revision 1.1Mar 10, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Apr 18, 2018Group: Data collection / Other / Category: diffrn_detector / pdbx_database_status
Item: _diffrn_detector.detector / _pdbx_database_status.process_site
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Non-polymer description / 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_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.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.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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: CYCLODEXTRIN GLYCOSYLTRANSFERASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)76,3497
Polymers74,5751
Non-polymers1,7746
Water7,512417
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)121.388, 111.604, 66.386
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
Atom site foot note1: CIS PROLINE - PRO 372 / 2: CIS PROLINE - PRO 506 / 3: CIS PROLINE - PRO 624 / 4: CIS PROLINE - PRO 634

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Components

#1: Protein CYCLODEXTRIN GLYCOSYLTRANSFERASE / CGTASE


Mass: 74575.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Bacillus circulans (bacteria) / Strain: 251
References: UniProt: P43379, cyclomaltodextrin glucanotransferase
#2: 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
#3: 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
#4: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ca
#5: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 417 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 3.01 Å3/Da / Density % sol: 59.19 %
Crystal growpH: 9.1 / Details: pH 9.1
Crystal grow
*PLUS
pH: 5.5 / Method: vapor diffusion
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
128.7 mg/mlprotein1drop
250 mMammonium acetate1drop
350 mg/mlalpha-cyclodextrin1drop
460 %(v/v)MPD1reservoir
5100 mMsodium Hepes1reservoir

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Data collection

Diffraction sourceWavelength: 1.5418
DetectorType: ENRAF-NONIUS FAST / Detector: DIFFRACTOMETER / Date: Jan 20, 1992
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionRedundancy: 1.22 % / Rmerge(I) obs: 0.051
Reflection
*PLUS
Highest resolution: 2.1 Å / Lowest resolution: 40.2 Å / Num. obs: 44448 / % possible obs: 82.9 % / Num. measured all: 54298 / Rmerge(I) obs: 0.051
Reflection shell
*PLUS
Highest resolution: 2.1 Å / Lowest resolution: 2.13 Å / % possible obs: 36.1 %

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Processing

Software
NameClassification
MADNESdata collection
TNTrefinement
MADNESdata reduction
RefinementResolution: 2.1→8 Å / σ(F): 0 /
RfactorNum. reflection
Rfree0.1 -
obs0.153 40003
Refinement stepCycle: LAST / Resolution: 2.1→8 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5264 0 116 417 5797
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_bond_d0.007
X-RAY DIFFRACTIONt_angle_deg1.1
X-RAY DIFFRACTIONt_dihedral_angle_d17.5
X-RAY DIFFRACTIONt_incorr_chiral_ct
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_trig_c_planes
X-RAY DIFFRACTIONt_gen_planes0.01
X-RAY DIFFRACTIONt_it2.18
X-RAY DIFFRACTIONt_nbd0.018
Software
*PLUS
Name: TNT / Classification: refinement
Refinement
*PLUS
% reflection Rfree: 10 % / Rfactor Rfree: 0.19
Solvent computation
*PLUS
Displacement parameters
*PLUS
Biso mean: 22.9 Å2
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d
X-RAY DIFFRACTIONt_dihedral_angle_deg17.5

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