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- PDB-3old: Crystal structure of alpha-amylase in complex with acarviostatin I03 -

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Entry
Database: PDB / ID: 3old
TitleCrystal structure of alpha-amylase in complex with acarviostatin I03
ComponentsPancreatic alpha-amylase
KeywordsHYDROLASE/HYDROLASE INHIBITOR / glycosylation / HYDROLASE-HYDROLASE INHIBITOR complex / Acarviostatin I03
Function / homology
Function and homology information


polysaccharide digestion / Digestion of dietary carbohydrate / alpha-amylase / carbohydrate catabolic process / alpha-amylase activity / chloride ion binding / carbohydrate metabolic process / calcium ion binding / extracellular space / extracellular exosome / extracellular region
Similarity search - Function
Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta ...Alpha-amylase, C-terminal domain / Aamy_C / Alpha-amylase/branching enzyme, C-terminal all beta / Alpha amylase, C-terminal all-beta domain / Alpha amylase / Alpha amylase, catalytic domain / Glycosyl hydrolase, family 13, catalytic domain / Alpha-amylase domain / Golgi alpha-mannosidase II / Glycosyl hydrolase, all-beta / Glycosidases / Glycoside hydrolase superfamily / TIM Barrel / Alpha-Beta Barrel / Immunoglobulin-like / Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
alpha-maltose / alpha-maltotriose / beta-maltotriose / Chem-ACI / PYROGLUTAMIC ACID / Pancreatic alpha-amylase
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2 Å
AuthorsQin, X. / Ren, L.
CitationJournal: J.Struct.Biol. / Year: 2011
Title: Structures of human pancreatic alpha-amylase in complex with acarviostatins: Implications for drug design against type II diabetes
Authors: Qin, X. / Ren, L. / Yang, X. / Bai, F. / Wang, L. / Geng, P. / Bai, G. / Shen, Y.
History
DepositionAug 26, 2010Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Apr 13, 2011Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Oct 4, 2017Group: Data collection / Category: diffrn_detector / Item: _diffrn_detector.detector
Revision 2.0Oct 25, 2017Group: Advisory / Atomic model ...Advisory / Atomic model / Derived calculations / Structure summary
Category: atom_site / database_PDB_caveat / struct_conn
Item: _atom_site.auth_atom_id / _atom_site.label_atom_id ..._atom_site.auth_atom_id / _atom_site.label_atom_id / _chem_comp.pdbx_synonyms / _struct_conn.ptnr2_label_atom_id
Revision 3.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / 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_ref_seq_dif / 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.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 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _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 3.1Nov 1, 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

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Assembly

Deposited unit
A: Pancreatic alpha-amylase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)58,63512
Polymers55,9801
Non-polymers2,65511
Water5,891327
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)51.986, 67.760, 130.469
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 Pancreatic alpha-amylase / PA / 1 / 4-alpha-D-glucan glucanohydrolase


Mass: 55980.402 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: AMY2A / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P04746, alpha-amylase

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Sugars , 5 types, 5 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.: 1
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
[][D-1-deoxy-Glcp]{[(4+1)][a-D-Glcp]{}}LINUCSPDB-CARE
#3: Polysaccharide alpha-D-quinovopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose


Type: oligosaccharide / Mass: 488.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DQuipa1-4DGlcpa1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1a_1-5][a2122m-1a_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][a-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-4,6-deoxy-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.: 1
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)-beta-D-glucopyranose / beta-maltotriose


Type: oligosaccharide, Oligosaccharide / Class: Nutrient / Mass: 504.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: beta-maltotriose
DescriptorTypeProgram
DGlcpa1-4DGlcpa1-4DGlcpb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5][a2122h-1a_1-5]/1-2-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][b-D-Glcp]{[(4+1)][a-D-Glcp]{[(4+1)][a-D-Glcp]{}}}LINUCSPDB-CARE
#9: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 7 types, 333 molecules

#6: Chemical ChemComp-CA / CALCIUM ION


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


Mass: 35.453 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Cl
#8: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#10: Chemical ChemComp-ACI / 6-AMINO-4-HYDROXYMETHYL-CYCLOHEX-4-ENE-1,2,3-TRIOL


Mass: 175.182 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C7H13NO4 / Comment: antibiotic*YM
#11: Chemical ChemComp-PCA / PYROGLUTAMIC ACID


Type: L-peptide linking / Mass: 129.114 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C5H7NO3
#12: Chemical ChemComp-MPD / (4S)-2-METHYL-2,4-PENTANEDIOL


Mass: 118.174 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H14O2 / Comment: precipitant*YM
#13: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 327 / Source method: isolated from a natural source / Formula: H2O

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Details

Nonpolymer detailsACARVIOSTATIN I03 IS COMPOSED OF RESIDUE 501-506

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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: 2.05 Å3/Da / Density % sol: 40.07 %
Crystal growTemperature: 293 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: 60% 2-methylpentan-2,4 diol, 100mM cacodylate pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: BSRF / Beamline: 1W2B / Wavelength: 1 Å
DetectorType: MAR555 FLAT PANEL / Detector: IMAGE PLATE / Date: Dec 30, 2009
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2→41.25 Å / Num. all: 32450 / Num. obs: 32428 / % possible obs: 99.6 % / Observed criterion σ(F): 5 / Observed criterion σ(I): 2 / Biso Wilson estimate: 13.2 Å2
Reflection shellResolution: 2→2.07 Å / % possible all: 96.5

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Processing

Software
NameVersionClassification
MAR345dtbdata collection
PHASESphasing
CNS1.2refinement
HKL-2000data reduction
HKL-2000data scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1B2Y

1b2y


Resolution: 2→41.25 Å / Rfactor Rfree error: 0.005 / Data cutoff high absF: 176364.6 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber / Details: BULK SOLVENT MODEL USED
RfactorNum. reflection% reflectionSelection details
Rfree0.194 1546 4.9 %RANDOM
Rwork0.173 ---
obs0.173 31254 97.9 %-
all-31254 --
Solvent computationSolvent model: FLAT MODEL / Bsol: 61.9813 Å2 / ksol: 0.4 e/Å3
Displacement parametersBiso mean: 23.1 Å2
Baniso -1Baniso -2Baniso -3
1-10.53 Å20 Å20 Å2
2---2.47 Å20 Å2
3----8.06 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.22 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.19 Å0.13 Å
Refinement stepCycle: LAST / Resolution: 2→41.25 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3939 0 171 327 4437
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.006
X-RAY DIFFRACTIONc_angle_deg1.4
X-RAY DIFFRACTIONc_dihedral_angle_d24.3
X-RAY DIFFRACTIONc_improper_angle_d1.24
X-RAY DIFFRACTIONc_mcbond_it0.961.5
X-RAY DIFFRACTIONc_mcangle_it1.372
X-RAY DIFFRACTIONc_scbond_it1.682
X-RAY DIFFRACTIONc_scangle_it2.382.5
LS refinement shellResolution: 2→2.13 Å / Rfactor Rfree error: 0.016 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.252 248 5 %
Rwork0.199 4667 -
obs--94.1 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2water_rep.paramwater.top
X-RAY DIFFRACTION3carbohydrate.paramcarbohydrate.top
X-RAY DIFFRACTION4ion.paramion.top
X-RAY DIFFRACTION5pca.parampca.top

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