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- PDB-1qho: FIVE-DOMAIN ALPHA-AMYLASE FROM BACILLUS STEAROTHERMOPHILUS, MALTO... -
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Open data
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Basic information
Entry | Database: PDB / ID: 1qho | ||||||||||||
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Title | FIVE-DOMAIN ALPHA-AMYLASE FROM BACILLUS STEAROTHERMOPHILUS, MALTOSE/ACARBOSE COMPLEX | ||||||||||||
![]() | ALPHA-AMYLASE | ||||||||||||
![]() | HYDROLASE / AMYLASE / GLYCOSIDE HYDROLASE / STARCH DEGRADATION | ||||||||||||
Function / homology | ![]() 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 | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ![]() ![]() | ||||||||||||
![]() | Dauter, Z. / Dauter, M. / Brzozowski, A.M. / Christensen, S. / Borchert, T.V. / Beier, L. / Wilson, K.S. / Davies, G.J. | ||||||||||||
![]() | ![]() 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 |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 179.3 KB | Display | ![]() |
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PDB format | ![]() | 136.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.5 MB | Display | ![]() |
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Full document | ![]() | 1.5 MB | Display | |
Data in XML | ![]() | 36.8 KB | Display | |
Data in CIF | ![]() | 60.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1qhpC ![]() 1cdgS C: citing same article ( S: Starting model for refinement |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
-Protein , 1 types, 1 molecules A
#1: Protein | Mass: 75214.812 Da / Num. of mol.: 1 / Fragment: INTACT PROTEIN, ALL 5 DOMAINS Source method: isolated from a genetically manipulated source Details: CONTAINS AN ACARBOSE-DERIVED HEXASACCHARIDE AND MALTOSE Source: (gene. exp.) ![]() ![]() Production host: ![]() ![]() References: UniProt: P19531, glucan 1,4-alpha-maltohydrolase |
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-Sugars , 2 types, 3 molecules
#2: Polysaccharide | #3: Polysaccharide | alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-4-amino-4,6- ...alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-4-amino-4,6-dideoxy-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranose / acarbose-derived hexasaccharide | |
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-Non-polymers , 3 types, 1110 molecules ![](data/chem/img/CA.gif)
![](data/chem/img/SO4.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/SO4.gif)
![](data/chem/img/HOH.gif)
#4: Chemical | #5: Chemical | ChemComp-SO4 / | #6: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.87 Å3/Da / Density % sol: 57.21 % | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Crystal grow | pH: 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. 20MM ACARBOSE WAS ...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. 20MM ACARBOSE WAS LATER SOAKED INTO CRYSTALS | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Crystal grow | *PLUS Method: vapor diffusion, hanging dropDetails: drop consists of 1:1 mixture of well and protein solutions | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: MARRESEARCH / Detector: IMAGE PLATE / Details: LONG FOCUSSING MIRRORS |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 1.7→20 Å / Num. obs: 630805 / % possible obs: 99.1 % / Redundancy: 6.7 % / Rmerge(I) obs: 0.08 / Net I/σ(I): 19.7 |
Reflection shell | Resolution: 1.7→1.73 Å / Redundancy: 4.6 % / Rmerge(I) obs: 0.49 / Mean I/σ(I) obs: 3.1 / % possible all: 97.2 |
Reflection | *PLUS Num. obs: 94506 / Num. measured all: 630805 |
Reflection shell | *PLUS % possible obs: 97.2 % |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 1CDG Resolution: 1.7→20 Å / Cross valid method: THROUGHOUT / σ(F): 0
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Refinement step | Cycle: LAST / Resolution: 1.7→20 Å
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Refine LS restraints |
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