3BLK

Role of aromatic residues in starch binding


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 

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Ligand Structure Quality Assessment 


This is version 3.2 of the entry. See complete history


Literature

Structure-function relationships in human salivary alpha-amylase: role of aromatic residues in a secondary binding site

Ragunath, C.Manuel, S.G.A.Kasinathan, C.Ramasubbu, N.

(2008) Biologia (Bratisl) 63: 1028-1034


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Alpha-amylase 1496Homo sapiensMutation(s): 1 
Gene Names: AMY1AAMY1
EC: 3.2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P0DUB6 (Homo sapiens)
Explore P0DUB6 
Go to UniProtKB:  P0DUB6
GTEx:  ENSG00000237763 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DUB6
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
4-amino-4,6-dideoxy-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
B, C
2N/A
Glycosylation Resources
GlyTouCan:  G90989WB
GlyCosmos:  G90989WB
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
PCA
Query on PCA
A
L-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.282α = 90
b = 75.046β = 90
c = 135.013γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-11-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2019-12-25
    Changes: Data collection, Database references, Derived calculations, Polymer sequence
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 3.1: 2021-10-20
    Changes: Database references, Derived calculations, Structure summary
  • Version 3.2: 2023-08-30
    Changes: Data collection, Refinement description