3BLP

Role of aromatic residues in human salivary alpha-amylase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

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Literature

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

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

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


Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Alpha-amylase 1X496Homo sapiensMutation(s): 1 
Gene Names: AMY1A, AMY1
EC: 3.2.1.1
Find proteins for P0DUB6 (Homo sapiens)
Explore P0DUB6 
Go to UniProtKB:  P0DUB6
NIH Common Fund Data Resources
GTEx  ENSG00000237763
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
4-amino-4,6-dideoxy-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose
A, B
2 N/A Oligosaccharides Interaction
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HMC
Query on HMC
Download Ideal Coordinates CCD File 
X
5-HYDROXYMETHYL-CHONDURITOL
C7 H12 O5
PJPGMULJEYSZBS-VZFHVOOUSA-N		 Ligand Interaction
CA
Query on CA
Download Ideal Coordinates CCD File 
X
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
CL
Query on CL
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X
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA		XL-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.085α = 90
b = 74.873β = 90
c = 134.69γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
REFMACphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2007-12-11 
  • Released Date: 2008-11-18 
    • Deposition Author(s): Ramasubbu, N.

Revision History 

  • Version 1.0: 2008-11-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, 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