2QPS Hydrolase date Jul 25, 2007
title "Sugar Tongs" Mutant Y380a In Complex With Acarbose
authors N.Aghajari, M.H.Jensen, S.Tranier, R.Haser
compound source
Molecule: Alpha-Amylase Type A Isozyme
Chain: A
Synonym: 1,4-Alpha-D- Glucan Glucanohydrolase, Amy1, Low Pi Amylase;
Ec: 3.2.1.1
Engineered: Yes
Mutation: Yes
Organism_scientific: Hordeum Vulgare
Organism_taxid: 4513
Gene: Amy1.1
Expression_system: Pichia Pastoris
Expression_system_taxid: 4922
symmetry Space Group: P 21 21 2
R_factor 0.240 R_Free 0.305
crystal
cell
length a length b length c angle alpha angle beta angle gamma
88.390 72.420 62.010 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.20 Å
ligand CA enzyme Hydrolase E.C.3.2.1.1 BRENDA
Gene
Ontology
ChainFunctionProcessComponent
A


Primary referenceThe 'pair of sugar tongs' site on the non-catalytic domain C of barley alpha-amylase participates in substrate binding and activity., Bozonnet S, Jensen MT, Nielsen MM, Aghajari N, Jensen MH, Kramhoft B, Willemoes M, Tranier S, Haser R, Svensson B, FEBS J. 2007 Oct;274(19):5055-67. Epub 2007 Sep 4. PMID:17803687
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (70 Kb) [Save to disk]
  • Biological Unit Coordinates (2qps.pdb1.gz) 66 Kb
  • LPC: Ligand-Protein Contacts for 2QPS
  • CSU: Contacts of Structural Units for 2QPS
  • Likely Quarternary Molecular Structure file(s) for 2QPS
  • Structure Factors (249 Kb)
  • Retrieve 2QPS in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2QPS from S2C, [Save to disk]
  • Re-refined 2qps structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2QPS in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 2QPS
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 2QPS, from MSDmotif at EBI
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2qps] [2qps_A]
  • SWISS-PROT database: [P00693]
  • Domain organization of [AMY1_HORVU] by SWISSPFAM
  • Domains found in 2QPS: [Aamy] [Alpha-amyl_C2 ] by SMART
  • Other resources with information on 2QPS
  • Community annotation for 2QPS at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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