1H3B Isomerase date Aug 25, 2002
title Squalene-Hopene Cyclase
authors A.Lenhart, D.J.Reinert, W.A.Weihofen, J.D.Aebi, H.Dehmlow, O.H.Mo G.E.Schulz
compound source
Molecule: Squalene--Hopene Cyclase
Chain: A, B, C
Synonym: Shc
Ec: 5.4.99.17
Engineered: Yes
Organism_scientific: Alicyclobacillus Acidocaldarius
Organism_taxid: 405212
Expression_system: Escherichia Coli K-12
Expression_system_taxid: 83333
Expression_system_variant: Jm105
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pkk223-3
Other_details: Thermostable, Acidophilic
symmetry Space Group: P 32 2 1
R_factor 0.206 R_Free 0.250
crystal
cell
length a length b length c angle alpha angle beta angle gamma
140.663 140.663 243.121 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.80 Å
ligand C8E, R46 BindingDB enzyme Isomerase E.C.5.4.99.17 BRENDA
related structures by homologous chain: 1H37, 3SQC
Gene
Ontology
ChainFunctionProcessComponent
A, C, B


Primary referenceBinding structures and potencies of oxidosqualene cyclase inhibitors with the homologous squalene-hopene cyclase., Lenhart A, Reinert DJ, Aebi JD, Dehmlow H, Morand OH, Schulz GE, J Med Chem. 2003 May 22;46(11):2083-92. PMID:12747780
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (289 Kb) [Save to disk]
  • Biological Unit Coordinates (1h3b.pdb1.gz) 190 Kb
  • Biological Unit Coordinates (1h3b.pdb2.gz) 192 Kb
  • Biological Unit Coordinates (1h3b.pdb3.gz) 191 Kb
  • LPC: Ligand-Protein Contacts for 1H3B
  • CSU: Contacts of Structural Units for 1H3B
  • Likely Quarternary Molecular Structure file(s) for 1H3B
  • Structure Factors (503 Kb)
  • Retrieve 1H3B in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1H3B from S2C, [Save to disk]
  • Re-refined 1h3b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1H3B 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 1H3B
  • 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 1H3B, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1h3ba1, region A:10-36,A:308-629 [Jmol] [rasmolscript] [script source]
        - Domain d1h3ba2, region A:37-307 [Jmol] [rasmolscript] [script source]
        - Domain d1h3bb1, region B:10-36,B:308-629 [Jmol] [rasmolscript] [script source]
        - Domain d1h3bb2, region B:37-307 [Jmol] [rasmolscript] [script source]
        - Domain d1h3bc1, region C:10-36,C:308-629 [Jmol] [rasmolscript] [script source]
        - Domain d1h3bc2, region C:37-307 [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1h3b_C] [1h3b_B] [1h3b_A] [1h3b]
  • SWISS-PROT database: [P33247]
  • Domain organization of [SQHC_ALIAD] by SWISSPFAM
  • Other resources with information on 1H3B
  • Community annotation for 1H3B 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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