2AFM Transferase date Jul 26, 2005
title Crystal Structure Of Human Glutaminyl Cyclase At Ph 6.5
authors K.F.Huang, Y.L.Liu, W.J.Cheng, T.P.Ko, A.H.J.Wang
compound source
Molecule: Glutaminyl-Peptide Cyclotransferase
Chain: A, B
Fragment: Residues 33-361
Synonym: Qc, Glutaminyl-Trna Cyclotransferase, Glutaminyl C
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Qpct
Expression_system: Escherichia Coli
Expression_system_taxid: 469008
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet32a
symmetry Space Group: H 3 2
R_factor 0.182 R_Free 0.204
length a length b length c angle alpha angle beta angle gamma
119.029 119.029 332.938 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.66 Å
ligand SO4, ZN enzyme Transferase E.C. BRENDA
A, B

Primary referenceCrystal structures of human glutaminyl cyclase, an enzyme responsible for protein N-terminal pyroglutamate formation., Huang KF, Liu YL, Cheng WJ, Ko TP, Wang AH, Proc Natl Acad Sci U S A. 2005 Sep 13;102(37):13117-22. Epub 2005 Aug 31. PMID:16135565
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (123 Kb) [Save to disk]
  • Biological Unit Coordinates (2afm.pdb1.gz) 61 Kb
  • Biological Unit Coordinates (2afm.pdb2.gz) 59 Kb
  • Biological Unit Coordinates (2afm.pdb3.gz) 348 Kb
  • LPC: Ligand-Protein Contacts for 2AFM
  • CSU: Contacts of Structural Units for 2AFM
  • Likely Quarternary Molecular Structure file(s) for 2AFM
  • Structure Factors (1531 Kb)
  • Retrieve 2AFM in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2AFM from S2C, [Save to disk]
  • Re-refined 2afm structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 2AFM 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 2AFM
  • Cartoon representation from PDB Cartoon
  • 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
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 2AFM, from MSDmotif at EBI
  • Fold representative 2afm from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [2afm_A] [2afm] [2afm_B]
  • SWISS-PROT database: [Q16769]
  • Domain organization of [QPCT_HUMAN] by SWISSPFAM
  • Other resources with information on 2AFM
  • Community annotation for 2AFM 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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