1LY2 Crystal structure of unliganded human CD21 SCR1-SCR2 (Complement receptor type 2) date
authors Prota, A.E., Sage, D.R., Stehle, T., Fingeroth, J.D.
compound source
R_Free 0.234
length a length b length c angle alpha angle beta angle gamma
method X-Ray Diffractionresolution 1.80
ligand NAG enzyme
note 1LY2 is a representative structure
related structures by homologous chain: 1GHQ
Primary referenceThe crystal structure of human CD21: Implications for Epstein-Barr virus and C3d binding., Prota AE, Sage DR, Stehle T, Fingeroth JD, Proc Natl Acad Sci U S A 2002 Aug 6;99(16):10641-6. PMID:12122212
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (27 Kb) [Save to disk]
  • Biological Unit Coordinates (1ly2.pdb1.gz) 24 Kb
  • LPC: Ligand-Protein Contacts for 1LY2
  • CSU: Contacts of Structural Units for 1LY2
  • Likely Quarternary Molecular Structure file(s) for 1LY2
  • Structure Factors (67 Kb)
  • Retrieve 1LY2 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1LY2 from S2C, [Save to disk]
  • Re-refined 1ly2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1LY2 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 1LY2
  • 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 1LY2, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1ly2a1, region A:0-66 [Jmol] [rasmolscript] [script source]
        - Domain d1ly2a2, region A:67-129 [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: [1ly2_A] [1ly2]
  • SWISS-PROT database: [P20023]
  • Domain organization of [CR2_HUMAN] by SWISSPFAM
  • Domain found in 1LY2: [CCP ] by SMART
  • Other resources with information on 1LY2
  • Community annotation for 1LY2 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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