1A2W Endonuclease date Jan 12, 1998
title Crystal Structure Of A 3d Domain-Swapped Dimer Of Bovine Pancreatic Ribonuclease A
authors Y.Liu, P.J.Hart, M.P.Schlunegger, D.S.Eisenberg
compound source
Molecule: Ribonuclease A
Chain: A, B
Fragment: Swapped Helical Domain
Other_details: Swapped Helical Domain Contains Residues 1- 15, Hinge Loops Contain Residues 16-22, Major Domain Contains Residues 23-124
Organism_scientific: Bos Taurus
Organism_common: Cattle
Organism_taxid: 9913
Organ: Pancreas
symmetry Space Group: P 32
R_factor 0.192 R_Free 0.256
length a length b length c angle alpha angle beta angle gamma
57.000 57.000 81.410 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.10 Å
ligand CL, SO4 enzyme Hydrolase E.C. BRENDA
related structures by homologous chain: 1J80, 1R5C
A, B
  • ribonuclease A activity

  • Primary referenceThe crystal structure of a 3D domain-swapped dimer of RNase A at a 2.1-A resolution., Liu Y, Hart PJ, Schlunegger MP, Eisenberg D, Proc Natl Acad Sci U S A 1998 Mar 31;95(7):3437-42. PMID:9520384
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (46 Kb) [Save to disk]
  • Biological Unit Coordinates (1a2w.pdb1.gz) 42 Kb
  • LPC: Ligand-Protein Contacts for 1A2W
  • CSU: Contacts of Structural Units for 1A2W
  • Likely Quarternary Molecular Structure file(s) for 1A2W
  • Structure Factors (161 Kb)
  • Retrieve 1A2W in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1A2W from S2C, [Save to disk]
  • Re-refined 1a2w structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1A2W 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 1A2W
  • 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 1A2W, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1a2wa_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1a2wb_, region B [Jmol] [rasmolscript] [script source]
  • Fold representative 1a2w from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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: [1a2w_B] [1a2w] [1a2w_A]
  • SWISS-PROT database: [P61823]
  • Domain organization of [RNAS1_BOVIN] by SWISSPFAM
  • Domain found in 1A2W: [RNAse_Pc ] by SMART
  • Other resources with information on 1A2W
  • Community annotation for 1A2W at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Domain movements in 1A2W from the Database of Macromolecular Movements.
  • Images from IMB Jena Image Library of Biological Macromolecules.

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