1IV5 Immune System date Mar 14, 2002
title New Crystal Form Of Human Cd81 Large Extracellular Loop.
authors K.Kitadokoro, M.Bolognesi, G.Grandi, P.Marco, G.Galli, R.Petracca, F.Fabiana
compound source
Molecule: Cd81 Antigen
Chain: A, B
Fragment: Cd81 Large Extracellular Loop
Synonym: 26 Kda Cell Surface Protein Tapa-1
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pezz 18
symmetry Space Group: P 64
R_factor 0.229 R_Free 0.282
length a length b length c angle alpha angle beta angle gamma
102.052 102.052 35.283 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.60 Å
related structures by homologous chain: 1G8Q
A, B

Primary referenceSubunit association and conformational flexibility in the head subdomain of human CD81 large extracellular loop., Kitadokoro K, Ponassi M, Galli G, Petracca R, Falugi F, Grandi G, Bolognesi M, Biol Chem 2002 Sep;383(9):1447-52. PMID:12437138
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (34 Kb) [Save to disk]
  • Biological Unit Coordinates (1iv5.pdb1.gz) 29 Kb
  • CSU: Contacts of Structural Units for 1IV5
  • Likely Quarternary Molecular Structure file(s) for 1IV5
  • Structure Factors (45 Kb)
  • Retrieve 1IV5 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1IV5 from S2C, [Save to disk]
  • Re-refined 1iv5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1IV5 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 1IV5
  • 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 1IV5, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1iv5a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1iv5b_, region B [Jmol] [rasmolscript] [script source]
  • Fold representative 1iv5 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: [1iv5_B] [1iv5_A] [1iv5]
  • SWISS-PROT database: [P60033]
  • Belongs to the tetraspanin (tetraspanin) family according to TCDB.
  • Domain organization of [CD81_HUMAN] by SWISSPFAM
  • Other resources with information on 1IV5
  • Community annotation for 1IV5 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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