3OSK	Immune System	date	Sep 09, 2010
title	Crystal Structure Of Human Ctla-4 Apo Homodimer
authors	C.Yu, F.P.Sonnen, S.Ikemizu, D.I.Stuart, R.J.C.Gilbert, S.J.Davi
compound		source
Molecule: Cytotoxic T-Lymphocyte Protein 4 Chain: A, B Fragment: Extracellular Domain, Unp Residues 36-161 Synonym: Cytotoxic T-Lymphocyte-Associated Antigen 4, Ctla- Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Cd152, Ctla4 Expression_system: Cricetulus Griseus Expression_system_common: Chinese Hamster Expression_system_taxid: 10029 Expression_system_strain: Cho-K1 Expression_system_cell: Ovary Cells Expression_system_vector_type: Plasmid Expression_system_plasmid: Pee14
symmetry	Space Group: P 21 21 21	R_factor 0.200 R_Free 0.275
crystal cell	length a length b length c angle alpha angle beta angle gamma 43.864 51.457 102.849 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	GOL, NAG	enzyme

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (87 Kb) [Save to disk] Biological Unit Coordinates (3osk.pdb1.gz) 83 Kb LPC: Ligand-Protein Contacts for 3OSK CSU: Contacts of Structural Units for 3OSK Structure Factors (166 Kb) Retrieve 3OSK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3OSK from S2C, [Save to disk] Re-refined 3osk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3OSK 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 3OSK

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 3OSK, from MSDmotif at EBI Fold representative 3osk from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3osk_A] [3osk_B] SWISS-PROT database: Domain organization of by SWISSPFAM Alignments of the sequence of 3OSK with the sequences similar proteins can be viewed for 3OSK's classification at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification at ProtoMap. Click on the Cluster number.

Other resources with information on 3OSK

Community annotation for 3OSK at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Images from IMB Jena Image Library of Biological Macromolecules.

You may enter another PDB ID code

Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]

---

OCA© by Jaime Prilusky, 1996-2010 Bioinformatics Unit Weizmann Institute of Science

---