2QBX	Signaling Protein	date	Jun 18, 2007
title	Ephb2snew Antagonistic Peptide Complex
authors	J.E.Chrencik, A.Brooun, M.I.Recht, G.Nicola, E.B.Pasquale, P.Kuhn Accelerated Technologies Center For Gene To 3d Structure (A
compound		source
Molecule: Ephrin Type-B Receptor 2 Chain: A, B Fragment: Ephb2 Synonym: Tyrosine-Protein Kinase Receptor Eph-3 Ec: 2.7.10.1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Ephb2, Drt, Epht3, Epth3, Erk, Hek5, Tyro5 Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_strain: Hi-5 Expression_system_vector_type: Pfastbac1 Expression_system_plasmid: Pbac6
Molecule: Antagonistic Peptide Chain: D, P Engineered: Yes		Synthetic: Yes Other_details: Antagonistic Peptide
symmetry	Space Group: P 32	R_factor 0.194 R_Free 0.270
crystal cell	length a length b length c angle alpha angle beta angle gamma 40.183 40.183 235.025 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	SO4	enzyme	Transferase E.C.2.7.10.1 BRENDA
Primary reference	Three-dimensional structure of the EphB2 receptor in complex with an antagonistic peptide reveals a novel mode of inhibition., Chrencik JE, Brooun A, Recht MI, Nicola G, Davis LK, Abagyan R, Widmer H, Pasquale EB, Kuhn P, J Biol Chem. 2007 Dec 14;282(50):36505-13. Epub 2007 Sep 26. PMID:17897949

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (71 Kb) [Save to disk] Biological Unit Coordinates (2qbx.pdb1.gz) 33 Kb Biological Unit Coordinates (2qbx.pdb2.gz) 33 Kb Biological Unit Coordinates (2qbx.pdb3.gz) 64 Kb LPC: Ligand-Protein Contacts for 2QBX CSU: Contacts of Structural Units for 2QBX Likely Quarternary Molecular Structure file(s) for 2QBX Structure Factors (273 Kb) Retrieve 2QBX in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2QBX from S2C, [Save to disk] Re-refined 2qbx structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2QBX 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 2QBX

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 2QBX, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2qbx] [2qbx_B] [2qbx_D] [2qbx_A] [2qbx_P] SWISS-PROT database: [P29323] Domain organization of [EPHB2_HUMAN] by SWISSPFAM Domain found in 2QBX: [EPH_lbd ] by SMART

Other resources with information on 2QBX

Community annotation for 2QBX at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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