2I61	Toxin	date	Aug 27, 2006
title	Depressant Anti-Insect Neurotoxin, Lqhit2 From Leiurus Quinq Hebraeus
authors	F.Frolow, M.Gurevitz, I.Karbat, M.Turkov, D.Gordon
compound		source
Molecule: Insect Toxin 2 Chain: A Fragment: Peptide Modifier Of Voltage-Gated Sodium Channels Synonym: Lqh It2, Lqhit2, Lqhit2-44, Anti-Insect Depressant Neurotoxin; Engineered: Yes		Organism_scientific: Leiurus Quinquestriatus Hebraeus Organism_taxid: 6884 Strain: Hebraeus Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11c
symmetry	Space Group: P 1 21 1	R_factor 0.096 R_Free 0.120
crystal cell	length a length b length c angle alpha angle beta angle gamma 19.660 51.423 28.917 90.00 107.75 90.00
method	X-Ray Diffraction	resolution	1.20 Å
ligand	ACY, CO2, EDO, LI, SO4	enzyme
Gene Ontology	Chain Function Process Component A toxin activity
Primary reference	X-ray Structure and Mutagenesis of the Scorpion Depressant Toxin LqhIT2 Reveals Key Determinants Crucial for Activity and Anti-Insect Selectivity., Karbat I, Turkov M, Cohen L, Kahn R, Gordon D, Gurevitz M, Frolow F, J Mol Biol. 2006 Nov 10;. PMID:17166514

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (30 Kb) [Save to disk] Biological Unit Coordinates (2i61.pdb1.gz) 25 Kb LPC: Ligand-Protein Contacts for 2I61 CSU: Contacts of Structural Units for 2I61 Likely Quarternary Molecular Structure file(s) for 2I61 Structure Factors (104 Kb) Retrieve 2I61 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2I61 from S2C, [Save to disk] Re-refined 2i61 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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Visual 3D analysis of 2I61

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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 2I61, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2i61_A] [2i61] SWISS-PROT database: [Q26292] Domain organization of [SIX2_LEIQH] by SWISSPFAM Domain found in 2I61: [Knot1 ] by SMART

Other resources with information on 2I61

Community annotation for 2I61 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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