1Z26	Gene Regulation	date	Mar 07, 2005
title	Structure Of Pyrococcus Furiosus Argonaute With Bound Tungst
authors	F.V.Rivas, N.H.Tolia, J.J.Song, J.P.Aragon, J.Liu, G.J.Hannon, L.J
compound		source
Molecule: Argonaute Chain: A Engineered: Yes Mutation: Yes		Organism_scientific: Pyrococcus Furiosus Organism_taxid: 2261 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21ripl Expression_system_vector_type: Plasmid Expression_system_plasmid: Psmt3
symmetry	Space Group: P 1 21 1	R_factor 0.224 R_Free 0.282
crystal cell	length a length b length c angle alpha angle beta angle gamma 69.100 103.501 73.225 90.00 102.46 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	WO4	enzyme
related structures	by homologous chain: 1U04, 1Z25
Gene Ontology	Chain Function Process Component A
Primary reference	Purified Argonaute2 and an siRNA form recombinant human RISC., Rivas FV, Tolia NH, Song JJ, Aragon JP, Liu J, Hannon GJ, Joshua-Tor L, Nat Struct Mol Biol 2005 Apr;12(4):340-9. Epub 2005 Mar 30. PMID:15800637

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (118 Kb) [Save to disk] Biological Unit Coordinates (1z26.pdb1.gz) 113 Kb LPC: Ligand-Protein Contacts for 1Z26 CSU: Contacts of Structural Units for 1Z26 Likely Quarternary Molecular Structure file(s) for 1Z26 Structure Factors (430 Kb) Retrieve 1Z26 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1Z26 from S2C, [Save to disk] Re-refined 1z26 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1Z26 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 1Z26

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 1Z26, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1z26] [1z26_A] SWISS-PROT database: [Q8U3D2] Domain organization of [Q8U3D2_PYRFU] by SWISSPFAM Domain found in 1Z26: [Piwi ] by SMART

Other resources with information on 1Z26

Community annotation for 1Z26 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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