1SI3	Gene Regulation Rna	date	Feb 27, 2004
title	Crystal Structure Of The Paz Domain Of Human Eif2c1 In Complex With A 9-Mer Sirna-Like Duplex
authors	K.Ye, J.B.Ma, D.Patel
compound		source
Molecule: 5'-R(Cpgpupgpapcpupcpu)-3' Chain: B Engineered: Yes		Synthetic: Yes
Molecule: Eukaryotic Translation Initiation Factor 2c 1 Chain: A Fragment: Paz Domain (Residues 225-369) Synonym: Eif2c 1, Eif-2c 1, Putative Rna-Binding Protein Q99, Argonaute1; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Eif2c1 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet19b
symmetry	Space Group: P 64	R_factor 0.247 R_Free 0.304
crystal cell	length a length b length c angle alpha angle beta angle gamma 99.799 99.799 34.933 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	MSE	enzyme
note	1SI3 (Molecule of the Month:pdb98)
related structures	by homologous chain: 1R4K, 1SI2
Primary reference	Structural basis for overhang-specific small interfering RNA recognition by the PAZ domain., Ma JB, Ye K, Patel DJ, Nature 2004 May 20;429(6989):318-22. PMID:15152257

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (29 Kb) [Save to disk] Biological Unit Coordinates (1si3.pdb1.gz) 48 Kb LPC: Ligand-Protein Contacts for 1SI3 CSU: Contacts of Structural Units for 1SI3 Likely Quarternary Molecular Structure file(s) for 1SI3 Structure Factors (66 Kb) Retrieve 1SI3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SI3 from S2C, [Save to disk] Re-refined 1si3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SI3 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 1SI3

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 1SI3, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1si3a_, region A [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1si3_B] [1si3] [1si3_A] SWISS-PROT database: [Q9UL18] Domain organization of [AGO1_HUMAN] by SWISSPFAM Domain found in 1SI3: [PAZ ] by SMART

Other resources with information on 1SI3

Community annotation for 1SI3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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