1RIO	Transcription Dna	date	Nov 17, 2003
title	Structure Of Bacteriophage Lambda Ci-Ntd In Complex With Sig Of Thermus Aquaticus Bound To Dna
authors	D.Jain, B.E.Nickels, L.Sun, A.Hochschild, S.A.Darst
compound		source
Molecule: 27-Mer Chain: U Engineered: Yes Other_details: Chemically Synthesized		Synthetic: Yes
Molecule: 27-Mer Chain: T Engineered: Yes Other_details: Chemically Synthesized		Synthetic: Yes
Molecule: Sigma Factor Siga Chain: H Fragment: Sigma Region 4 Engineered: Yes		Organism_scientific: Thermus Aquaticus Organism_taxid: 271 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pao6
Molecule: Repressor Protein Ci Chain: A, B Fragment: Ci-N-Terminus Domain Engineered: Yes		Organism_scientific: Enterobacteria Phage Lambda Organism_taxid: 10710 Gene: Ci Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21a
symmetry	Space Group: P 1 21 1	R_factor 0.216 R_Free 0.254
crystal cell	length a length b length c angle alpha angle beta angle gamma 47.256 71.269 77.199 90.00 91.34 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	CA, MPD, MSE	enzyme
related structures	by homologous chain: 1KU3, 1KU7, 1LLI
Gene Ontology	Chain Function Process Component A, B H
Primary reference	Structure of a ternary transcription activation complex., Jain D, Nickels BE, Sun L, Hochschild A, Darst SA, Mol Cell 2004 Jan;13(1):45-53. PMID:14731393

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (74 Kb) [Save to disk] Biological Unit Coordinates (1rio.pdb1.gz) 66 Kb LPC: Ligand-Protein Contacts for 1RIO CSU: Contacts of Structural Units for 1RIO Likely Quarternary Molecular Structure file(s) for 1RIO Structure Factors (215 Kb) Retrieve 1RIO in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1RIO from S2C, [Save to disk] Re-refined 1rio structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1RIO 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 1RIO

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 1RIO, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1rioa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1riob_, region B [Jmol] [rasmolscript] [script source]     - Domain d1rioh_, region H [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1rio_A] [1rio_H] [1rio_T] [1rio] [1rio_U] [1rio_B] SWISS-PROT database: [Q9EZJ8] [P03034] Domain organization of [Q9EZJ8_THEAQ] [RPC1_LAMBD] by SWISSPFAM Domain found in 1RIO: [HTH_XRE ] by SMART

Other resources with information on 1RIO

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

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