1QPZ	Transcription Dna	date	Jun 01, 1999
title	Purine Repressor-Hypoxanthine-Palindromic Operator Complex
authors	A.Glasfeld, A.N.Koehler, M.A.Schumacher, R.G.Brennan
compound		source
Molecule: Dna (5'- D(Tpapcpgpcpapapapcpgptptptpgpcpgpt)-3'); Chain: M Engineered: Yes		Synthetic: Yes
Molecule: Protein (Purine Nucleotide Synthesis Repressor) Chain: A Synonym: Pura Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Purr Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 Lambda De3 Expression_system_vector_type: Plasmid Expression_system_vector: Pet24a Expression_system_plasmid: Pdna100\:K55a Expression_system_gene: Purr
symmetry	Space Group: C 2 2 21	R_factor 0.183 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 176.340 95.180 81.640 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	HPA	enzyme
related structures	by homologous chain: 1JFT, 1JHZ
Gene Ontology	Chain Function Process Component A
Primary reference	The role of lysine 55 in determining the specificity of the purine repressor for its operators through minor groove interactions., Glasfeld A, Koehler AN, Schumacher MA, Brennan RG, J Mol Biol 1999 Aug 13;291(2):347-61. PMID:10438625

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (1qpz.pdb1.gz) 125 Kb LPC: Ligand-Protein Contacts for 1QPZ CSU: Contacts of Structural Units for 1QPZ Likely Quarternary Molecular Structure file(s) for 1QPZ Retrieve 1QPZ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QPZ from S2C, [Save to disk]

View 1QPZ 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 1QPZ

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QPZ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qpza1, region A:2-58 [Jmol] [rasmolscript] [script source]     - Domain d1qpza2, region A:59-340 [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: [1qpz_A] [1qpz_M] [1qpz] SWISS-PROT database: [P0ACP7] Domain organization of [PURR_ECOLI] by SWISSPFAM Domain found in 1QPZ: [HTH_LACI ] by SMART

Other resources with information on 1QPZ

Community annotation for 1QPZ at PDBWiki (http://pdbwiki.org)

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