2PUB	Transcription Dna	date	Oct 04, 1997
title	Crystal Structure Of The Laci Family Member, Purr, Bound To Groove Binding By Alpha Helices
authors	R.G.Schumacher, K.Y.Choi, H.Zalkin, M.A.Brennan
compound		source
Molecule: Dna (5'- D(Tpapcpgpcpapapapcpgptptptpgpcpgpt )-3'); Chain: B Engineered: Yes		Synthetic: Yes Organism_scientific: Synthetic Construct Organism_taxid: 32630
Molecule: Purine Repressor Chain: A Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Purr Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector: Pet24a Expression_system_plasmid: Pdna100
symmetry	Space Group: C 2 2 21	R_factor 0.171 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 175.810 94.870 81.750 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.70 Å
ligand	ADE	enzyme
related structures	by homologous chain: 1PNR, 1VPW
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of LacI member, PurR, bound to DNA: minor groove binding by alpha helices., Schumacher MA, Choi KY, Zalkin H, Brennan RG, Science. 1994 Nov 4;266(5186):763-70. PMID:7973627

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (66 Kb) [Save to disk] Biological Unit Coordinates (2pub.pdb1.gz) 121 Kb LPC: Ligand-Protein Contacts for 2PUB CSU: Contacts of Structural Units for 2PUB Likely Quarternary Molecular Structure file(s) for 2PUB Retrieve 2PUB in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2PUB from S2C, [Save to disk]

View 2PUB 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 2PUB

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2PUB, from MSDmotif at EBI Genome occurence of 2PUB's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2puba1, region A:3-58 [Jmol] [rasmolscript] [script source]     - Domain d2puba2, 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: [2pub_B] [2pub_A] [2pub] SWISS-PROT database: [P0ACP7] Domain organization of [PURR_ECOLI] by SWISSPFAM Domain found in 2PUB: [HTH_LACI ] by SMART

Other resources with information on 2PUB

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

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