2PTR	Lyase	date	May 08, 2007
title	Crystal Structure Of Escherichia Coli Adenylosuccinate Lyase H171a With Bound Adenylosuccinate Substrate
authors	M.Tsai, P.L.Howell
compound		source
Molecule: Adenylosuccinate Lyase Chain: A, B Synonym: Adenylosuccinate, Asl Ec: 4.3.2.2 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Purb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21c+ Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-28a
symmetry	Space Group: P 21 21 2	R_factor 0.183 R_Free 0.216
crystal cell	length a length b length c angle alpha angle beta angle gamma 98.400 143.190 69.450 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.85 Å
ligand	2SA	enzyme	Lyase E.C.4.3.2.2 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Substrate and Product Complexes of Escherichia coli Adenylosuccinate Lyase Provide New Insights into the Enzymatic Mechanism., Tsai M, Koo J, Yip P, Colman RF, Segall ML, Howell PL, J Mol Biol. 2007 Jul 13;370(3):541-554. Epub 2007 May 4. PMID:17531264

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (160 Kb) [Save to disk] Biological Unit Coordinates (2ptr.pdb1.gz) 305 Kb LPC: Ligand-Protein Contacts for 2PTR CSU: Contacts of Structural Units for 2PTR Likely Quarternary Molecular Structure file(s) for 2PTR Structure Factors (681 Kb) Retrieve 2PTR in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2PTR from S2C, [Save to disk] Re-refined 2ptr structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2PTR 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 2PTR

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 2PTR, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ptr_A] [2ptr] [2ptr_B] SWISS-PROT database: [P0AB89] Domain organization of [PUR8_ECOLI] by SWISSPFAM

Other resources with information on 2PTR

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

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