1AVQ	Deoxyribonuclease	date	Sep 18, 1997
title	Toroidal Structure Of Lambda Exonuclease Determined At 2.4 A
authors	R.A.Kovall, B.W.Matthews
compound		source
Molecule: Lambda Exonuclease Chain: A, B, C Synonym: Red Alpha Ec: 3.1.11.3 Engineered: Yes Mutation: Yes		Organism_scientific: Enterobacteria Phage Lambda Organism_taxid: 10710 Cell_line: Bl21 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 (De3) Plyss Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-28(A+)
symmetry	Space Group: P 41 21 2	R_factor 0.198 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 156.700 156.700 131.700 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	ACT, PO4	enzyme	Hydrolase E.C.3.1.11.3 BRENDA
Gene Ontology	Chain Function Process Component A, C, B nuclease activity exonuclease activity
Primary reference	Toroidal structure of lambda-exonuclease., Kovall R, Matthews BW, Science 1997 Sep 19;277(5333):1824-7. PMID:9295273

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (124 Kb) [Save to disk] Biological Unit Coordinates (1avq.pdb1.gz) 118 Kb LPC: Ligand-Protein Contacts for 1AVQ CSU: Contacts of Structural Units for 1AVQ Likely Quarternary Molecular Structure file(s) for 1AVQ Structure Factors (493 Kb) Retrieve 1AVQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1AVQ from S2C, [Save to disk] Re-refined 1avq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1AVQ 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 1AVQ

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 1AVQ, from MSDmotif at EBI Genome occurence of 1AVQ's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1avqa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1avqb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1avqc_, region C [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: [1avq_B] [1avq_A] [1avq] [1avq_C] SWISS-PROT database: [P03697] Domain organization of [EXO_LAMBD] by SWISSPFAM

Other resources with information on 1AVQ

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

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