1EXN	Nuclease	date	Jan 17, 1997
title	T5 5'-Exonuclease
authors	T.A.Ceska, J.R.Sayers, G.Stier, D.Suck
compound		source
Molecule: 5'-Exonuclease Chain: A, B Synonym: 5'-Nuclease; 5'-3' Exonuclease Ec: 3.1.11.3 Engineered: Yes Mutation: Yes		Organism_scientific: Enterobacteria Phage T5 Organism_taxid: 10726 Gene: D15 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Le392 Expression_system_plasmid: Pdoc55 Expression_system_gene: D15
symmetry	Space Group: P 43	R_factor 0.227 R_Free 0.339
crystal cell	length a length b length c angle alpha angle beta angle gamma 77.760 77.760 134.690 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	MSE	enzyme	Hydrolase E.C.3.1.11.3 BRENDA
related structures	by homologous chain: 1UT8, 1XO1
Gene Ontology	Chain Function Process Component A, B nuclease activity endonuclease activity exonuclease activity 5'-3' exonuclease activity 5'-3' exodeoxyribonuclease a...
Primary reference	A helical arch allowing single-stranded DNA to thread through T5 5'-exonuclease., Ceska TA, Sayers JR, Stier G, Suck D, Nature 1996 Jul 4;382(6586):90-3. PMID:8657312

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (99 Kb) [Save to disk] Biological Unit Coordinates (1exn.pdb1.gz) 48 Kb Biological Unit Coordinates (1exn.pdb2.gz) 48 Kb LPC: Ligand-Protein Contacts for 1EXN CSU: Contacts of Structural Units for 1EXN Likely Quarternary Molecular Structure file(s) for 1EXN Retrieve 1EXN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1EXN from S2C, [Save to disk]

View 1EXN 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 1EXN

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1EXN, from MSDmotif at EBI Genome occurence of 1EXN's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1exna1, region A:186-290 [Jmol] [rasmolscript] [script source]     - Domain d1exna2, region A:20-185 [Jmol] [rasmolscript] [script source]     - Domain d1exnb1, region B:186-291 [Jmol] [rasmolscript] [script source]     - Domain d1exnb2, region B:20-185 [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: [1exn] [1exn_B] [1exn_A] SWISS-PROT database: [P06229] Domain organization of [EXO5_BPT5] by SWISSPFAM Domains found in 1EXN: [53EXOc] [HhH2 ] by SMART

Other resources with information on 1EXN

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

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