1A2T	Nuclease	date	Jan 11, 1998
title	Staphylococcal Nuclease, B-Mercaptoethanol Disulfide To V23c
authors	R.Wynn, P.C.Harkins, F.M.Richards, R.O.Fox
compound		source
Molecule: Staphylococcal Nuclease Chain: A Ec: 3.1.31.1 Engineered: Yes Mutation: Yes Other_details: Variant Formed By Chemical Modification Of S Cysteine Residue		Organism_scientific: Staphylococcus Aureus Organism_taxid: 1280 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Ar120 Expression_system_vector: Pas1
symmetry	Space Group: P 41	R_factor 0.169 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 48.200 48.200 63.000 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.96 Å
ligand	CA, CME, THP	enzyme	Hydrolase E.C.3.1.31.1 BRENDA
related structures	by homologous chain: 1SNQ, 2SNM
Gene Ontology	Chain Function Process Component A
Primary reference	Mobile unnatural amino acid side chains in the core of staphylococcal nuclease., Wynn R, Harkins PC, Richards FM, Fox RO, Protein Sci 1996 Jun;5(6):1026-31. PMID:8762134

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (34 Kb) [Save to disk] Biological Unit Coordinates (1a2t.pdb1.gz) 30 Kb LPC: Ligand-Protein Contacts for 1A2T CSU: Contacts of Structural Units for 1A2T Likely Quarternary Molecular Structure file(s) for 1A2T Retrieve 1A2T in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A2T from S2C, [Save to disk]

View 1A2T 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 1A2T

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1A2T, from MSDmotif at EBI Genome occurence of 1A2T's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a2t__, region [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: [1a2t_A] [1a2t] SWISS-PROT database: [P00644] Domain organization of [NUC_STAAU] by SWISSPFAM Domain found in 1A2T: [SNc ] by SMART

Other resources with information on 1A2T

Community annotation for 1A2T at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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