2ISI	Lyase	date	Oct 17, 2006
title	Crystal Structure Of Ape1 From Homo Sapiens In A New Crystal Complexed With A Ligand
authors	R.Agarwal, M.D.Naidu
compound		source
Molecule: Dna-(Apurinic Or Apyrimidinic Site) Lyase Chain: A, B, C Synonym: Ap Endonuclease 1, Apex Nuclease, Apen, Ref-1 Prot Ec: 4.2.99.18 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet15b
symmetry	Space Group: C 1 2 1	R_factor 0.228 R_Free 0.284
crystal cell	length a length b length c angle alpha angle beta angle gamma 167.347 92.392 94.006 90.00 121.38 90.00
method	X-Ray Diffraction	resolution	2.76 Å
ligand	MG, PO4	enzyme	Lyase E.C.4.2.99.18 BRENDA
Gene Ontology	Chain Function Process Component A, C, B transcription corepressor ac... nuclease activity endonuclease activity endoribonuclease activity RNA-DNA hybrid ribonuclease ... exonuclease activity phosphodiesterase I activity... double-stranded DNA 3'-5' ex... 3'-5' exonuclease activity oxidoreductase activity

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (137 Kb) [Save to disk] Biological Unit Coordinates (2isi.pdb1.gz) 46 Kb Biological Unit Coordinates (2isi.pdb2.gz) 45 Kb Biological Unit Coordinates (2isi.pdb3.gz) 45 Kb LPC: Ligand-Protein Contacts for 2ISI CSU: Contacts of Structural Units for 2ISI Likely Quarternary Molecular Structure file(s) for 2ISI Structure Factors (201 Kb) Retrieve 2ISI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2ISI from S2C, [Save to disk] Re-refined 2isi structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2ISI 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 2ISI

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 2ISI, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2isi_B] [2isi_A] [2isi_C] [2isi] SWISS-PROT database: [P27695] Domain organization of [APEX1_HUMAN] by SWISSPFAM

Other resources with information on 2ISI

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

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