1P20	Surprising Roles of Electrostatic Interactions in DNA-Ligand Complexes	date
authors	Howerton, S.B., Nagpal, A., Williams, L.D.
compound		source
symmetry		R_factor R_Free 0.215
crystal cell	length a length b length c angle alpha angle beta angle gamma
method	X-Ray Diffraction	resolution	1.34
ligand	DM2, TL	enzyme
Primary reference	Surprising roles of electrostatic interactions in DNA-ligand complexes., Howerton SB, Nagpal A, Williams LD, Biopolymers 2003 May;69(1):87-99. PMID:12717724

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (9 Kb) [Save to disk] Biological Unit Coordinates (1p20.pdb1.gz) 8 Kb LPC: Ligand-Protein Contacts for 1P20 CSU: Contacts of Structural Units for 1P20 Likely Quarternary Molecular Structure file(s) for 1P20 Retrieve 1P20 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1P20 from S2C, [Save to disk]

View 1P20 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 1P20

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1P20, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1p20_A] [1p20] SWISS-PROT database: Domain organization of by SWISSPFAM

Other resources with information on 1P20

Community annotation for 1P20 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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Images from IMB Jena Image Library of Biological Macromolecules.

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