1R49	Isomerase Dna	date	Oct 03, 2003
title	Human Topoisomerase I (Topo70) Double Mutant K532ry723f
authors	H.Interthal, P.M.Quigley, W.G.Hol, J.J.Champoux
compound		source
Molecule: 5'-D(Apapapapapgpapcptptpapgpapapa Tptptpt)-3'; Chain: B Engineered: Yes		Synthetic: Yes
Molecule: 5'-D(Papapapapaptptptptptpcptpapap Ptptptpt)-3'; Chain: C Engineered: Yes		Synthetic: Yes
Molecule: Dna Topoisomerase I Chain: A Fragment: Topo70 Ec: 5.99.1.2 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Top1 Expression_system: Spodoptera Frugiperda Expression_system_common: Fall Armyworm Expression_system_taxid: 7108 Expression_system_vector_type: Baculovirus
symmetry	Space Group: P 1 21 1	R_factor 0.277 R_Free 0.339
crystal cell	length a length b length c angle alpha angle beta angle gamma 56.944 118.638 71.651 90.00 98.33 90.00
method	X-Ray Diffraction	resolution	3.13 Å
ligand		enzyme	Isomerase E.C.5.99.1.2 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	The role of lysine 532 in the catalytic mechanism of human topoisomerase I., Interthal H, Quigley PM, Hol WG, Champoux JJ, J Biol Chem 2004 Jan 23;279(4):2984-92. Epub 2003 Oct 31. PMID:14594810

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (116 Kb) [Save to disk] Biological Unit Coordinates (1r49.pdb1.gz) 109 Kb CSU: Contacts of Structural Units for 1R49 Likely Quarternary Molecular Structure file(s) for 1R49 Structure Factors (96 Kb) Retrieve 1R49 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1R49 from S2C, [Save to disk] Re-refined 1r49 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1R49 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 1R49

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 1R49, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1r49a3, region A:202-430 [Jmol] [rasmolscript] [script source]     - Domain d1r49a2, region A:431-633,A:719-765 [Jmol] [rasmolscript] [script source]     - Domain d1r49a1, region A:644-713 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1r49_B] [1r49] [1r49_A] [1r49_C] SWISS-PROT database: [P11387] Domain organization of [TOP1_HUMAN] by SWISSPFAM Domain found in 1R49: [TOPEUc ] by SMART

Other resources with information on 1R49

Community annotation for 1R49 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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