1NH3	Isomerase Dna	date	Dec 18, 2002
title	Human Topoisomerase I Ara-C Complex
authors	J.E.Chrencik, A.B.Burgin, Y.Pommier, L.Stewart, M.R.Redinbo
compound		source
Molecule: 5'-D(Apapapapapgpapcpup(Ubb))-3' Chain: B Engineered: Yes		Synthetic: Yes
Molecule: 5'-D((Gng)Pgpapapapapapupupupupt)-3' Chain: C Engineered: Yes		Synthetic: Yes
Molecule: 5'-D(Apapapapaptpupupupupcp(Car) Papapgpupcpupupupupt)-3'; Chain: D Engineered: Yes		Synthetic: Yes
Molecule: Dna Topoisomerase I Chain: A Fragment: Core Subdomain, C-Terminal Domain Ec: 5.99.1.2 Engineered: 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_cell_line: Sf9 Expression_system_vector_type: Baculovirus
symmetry	Space Group: P 32	R_factor 0.235 R_Free 0.311
crystal cell	length a length b length c angle alpha angle beta angle gamma 72.970 72.970 186.290 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	3.10 Å
ligand	CAR, GNG, PTR, UBB	enzyme	Isomerase E.C.5.99.1.2 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Structural impact of the leukemia drug 1-beta-D-arabinofuranosylcytosine (Ara-C) on the covalent human topoisomerase I-DNA complex., Chrencik JE, Burgin AB, Pommier Y, Stewart L, Redinbo MR, J Biol Chem 2003 Apr 4;278(14):12461-6. Epub 2003 Jan 17. PMID:12533542

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (99 Kb) [Save to disk] Biological Unit Coordinates (1nh3.pdb1.gz) 91 Kb LPC: Ligand-Protein Contacts for 1NH3 CSU: Contacts of Structural Units for 1NH3 Likely Quarternary Molecular Structure file(s) for 1NH3 Structure Factors (299 Kb) Retrieve 1NH3 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NH3 from S2C, [Save to disk] Re-refined 1nh3 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NH3 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 1NH3

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1NH3, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1nh3a2, region A:203-430 [Jmol] [rasmolscript] [script source]     - Domain d1nh3a1, region A:431-626,A:719-765 [Jmol] [rasmolscript] [script source] Fold representative 1nh3 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1nh3_D] [1nh3] [1nh3_B] [1nh3_A] [1nh3_C] SWISS-PROT database: [P11387] Domain organization of [TOP1_HUMAN] by SWISSPFAM Domain found in 1NH3: [TOPEUc ] by SMART

Other resources with information on 1NH3

Community annotation for 1NH3 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Images from IMB Jena Image Library of Biological Macromolecules.

You may enter another PDB ID code

Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]

---

OCA© by Jaime Prilusky, 1996-2014 Bioinformatics Unit Weizmann Institute of Science

---