1ZN9	Transferase	date	May 11, 2005
title	Human Adenine Phosphoribosyltransferase In Apo And Amp Compl
authors	J.Iulek, M.Silva, C.H.T.P.Tomich, O.H.Thiemann
compound		source
Molecule: Adenine Phosphoribosyltransferase Chain: A, B Synonym: Aprt Ec: 2.4.2.7 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Aprt Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet29a
symmetry	Space Group: P 21 21 21	R_factor 0.151 R_Free 0.225
crystal cell	length a length b length c angle alpha angle beta angle gamma 47.511 49.252 140.105 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.05 Å
ligand	AMP	enzyme	Transferase E.C.2.4.2.7 BRENDA
Gene Ontology	Chain Function Process Component A, B adenine binding adenine phosphoribosyltransf... AMP binding transferase activity transferase activity, transf... purine nucleobase metabolic ... purine ribonucleoside salvag... adenine salvage lactation grooming behavior nucleoside metabolic process... cellular response to insulin... purine-containing compound s... AMP salvage small molecule metabolic pro... nucleobase-containing small ... nucleus nucleolus cytoplasm cytosol
Primary reference	Structural Complexes of Human Adenine Phosphoribosyltransferase Reveal Novel Features of the APRT Catalytic Mechanism., Silva CH, Silva M, Iulek J, Thiemann OH, J Biomol Struct Dyn. 2008 Jun;25(6):589-98. PMID:18399692

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (68 Kb) [Save to disk] Biological Unit Coordinates (1zn9.pdb1.gz) 63 Kb LPC: Ligand-Protein Contacts for 1ZN9 CSU: Contacts of Structural Units for 1ZN9 Likely Quarternary Molecular Structure file(s) for 1ZN9 Structure Factors (156 Kb) Retrieve 1ZN9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1ZN9 from S2C, [Save to disk] Re-refined 1zn9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1ZN9 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 1ZN9

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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 1ZN9, from MSDmotif at EBI Fold representative 1zn9 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1zn9_A] [1zn9_B] SWISS-PROT database: [P07741] Domain organization of [APT_HUMAN] by SWISSPFAM Alignments of the sequence of 1ZN9 with the sequences similar proteins can be viewed for 1ZN9's classification [APT_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [APT_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1ZN9

Community annotation for 1ZN9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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