1I0L	Transferase	date	Jan 29, 2001
title	Analysis Of An Invariant Aspartic Acid In Hprts-Asparagine M
authors	B.Canyuk, P.J.Focia, A.E.Eakin
compound		source
Molecule: Hypoxanthine-Guanine Phosphoribosyltransferase Chain: A, B Ec: 2.4.2.8 Engineered: Yes Mutation: Yes		Organism_scientific: Trypanosoma Cruzi Organism_taxid: 5693 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 1 21 1	R_factor 0.210 R_Free 0.267
crystal cell	length a length b length c angle alpha angle beta angle gamma 39.570 103.500 52.150 90.00 93.94 90.00
method	X-Ray Diffraction	resolution	1.72 Å
ligand	7HP, MG, PRP	enzyme	Transferase E.C.2.4.2.8 BRENDA
related structures	by homologous chain: 1TC1, 1TC2
Gene Ontology	Chain Function Process Component A, B
Primary reference	The role for an invariant aspartic acid in hypoxanthine phosphoribosyltransferases is examined using saturation mutagenesis, functional analysis, and X-ray crystallography., Canyuk B, Focia PJ, Eakin AE, Biochemistry 2001 Mar 6;40(9):2754-65. PMID:11258886

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (69 Kb) [Save to disk] Biological Unit Coordinates (1i0l.pdb1.gz) 64 Kb LPC: Ligand-Protein Contacts for 1I0L CSU: Contacts of Structural Units for 1I0L Likely Quarternary Molecular Structure file(s) for 1I0L Structure Factors (277 Kb) Retrieve 1I0L in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1I0L from S2C, [Save to disk] Re-refined 1i0l structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1I0L in 3D

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Visual 3D analysis of 1I0L

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 1I0L, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1i0la_, region A [Jmol] [rasmolscript] [script source]     - Domain d1i0lb_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1i0l] [1i0l_B] [1i0l_A] SWISS-PROT database: [Q27796] Domain organization of [Q27796_TRYCR] by SWISSPFAM

Other resources with information on 1I0L

Community annotation for 1I0L at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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