1ECP	Pentosyltransferase	date	Jul 13, 1995
title	Purine Nucleoside Phosphorylase
authors	C.Mao, S.E.Ealick
compound		source
Molecule: Purine Nucleoside Phosphorylase Chain: A, B, C, D, E, F Ec: 2.4.2.1 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 83333 Strain: K12 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bau-1 Expression_system_plasmid: Pbr322-Deo Expression_system_gene: Deo Operon
symmetry	Space Group: P 1 21 1	R_factor 0.200 R_Free 0.290
crystal cell	length a length b length c angle alpha angle beta angle gamma 89.500 110.600 74.600 90.00 111.70 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand		enzyme	Transferase E.C.2.4.2.1 BRENDA
related structures	by homologous chain: 1K9S, 1PW7
Gene Ontology	Chain Function Process Component F, A, D, C, E, B
Primary reference	The crystal structure of Escherichia coli purine nucleoside phosphorylase: a comparison with the human enzyme reveals a conserved topology., Mao C, Cook WJ, Zhou M, Koszalka GW, Krenitsky TA, Ealick SE, Structure 1997 Oct 15;5(10):1373-83. PMID:9351810

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (221 Kb) [Save to disk] Biological Unit Coordinates (1ecp.pdb1.gz) 217 Kb CSU: Contacts of Structural Units for 1ECP Likely Quarternary Molecular Structure file(s) for 1ECP Retrieve 1ECP in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1ECP from S2C, [Save to disk]

View 1ECP 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 1ECP

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1ECP, from MSDmotif at EBI Genome occurence of 1ECP's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ecpa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1ecpb_, region B [Jmol] [rasmolscript] [script source]     - Domain d1ecpc_, region C [Jmol] [rasmolscript] [script source]     - Domain d1ecpd_, region D [Jmol] [rasmolscript] [script source]     - Domain d1ecpe_, region E [Jmol] [rasmolscript] [script source]     - Domain d1ecpf_, region F [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: [1ecp_A] [1ecp] [1ecp_C] [1ecp_E] [1ecp_F] [1ecp_B] [1ecp_D] SWISS-PROT database: [P0ABP8] Domain organization of [DEOD_ECOLI] by SWISSPFAM

Other resources with information on 1ECP

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

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