1P33	Oxidoreductase	date	Apr 16, 2003
title	Pteridine Reductase From Leishmania Tarentolae Complex With Mtx
authors	H.Zhao, T.Bray, M.Ouellette, M.Zhao, R.A.Ferre, D.Matthews, J.M.Wh K.I.Varughese
compound		source
Molecule: Pteridine Reductase 1 Chain: A, B, C, D Fragment: Pteridine Reductase Synonym: H Region Methotrexate Resistance Protein Ec: 1.1.1.253 Engineered: Yes		Organism_scientific: Leishmania Tarentolae Organism_taxid: 5689 Gene: Ptr1 Or Ltdh Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Pet16b Expression_system_plasmid: Pmalc-2
symmetry	Space Group: P 21 21 21	R_factor 0.213 R_Free 0.251
crystal cell	length a length b length c angle alpha angle beta angle gamma 91.301 96.103 195.545 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.86 Å
ligand	MTX, NDP	enzyme	Oxidoreductase E.C.1.1.1.253 BRENDA
related structures	by homologous chain: 1W0C
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	Structure of pteridine reductase (PTR1) from Leishmania tarentolae., Zhao H, Bray T, Ouellette M, Zhao M, Ferre RA, Matthews D, Whiteley JM, Varughese KI, Acta Crystallogr D Biol Crystallogr 2003 Sep;59(Pt 9):1539-44. PMID:12925782

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (177 Kb) [Save to disk] Biological Unit Coordinates (1p33.pdb1.gz) 169 Kb LPC: Ligand-Protein Contacts for 1P33 CSU: Contacts of Structural Units for 1P33 Likely Quarternary Molecular Structure file(s) for 1P33 Structure Factors (346 Kb) Retrieve 1P33 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1P33 from S2C, [Save to disk] Re-refined 1p33 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1P33 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 1P33

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 1P33, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1p33a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1p33b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1p33c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1p33d_, region D [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: [1p33_B] [1p33] [1p33_A] [1p33_D] [1p33_C] SWISS-PROT database: [P42556] Domain organization of [PTR1_LEITA] by SWISSPFAM

Other resources with information on 1P33

Community annotation for 1P33 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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