1SEJ	Transferase, Oxidoreductase	date	Feb 17, 2004
title	Crystal Structure Of Dihydrofolate Reductase-Thymidylate Syn Cryptosporidium Hominis Bound To 1843u89nadphdump
authors	A.C.Anderson
compound		source
Molecule: Bifunctional Dihydrofolate Reductase-Thymidylate Chain: A, B, C, D, E Ec: 2.1.1.45, 1.5.1.3 Engineered: Yes		Organism_scientific: Cryptosporidium Hominis Organism_taxid: 237895 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Pa414
symmetry	Space Group: C 1 2 1	R_factor 0.220 R_Free 0.237
crystal cell	length a length b length c angle alpha angle beta angle gamma 214.900 116.300 219.700 90.00 95.23 90.00
method	X-Ray Diffraction	resolution	2.87 Å
ligand	F89, NDP, UMP	enzyme	Transferase E.C.2.1.1.45 BRENDA
related structures	by homologous chain: 1QZF
Gene Ontology	Chain Function Process Component A, D, C, E, B
Primary reference	Two crystal structures of dihydrofolate reductase-thymidylate synthase from Cryptosporidium hominis reveal protein-ligand interactions including a structural basis for observed antifolate resistance., Anderson AC, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2005 Mar 1;61(Pt, 3):258-62. Epub 2005 Feb 8. PMID:16511011

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (445 Kb) [Save to disk] Biological Unit Coordinates (1sej.pdb1.gz) 178 Kb Biological Unit Coordinates (1sej.pdb2.gz) 179 Kb Biological Unit Coordinates (1sej.pdb3.gz) 177 Kb LPC: Ligand-Protein Contacts for 1SEJ CSU: Contacts of Structural Units for 1SEJ Likely Quarternary Molecular Structure file(s) for 1SEJ Structure Factors (1074 Kb) Retrieve 1SEJ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SEJ from S2C, [Save to disk] Re-refined 1sej structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SEJ 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 1SEJ

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 1SEJ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1seja2, region A:233-521 [Jmol] [rasmolscript] [script source]     - Domain d1seja1, region A:3-180 [Jmol] [rasmolscript] [script source]     - Domain d1sejb2, region B:233-521 [Jmol] [rasmolscript] [script source]     - Domain d1sejb1, region B:3-180 [Jmol] [rasmolscript] [script source]     - Domain d1sejc2, region C:233-521 [Jmol] [rasmolscript] [script source]     - Domain d1sejc1, region C:3-180 [Jmol] [rasmolscript] [script source]     - Domain d1sejd2, region D:233-521 [Jmol] [rasmolscript] [script source]     - Domain d1sejd1, region D:3-180 [Jmol] [rasmolscript] [script source]     - Domain d1seje2, region E:233-521 [Jmol] [rasmolscript] [script source]     - Domain d1seje1, region E:3-180 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1sej_D] [1sej_E] [1sej_A] [1sej] [1sej_B] [1sej_C] SWISS-PROT database: [Q27552] Domain organization of [Q27552_CRYPV] by SWISSPFAM

Other resources with information on 1SEJ

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

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