1S20	Oxidoreductase	date	Jan 07, 2004
title	A Novel Nad Binding Protein Revealed By The Crystal Structur Coli 2,3-Diketogulonate Reductase (Yiak) Northeast Structur Genomics Consortium Target Er82
authors	F.Forouhar, I.Lee, J.Benach, K.Kulkarni, R.Xiao, T.B.Acton, G.T.Mo L.Tong, Northeast Structural Genomics Consortium (Nesg)
compound		source
Molecule: Hypothetical Oxidoreductase Yiak Chain: A, B, C, D, E, F, G, H Ec: 1.1.1.- Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Gene: Yiak, B3575 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)+Magic Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet21
symmetry	Space Group: P 1	R_factor 0.191 R_Free 0.250
crystal cell	length a length b length c angle alpha angle beta angle gamma 75.524 81.275 113.215 79.55 77.22 82.01
method	X-Ray Diffraction	resolution	2.20 Å
ligand	MSE, NAD, TLA	enzyme	Oxidoreductase E.C.1.1.1 BRENDA
related structures	by homologous chain: 1NXU
Gene Ontology	Chain Function Process Component F, A, E, B, H, C, D, G
Primary reference	A Novel NAD-binding Protein Revealed by the Crystal Structure of 2,3-Diketo-L-gulonate Reductase (YiaK)., Forouhar F, Lee I, Benach J, Kulkarni K, Xiao R, Acton TB, Montelione GT, Tong L, J Biol Chem 2004 Mar 26;279(13):13148-55. Epub 2004 Jan 12. PMID:14718529

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (455 Kb) [Save to disk] Biological Unit Coordinates (1s20.pdb1.gz) 116 Kb Biological Unit Coordinates (1s20.pdb2.gz) 114 Kb Biological Unit Coordinates (1s20.pdb3.gz) 116 Kb Biological Unit Coordinates (1s20.pdb4.gz) 117 Kb LPC: Ligand-Protein Contacts for 1S20 CSU: Contacts of Structural Units for 1S20 Likely Quarternary Molecular Structure file(s) for 1S20 Retrieve 1S20 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1S20 from S2C, [Save to disk]

View 1S20 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 1S20

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1S20, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1s20a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1s20b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1s20c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1s20d_, region D [Jmol] [rasmolscript] [script source]     - Domain d1s20e_, region E [Jmol] [rasmolscript] [script source]     - Domain d1s20f_, region F [Jmol] [rasmolscript] [script source]     - Domain d1s20g_, region G [Jmol] [rasmolscript] [script source]     - Domain d1s20h_, region H [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1s20_F] [1s20_H] [1s20_D] [1s20_B] [1s20_C] [1s20] [1s20_A] [1s20_E] [1s20_G] SWISS-PROT database: [P37672] Domain organization of [DLGD_ECOLI] by SWISSPFAM

Other resources with information on 1S20

Community annotation for 1S20 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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