1NSX	Isomerase	date	Jan 28, 2003
title	Crystal Structure Of Galactose Mutarotase From Lactococcus L Mutant H170n Complexed With Galactose
authors	H.M.Holden, J.B.Thoden
compound		source
Molecule: Galactose Mutarotase Chain: A, B Synonym: Aldose 1-Epimerase Ec: 5.1.3.3 Engineered: Yes Mutation: Yes		Organism_scientific: Lactococcus Lactis Organism_taxid: 1358 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Rosetta Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet28
symmetry	Space Group: P 21 21 21	R_factor 0.166 R_Free 0.217
crystal cell	length a length b length c angle alpha angle beta angle gamma 44.900 76.400 211.400 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.75 Å
ligand	GAL, NA	enzyme	Isomerase E.C.5.1.3.3 BRENDA
related structures	by homologous chain: 1MMU, 1NSZ
Gene Ontology	Chain Function Process Component A, B
Primary reference	The catalytic mechanism of galactose mutarotase., Thoden JB, Kim J, Raushel FM, Holden HM, Protein Sci 2003 May;12(5):1051-9. PMID:12717027

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (121 Kb) [Save to disk] Biological Unit Coordinates (1nsx.pdb1.gz) 116 Kb LPC: Ligand-Protein Contacts for 1NSX CSU: Contacts of Structural Units for 1NSX Likely Quarternary Molecular Structure file(s) for 1NSX Structure Factors (677 Kb) Retrieve 1NSX in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NSX from S2C, [Save to disk] Re-refined 1nsx structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NSX 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 1NSX

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 1NSX, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1nsxa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1nsxb_, region B [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1nsx] [1nsx_A] [1nsx_B] SWISS-PROT database: [Q9ZB17] Domain organization of [Q9ZB17_9LACT] by SWISSPFAM

Other resources with information on 1NSX

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

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