1SPQ	Isomerase	date	Mar 17, 2004
title	Understanding Protein Lids: Structural Analysis Of Active Hi Mutants In Triosephosphate Isomerase
authors	I.Kursula, M.Salin, J.Sun, B.V.Norledge, A.M.Haapalainen, N.S.Sam R.K.Wierenga
compound		source
Molecule: Triosephosphate Isomerase Chain: A, B Synonym: Tim Ec: 5.3.1.1 Engineered: Yes Mutation: Yes		Organism_scientific: Gallus Gallus Organism_common: Chicken Organism_taxid: 9031 Gene: Tpi1 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Df502 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pbsx1c
symmetry	Space Group: C 1 2 1	R_factor 0.160 R_Free 0.198
crystal cell	length a length b length c angle alpha angle beta angle gamma 80.706 57.334 106.154 90.00 92.89 90.00
method	X-Ray Diffraction	resolution	2.16 Å
ligand	PEG	enzyme	Isomerase E.C.5.3.1.1 BRENDA
related structures	by homologous chain: 1SW3, 1WYI
Gene Ontology	Chain Function Process Component A, B
Primary reference	Understanding protein lids: structural analysis of active hinge mutants in triosephosphate isomerase., Kursula I, Salin M, Sun J, Norledge BV, Haapalainen AM, Sampson NS, Wierenga RK, Protein Eng Des Sel 2004 Apr;17(4):375-382. Epub 2004 May 27. PMID:15166315

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (85 Kb) [Save to disk] Biological Unit Coordinates (1spq.pdb1.gz) 79 Kb LPC: Ligand-Protein Contacts for 1SPQ CSU: Contacts of Structural Units for 1SPQ Likely Quarternary Molecular Structure file(s) for 1SPQ Structure Factors (233 Kb) Retrieve 1SPQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SPQ from S2C, [Save to disk] Re-refined 1spq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SPQ 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 1SPQ

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 1SPQ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1spqa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1spqb_, region B [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: [1spq] [1spq_A] [1spq_B] SWISS-PROT database: [P00940] Domain organization of [TPIS_CHICK] by SWISSPFAM

Other resources with information on 1SPQ

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

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