title: An NMR assignment module implemented in the Gifa NMR processing program.
abstract: BACKGROUND
  Peptide and protein structures are determined daily using NMR spectroscopy. Assignment of the NMR spectra is an important step within the procedure and is usually the limiting one. Computer-aided assignment tools should be user friendly with open architecture to communicate with other programs involved in the structure determination.
  
  
  RESULTS
  Here we present an interactive NMR assignment module which provides numerous graphic tools for the user. The module is composed of a database management system-handling peaks, spins and spin-systems. The assignment information is maintained as a set of interrelated associative arrays, which serve as generic high-level data structures. The module is developed in the macro language embedded in the Gifa NMR processing program (Pons et al. , J. Biomol. NMR, 8 , 445-452, 1996). This provides the user with a consistent interface, a set of sophisticated tools, and an easily extendible and customizable environment.
  
  
  BACKGROUND
  The program is available on request from the authors. The Gifa package can be accessed at: ((http://www.cbs. univ-montp1.fr/GIFA)) CONTACT: Marc-Andre.Delsuc@cbs.univ-montp1.fr
authors.affiliation: Centre de Biochimie Structurale CNRS-UMR9955 INSERM-U414, Faculté de Pharmacie, 15 avenue Charles Flahault, 34060 Montpellier, France.
authors.forename: T E
authors.initials: TE
authors.lastname: Malliavin
authors.forename: J L
authors.initials: JL
authors.lastname: Pons
authors.forename: M A
authors.initials: MA
authors.lastname: Delsuc
mesh_terms: D003628:Database Management Systems; D019906:Nuclear Magnetic Resonance, Biomolecular; D012984:Software