View source for HABAS

''  Grid search and stereospecific assignment algorithm   ''


The program HABAS determines torsion angle constraints for the torsion angles PHI, PSI and CHI1 in proteins and stereospecific assignments for the beta-methylene protons by a systemtic grid search analysis of the vicinal scalar couplings and the intraresidual and sequential proton-proton nuclear Overhauser effects in molecular fragments defined by the PHI, PSI and CHI1 torsion angles.  
 
== Availability ==
	
*HABAS is no longer available or supported.
Its functionality has been incoporated into the module FOUND of the program packages [[DYANA]] and [http://www.cyana.org/wiki CYANA].

== References ==

* Güntert, P., Braun, W., Billeter, M. & Wüthrich, K. Automated stereospecific 1H NMR assignments and their impact on the precision of protein structure determinations in solution. J. Amer. Chem. Soc. 111, 3997-4004 (1989).  
:Any reports or publications of results obtained with HABAS must cite this paper.