Backbone (15)N relaxation parameters and (15)N-(1)H(N) residual dipolar couplings (RDCs) have been measured for a variant of human alpha-lactalbumin (alpha-LA) in 4, 6, 8 and 10 M urea. In the alpha-LA variant, the eight cysteine residues in the protein have been replaced by alanines (all-Ala alpha-LA). This protein is a partially folded molten globule at pH 2 and has been shown previously to u...