Through-hydrogen bond coupling constants in biomolecular complexes: Cross-hydrogen bond 1hJN,H and 2hJN,H coupling constants in a DNA-protein complex have been reported ( 00JB39). 3hJP,N and 2hJP,H coupling constants in N-H....O-P spin systems of protein-nucleotide complexes ( 00JACS5883, 00JACS9289 and 01JACS11079) 2hJN,N coupling constants in N-H....N spin systems of a peptide-RNA aptamer complex ( 00JACS11226)