Some interesting bibliographic references about chemical shift in proteins: Amino acid type assignment from chemical shift values: RESCUE2: 04JB47-30 PLATON: 03JB41-25 RESCUE: 99JB15-15 PROTYP: 93JB185-3 RefDB: A database of uniformly referenced protein chemical shifts ( 03JB173-25) that use three different programs: SHIFTX, SHIFTCOR, and UPDATE. Secondary structural effects on protein chemical shifts using residue-specific secondary structure (RSS) chemical shift shielding surfaces ( 04JB233-30 ). Random coil chemical shifts in acidic 8M urea ( 00JB43-18 ). Interpretation of chemical shifts in macromolecules ( 00COP197 ). Isotope effects on chemical shifts of proteins and peptides ( 00MRC1 ). Prediction of disulfide bond formation using 13C chemical shifts ( 00JB165-18 ). Sequence-dependent correction of random-coil chemical shifts ( 01JACS2970 ). Automated prediction of 15N, 13CA, 13CB and 13CO chemical shifts using a density functional database (SHIFTS program) ( 01JB321-21). Conformational dependence of CA and CB. Use of the program TALOS ( 98JB289) Sequential assignment using only CA chemical shift data ( 02JB263) Prediction of 15N chemical shift using PRSI (Preceding Residue Specific Individual). ( 04JB327)