Distributor Sk Iron Ore Magnetic Separators Nakayama

nuclear magnetic resonance data of over-expressed ubiquitin show that by using [1-{sup 13}c]-gluconate as the only carbon source, and {sup 15}n-enriched ammonium chloride, sparse isotopic enrichment in the form of a spin-pair carbonyl-amide backbone enrichment is obtained.The specific amino acid labeling pattern is analyzed and is shown to be.