Purity: > 90% by SDS - PAGE Format: Liquid. In 20mM Phosphate buffer saline (pH 8.0) containing 30% glycerol, 1mM DTT . MTHFSD contains 1 RRM (RNA recognition motif) domain. Recombinant human MTHFSD protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography techniques.