Used in plant biology research to quantify levels of S-adenosylmethionine synthase (SAMs), an enzyme critical in the biosynthesis of S-adenosylmethionine (SAM), a major methyl donor involved in numerous metabolic pathways. The ELISA kit enables precise measurement of SAMs protein concentration in plant tissue extracts, supporting studies on plant growth, development, and stress responses. It is particularly useful in investigating how environmental stresses such as salinity, drought, or pathogen attack affect SAMs expression and one-carbon metabolism. Researchers also use the kit to evaluate transgenic plants engineered for altered methylation capacity or improved stress tolerance. The assay is valued for its sensitivity, specificity, and ability to process multiple samples rapidly, making it ideal for screening and physiological studies in agriculture and molecular plant science.