LALBA proteins are regulatory subunits of lactose synthase and play a key role in altering the substrate specificity of mammary galactosyltransferase. This modification allows galactosyltransferase to utilize glucose, promoting the synthesis of lactose - the main milk carbohydrate. LALBA Protein, Human (HEK293, His) is the recombinant human-derived LALBA protein, expressed by HEK293 , with C-6*His labeled tag. The total length of LALBA Protein, Human (HEK293, His) is 123 a.a., with molecular weight of 14 kDa.