There are at least four distinct but related alkaline phosphatases: intestinal , placental , placental-like , and liver/bone/kidney ( tissue non-specific ) . The first three are located together on chromosome 2 while the tissue non-specific form is located on chromosome 1. The product of this gene is a membrane bound glycosylated enzyme , also referred to as the heat stable form , that is expressed primarily in the placenta although it is closely related to the intestinal form of the enzyme as well as to the placental-like form. The coding sequence for this form of alkaline phosphatase is unique in that the 3' untranslated region contains multiple copies of an Alu family repeat. In addition , this gene is polymorphic and three common alleles ( type 1 , type 2 and type 3 ) for this form of alkaline phosphatase have been well characterized.

ALP;ALPP;Alkaline phosphatase;PALP;PLAP;PLAP-1;Placental

Human

PBS with 0.04% Proclin 300; 50% glycerol; pH 7.5; PBS with 0.04% Proclin 300; 1% protective protein; 50% glycerol; pH 7.5

-20℃

12个月