@article{repository11090,
       publisher = {Indonesian Society for Biochemistry and Molecular Biology (PBBMI)},
          number = {2},
           title = {HUMAN SERUM FOLATE CAN BE MEASURED USING FOLATE BINDING PROTEIN LINKED TO ENZYME-LABELED PROTEIN LIGAND BINDING ASSAY (ELPLBA) AS WELL AS ELISA},
          volume = {1},
           pages = {59--67},
           month = {December},
            year = {2018},
         journal = {Acta Biochimica Indonesiana},
            issn = {2654-6108},
          author = {Muhamad Arif Budiman, MAB},
             url = {http://pbbmi.org/jurnal/index.php/ActaBioIna/article/view/17},
        abstract = {Background: Folate is an important substance used for purine and pyrimidine nucleotide synthesis. One measurement of folate that already establishes is using ELISA (Enzymelinked immunosorbent assay) method. Folate binding protein is a protein that can bind folate,therefore it considered can be used as a tool that can replace antibody dependent ELISA method. Objectives: The aim of this research was to create a method for folate measurement in serum called Enzyme-labeled protein ligand binding assay (ELPLBA) by replacing antibody as used in ELISA method with folate binding protein (FBP) that purified from the whey of milk. Methods: The method is tested using 20 serum samples and compared to ELISA. Folate binding protein was purified from bovine's milk using ammonium sulfate up to 90\% saturated, DEAE-cellulose anion exchange chromatography and affinity chromatography. SDS-PAGE and western blot were used to establish the protein band of FBP that has molecular weight of {\texttt{\char126}}25-35 kDa. ELPLBA was arranged with stationary phase using aminohexyl-agarose, and folic acid linked on it using carbodiimide. Results: The result show there was no significant difference of folate concentration between ELPLBA (14.804 {$\pm$} 2.795) and ELISA method (13.859 {$\pm$} 3.638), p = 0.363. Conclusion: ELPLBA method show similarity for determination of folate in serum which was the same as standard folate measurement (ELISA).}
}