Bifunctional 3'-phosphoadenosine 5'-phosphosulfate synthetase 2 is an enzyme that in humans is encoded by the PAPSS2gene.
Sulfation is a common modification of endogenous (lipids, proteins, and carbohydrates) and exogenous (xenobiotics and drugs) compounds. In mammals, the sulfate source is 3'-phosphoadenosine 5'-phosphosulfate (PAPS), created from ATP and inorganic sulfate. Two different tissue isoforms encoded by different genes synthesize PAPS. This gene encodes one of the two PAPS synthetases. Defects in this gene cause the Pakistani type of spondyloepimetaphyseal dysplasia. Two alternatively spliced transcript variants that encode different isoforms have been described for this gene.
^ul Haque MF, King LM, Krakow D, Cantor RM, Rusiniak ME, Swank RT, Superti-Furga A, Haque S, Abbas H, Ahmad W, Ahmad M, Cohn DH (Oct 1998). "Mutations in orthologous genes in human spondyloepimetaphyseal dysplasia and the brachymorphic mouse". Nat Genet. 20 (2): 157–62. doi:10.1038/2458. PMID9771708.
Besset S, Vincourt JB, Amalric F, Girard JP (2000). "Nuclear localization of PAPS synthetase 1: a sulfate activation pathway in the nucleus of eukaryotic cells". FASEB J. 14 (2): 345–54. PMID10657990.
Kurima K, Singh B, Schwartz NB (1999). "Genomic organization of the mouse and human genes encoding the ATP sulfurylase/adenosine 5'-phosphosulfate kinase isoform SK2". J. Biol. Chem. 274 (47): 33306–12. doi:10.1074/jbc.274.47.33306. PMID10559207.