title: Genomic structure of the mouse PP4 gene: a developmentally regulated protein phosphatase.
abstract: Protein phosphatases play important roles in the control of various cellular processes. Here, we report the cloning and characterization of the murine cDNA and genomic DNA encoding the serine/threonine protein phosphatase 4 (PP4), also called PPX. While the nucleotide sequences of murine and human PP4 are distinct, their amino acid sequences are identical. We have analyzed the protein, cDNA and genomic PP4 sequences to provide insight into the structure, function and potential regulation of PP4. Genomic Southern blots demonstrated the conservation of PP4 across species. Using Northern blotting and in situ hybridization, we have examined the expression of PP4 in murine embryos and adult tissues. In adult tissues, PP4 was expressed at high levels in the testis, kidney, liver, and lung, and at lower levels in virtually all tissues. PP4 was differentially expressed in murine embryos at different developmental stages, suggesting that PP4 is a developmentally regulated protein phosphatase.
authors.affiliation: Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, USA. michu@mdanderson.org
authors.forename: M C
authors.initials: MC
authors.lastname: Hu
authors.forename: J W
authors.initials: JW
authors.lastname: Shui
authors.forename: K A
authors.initials: KA
authors.lastname: Mihindukulasuriya
authors.forename: T H
authors.initials: TH
authors.lastname: Tan
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015152:Blotting, Northern; D002417:Cattle; D003001:Cloning, Molecular; D017124:Conserved Sequence / Q000235:genetics; D004247:DNA / Q000737:chemistry / Q000235:genetics; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D004285:Dogs; D004622:Embryo, Mammalian / Q000201:enzymology / Q000378:metabolism; D019143:Evolution, Molecular; D005091:Exons; D018507:Gene Expression Regulation, Developmental; D015971:Gene Expression Regulation, Enzymologic; D005796:Genes / Q000235:genetics*; D006801:Humans; D017403:In Situ Hybridization; D007438:Introns; D051379:Mice; D008969:Molecular Sequence Data; D010749:Phosphoprotein Phosphatases / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D011817:Rabbits; D051381:Rats; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid; D013997:Time Factors
chemical_list: D018076:DNA, Complementary; D012333:RNA, Messenger; D004247:DNA; D010749:Phosphoprotein Phosphatases; C080406:protein phosphatase 4