Ictidomys tridecemlineatus      Asp-Based PSP/FCP


※ FCP family introduction

    FCP/SCP phosphatase belongs to a family of phosphatase which uses an Asp nucleophile for catalysis. FCP/SCP is characterized by its phosphatase activity towards the CTD of the largest subunit of RNA polymerase II (1). At least seven members have been identified in human genome and FCP/SCP phosphatases share a conserved catalytic signature, which is known as DXDXT/V (2). Family member FCP1 is conserved among all eukaryotes and plays an important role in cell survival in budding and fission yeasts. SCP1 preferentially dephosphorylates Ser5 in CTD domain of RNA polymerase II and plays a role in the regulation of gene expression by controlling the transition from initiation/capping to processive transcript elongation (3). In addition, SCP1 also acts as a key regulator that functions in silencing neuronal gene expression (4).

Reference
1. Shi, Y. (2009) Serine/threonine phosphatases: mechanism through structure. Cell, 139, 468-484. PMID: 19879837
2. Moorhead, G.B., Trinkle-Mulcahy, L. and Ulke-Lemee, A. (2007) Emerging roles of nuclear protein phosphatases. Nat Rev Mol Cell Biol, 8, 234-244. PMID: 17318227
3. Yeo, M., Lin, P.S., Dahmus, M.E. and Gill, G.N. (2003) A novel RNA polymerase II C-terminal domain phosphatase that preferentially dephosphorylates serine 5. J Biol Chem, 278, 26078-26085. PMID: 12721286
4. Yeo, M., Lee, S.K., Lee, B., Ruiz, E.C., Pfaff, S.L. and Gill, G.N. (2005) Small CTD phosphatases function in silencing neuronal gene expression. Science, 307, 596-600. PMID: 15681389


There are 8 genes.  Reviewed (0 or Unreviewed (8

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Ict-0519
ENSSTOG00000020211.2
I3NCI1
CTDNEP1
2
iEKPD-Ict-1257
ENSSTOG00000011752.3
I3MHY0
CTDP1
3
iEKPD-Ict-0523
ENSSTOG00000008434.3
I3MBM2
CTDSP1
4
iEKPD-Ict-0522
ENSSTOG00000023365.2
I3NC77
CTDSP2
5
iEKPD-Ict-0516
ENSSTOG00000001517.3
I3LYQ4
CTDSPL
6
iEKPD-Ict-0531
ENSSTOG00000002215.3
A0A287CSD3
CTDSPL2
7
iEKPD-Ict-0524
ENSSTOG00000000742.3
I3LX99
TIMM50
8
iEKPD-Ict-0520
ENSSTOG00000000854.3
I3LXG5
UBLCP1