Xiphophorus maculatus      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 13 genes.  Reviewed (0 or Unreviewed (13

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Xim-0659
ENSXMAG00000000280.1
M3ZDI9
2
iEKPD-Xim-0673
ENSXMAG00000000475.1
M3ZE33
3
iEKPD-Xim-0677
ENSXMAG00000000505.1
M3ZE62
4
iEKPD-Xim-0676
ENSXMAG00000001164.1
M3ZG32
5
iEKPD-Xim-0672
ENSXMAG00000002617.1
M3ZK73
6
iEKPD-Xim-1568
ENSXMAG00000005765.1
M3ZU95
7
iEKPD-Xim-0656
ENSXMAG00000007221.1
M3ZYE7
8
iEKPD-Xim-0678
ENSXMAG00000007467.1
M3ZZ58
9
iEKPD-Xim-0623
ENSXMAG00000007721.1
M3ZZV0
10
iEKPD-Xim-0660
ENSXMAG00000009390.1
M4A4M1
11
iEKPD-Xim-0658
ENSXMAG00000009395.1
M4A4M3
12
iEKPD-Xim-0661
ENSXMAG00000015788.1
M4AMX3
13
iEKPD-Xim-0657
ENSXMAG00000000525.1
M3ZE82
CTDSP1