Xiphophorus maculatus      Asp-Based PTP      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 a important role in cell survival in budding and fission yeasts. SCP1 preferentially dephosphorylate Ser5 in CTD domain of RNA polymerase II and play a role in the regulation of gene expression by controlling the transition from initiation/capping to processive transcript elongation (3). In addition, SCP1 also act 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 12 genes.  Reviewed (0 or Unreviewed (12

No.StatusEKPD IDGene IDGene Name
1
EPS-XIM-00120
ENSXMAG00000007221
CTDSP1 (2 of 2)
2
EPS-XIM-00119
ENSXMAG00000007467
CTDSPL2 (1 of 2)
3
EPS-XIM-00128
ENSXMAG00000000475
UBLCP1
4
EPS-XIM-00127
ENSXMAG00000000505
TIMM50
5
EPS-XIM-00123
ENSXMAG00000000525
CTDSP1 (1 of 2)
6
EPS-XIM-00121
ENSXMAG00000015788
CTDNEP1
7
EPS-XIM-00122
ENSXMAG00000000280
CTDSPL (2 of 2)
8
EPS-XIM-00124
ENSXMAG00000009390
CTDSP2
9
EPS-XIM-00125
ENSXMAG00000009395
CTDSPL (1 of 2)
10
EPS-XIM-00129
ENSXMAG00000005765
CTDP1
11
EPS-XIM-00126
ENSXMAG00000002617
12
EPS-XIM-00118
ENSXMAG00000001164
CTDSPL2 (2 of 2)