Oreochromis niloticus      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 12 genes.  Reviewed (0 or Unreviewed (12

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Orn-0645
ENSONIG00000004580.1
I3JA77
2
iEKPD-Orn-0664
ENSONIG00000012681.1
I3K4B8
3
iEKPD-Orn-0655
ENSONIG00000018951.1
I3KRW7
ctdnep1
4
iEKPD-Orn-1577
ENSONIG00000007685.1
I3JLE3
ctdp1
5
iEKPD-Orn-0647
ENSONIG00000012356.1
I3K369
CTDSP1
6
iEKPD-Orn-0656
ENSONIG00000016535.1
I3KI79
ctdsp2
7
iEKPD-Orn-0652
ENSONIG00000005811.1
I3JEM6
ctdspl
8
iEKPD-Orn-0675
ENSONIG00000006240.1
I3JG72
ctdspl2
9
iEKPD-Orn-0650
ENSONIG00000015609.1
I3KEU6
LOC100691308
10
iEKPD-Orn-0668
ENSONIG00000008400.1
I3JNW7
LOC100695025
11
iEKPD-Orn-0672
ENSONIG00000001216.1
I3IY47
timm50
12
iEKPD-Orn-0659
ENSONIG00000008623.1
I3JPP6
ublcp1