Callithrix jacchus      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 8 genes.  Reviewed (0 or Unreviewed (8

No.StatusEKPD IDGene IDGene Name
1
EPS-CAJ-00065
ENSCJAG00000016644
CTDNEP1; LOC100397255
2
EPS-CAJ-00066
ENSCJAG00000010930
LOC100389298; CTDSP1
3
EPS-CAJ-00070
ENSCJAG00000019057
LOC100395035; UBLCP1
4
EPS-CAJ-00069
ENSCJAG00000014276
TIMM50
5
EPS-CAJ-00067
ENSCJAG00000006503
LOC100409877
6
EPS-CAJ-00071
ENSCJAG00000010153
CTDP1
7
EPS-CAJ-00068
ENSCJAG00000017448
CTDSP2
8
EPS-CAJ-00064
ENSCJAG00000002423
CTDSPL2