※ 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

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No.	Status	EKPD ID	Gene ID	Gene Name
1		EPS-ORC-00064	ENSOCUG00000016574	CTDSP1
2		EPS-ORC-00069	ENSOCUG00000012940
3		EPS-ORC-00068	ENSOCUG00000003879	CTDP1
4		EPS-ORC-00063	ENSOCUG00000012533	LOC100341986
5		EPS-ORC-00062	ENSOCUG00000027494	CTDNEP1
6		EPS-ORC-00067	ENSOCUG00000017811	CTDSP2
7		EPS-ORC-00061	ENSOCUG00000005366	CTDSPL2
8		EPS-ORC-00065	ENSOCUG00000002166	TIMM50
9		EPS-ORC-00066	ENSOCUG00000002224	UBLCP1