Mustela putorius furo      Atypical/PIKK


※ PIKK family introduction

    Phosphatidylinositol-3 kinase-related kinases (PIKKs) belong to atypical protein kinase group, which share little similarity of kinase catalytic domain. PIKKs family contains six members which are involved in responding to various stresses, including DNA damage, blocks in DNA replication, availability of nutrients and errors in mRNA splicing. The protein kinase domain of PIKKS, located in C-terminus, is always flanked by two conserved domain, known as FAT and FATC domain, which may interact and participate in kinase regulation (1). ATM, one of family member, is involved in responding to a specific type of DNA damage, such as DNA double strand breaks, and controls the cell-cycle progression by phosphorylates multiple substrates including p53 and Chk2. In addition, ATM also locates in cytoplasmic especially in neuronal or neuron-like cells (2). Ataxia telangiectasia and Rad3-related protein (ATR) acts as a DNA damage sensor. Activated by DNA lesions including base adducts, crosslinks, DSBs, and compounds that directly promote replication stress such as hydroxyurea and aphidicolin and phosphorylates multiple substrates to control the DNA replication and mitosis (3). mTOR is a serine/threonine protein kinase which is a central regulator of cellular metabolism, growth and survival in response to hormones, growth factors, nutrients, energy and stress signals. mTOR is regulated by dynamic changes in cellular localization (3). Transformation/transcription domain-associated protein (TRRAP) is also structurally related to the PIKK family. TRRAP proteins (Tra1 in budding yeast) are common components of many histone acetyltransferase (HAT) complexes, and mediate a variety of cellular processes by recruiting HAT complexes to chromatin (4).

Reference
1. Lempiainen, H. and Halazonetis, T.D. (2009) Emerging common themes in regulation of PIKKs and PI3Ks. EMBO J, 28, 3067-3073. PMID: 19779456
2. Yang, D.Q., Halaby, M.J., Li, Y., Hibma, J.C. and Burn, P. (2011) Cytoplasmic ATM protein kinase: an emerging therapeutic target for diabetes, cancer and neuronal degeneration. Drug Discov Today, 16, 332-338. PMID: 21315178
3. Lovejoy, C.A. and Cortez, D. (2009) Common mechanisms of PIKK regulation. DNA Repair (Amst), 8, 1004-1008. PMID: 19464237
4. Kanoh, J. and Yanagida, M. (2007) Tel2: a common partner of PIK-related kinases and a link between DNA checkpoint and nutritional response? Genes Cells, 12, 1301-1304. PMID: 18076567


There are 16 genes.  Reviewed (0 or Unreviewed (16

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Muf-g008
ENSMPUG00000003207.1
M3XVS4
2
iEKPD-Muf-0148
ENSMPUG00000005971.1
M3Y3L9
ATM
3
iEKPD-Muf-0296
ENSMPUG00000012022.1
M3YKS3
ATR
4
iEKPD-Muf-0407
ENSMPUG00000016429.1
M3YYB5
MTOR
5
iEKPD-Muf-0103
ENSMPUG00000003786.1
M3XXF6
PI4KB
6
iEKPD-Muf-0337
ENSMPUG00000013343.1
M3YPI6
PIK3C2A
7
iEKPD-Muf-g002
ENSMPUG00000011699.1
M3YJU8
PIK3C2B
8
iEKPD-Muf-0275
ENSMPUG00000011448.1
M3YJ51
PIK3C2G
9
iEKPD-Muf-0038
ENSMPUG00000001018.1
M3XPL0
PIK3C3
10
iEKPD-Muf-0427
ENSMPUG00000017207.1
M3Z0I7
PIK3CA
11
iEKPD-Muf-0232
ENSMPUG00000009122.1
M3YCJ0
PIK3CB
12
iEKPD-Muf-0155
ENSMPUG00000006245.1
M3Y4E1
PIK3CD
13
iEKPD-Muf-0457
ENSMPUG00000018251.1
M3Z3H5
PIK3CG
14
iEKPD-Muf-0039
ENSMPUG00000001020.1
M3XPL2
PRKDC
15
iEKPD-Muf-0339
ENSMPUG00000013392.1
M3YPN5
SMG1
16
iEKPD-Muf-0410
ENSMPUG00000016556.1
M3YYP3
TRRAP