Xenopus tropicalis      CAMK      CAMKL

※ CAMKL family introduction

    CAMKL family consists of several subfamily including SNRK, QIK, BRSK, AMPK, MARK, NuaK, NIM1, HUNK, LKB, PASK, MELK and CHK1. They are classified into CAMKL family for the high similarity kinase catalytic domain.
AMPK subfamily (AMP-activated protein kinase) consists of three subunits, a catalytic subunit (α) and two regulatory subunits (β and γ). Two catalytic subunits have been identified in mammals. Activation of AMPK is involved in two steps; first, AMP binds to γ-subunit, and second the phosphorylation of threonine 172 by LKB1. Activated AMPK target a variety of substrates and participate different cellular processes, including mTORC1 signaling, phosphorylation of p53 or other tumor suppressors (1).
MARK subfamily (microtubule-affinity regulating kinases) consists of four members (MARK1-MARK4) in mammals cells. All isoforms contain a N-terminal header, a catalytic kinase domain, a ubiquitin-associated domain, a spacer domain and a C-terminal KA1 domain. MARKs are discovered for its ability to regulate the stability of microtubules. Studies also show that MARK has some relation with disease, such as Alzheimer's disease (2).
Nuak subfamilies are AMPK related kinases. NuaK1 are stress-activated kinase which is involved in tolerance to glucose starvation. NuaK1 can induce cell-cell detachment by increasing F-actin conversion to G-actin. NuaK1 can protects cells from CD95-mediated apoptosis and is required for the increased motility and invasiveness of CD95- activated tumor cells (3).

Reference
1. Luo, Z., Zang, M. and Guo, W. (2010) AMPK as a metabolic tumor suppressor: control of metabolism and cell growth. Future Oncol, 6, 457-470. PMID: 20222801
2. Matenia, D. and Mandelkow, E.M. (2009) The tau of MARK: a polarized view of the cytoskeleton. Trends Biochem Sci, 34, 332-342. PMID: 19559622
3. Suzuki, A., Kusakai, G., Kishimoto, A., Minegichi, Y., Ogura, T. and Esumi, H. (2003) Induction of cell-cell detachment during glucose starvation through F-actin conversion by SNARK, the fourth member of the AMP-activated protein kinase catalytic subunit family. Biochem Biophys Res Commun, 311, 156-161. PMID: 14575707


There are 20 genes.  Reviewed (1 or Unreviewed (19

No.StatusEKPD IDGene IDGene Name
1
EKS-XET-00315
ENSXETG00000012767
mark3
2
EKS-XET-00321
ENSXETG00000018772
nuak1
3
EKS-XET-00329
ENSXETG00000006551
melk
4
EKS-XET-00332
ENSXETG00000013685
sik1
5
EKS-XET-00326
ENSXETG00000000974
nuak2; LOC100158605
6
EKS-XET-00325
ENSXETG00000022022
snrk
7
EKS-XET-00318
ENSXETG00000010165
sik2
8
EKS-XET-00323
ENSXETG00000022924
brsk1
9
EKS-XET-00324
ENSXETG00000004614
brsk2
10
EKS-XET-00320
ENSXETG00000011138
prkaa2
11
EKS-XET-00319
ENSXETG00000007026
prkaa1
12
EKS-XET-00316
ENSXETG00000002704
mark2
13
EKS-XET-00327
ENSXETG00000023522
LOC100485259
14
EKS-XET-00333
ENSXETG00000032412
PASK
15
EKS-XET-00328
ENSXETG00000032954
nim1; LOC100491267
16
EKS-XET-00330
ENSXETG00000014861
chek1
17
EKS-XET-00322
ENSXETG00000003762
sik3
18
EKS-XET-00317
ENSXETG00000019104
mark4
19
EKS-XET-00334
ENSXETG00000003285
stk11
20
EKS-XET-00331
ENSXETG00000007352
hunk; makv