Danio rerio      CAMK/MLCK


※ MLCK family introduction

    MLCK (myosin light chain kinase) belongs to CAMK group and is Ca2+/calmodulin-dependent serine−threonine protein kinase which can phosphorylate the regulatory light chain of mysosin. Skeletal muscle MLCK contains an N-terminal sequence, a protein kinase catalytic core domain and a regulatory segment which consists of an autoinhibitory sequence and a calmodulin binding sequence. The expression size of MLCK in different animal species is related with diverse N-terminal sequence. The MLCKs are activated via binding with calmodulin which is a highly conserved Ca2+-binding protein (1). NMM (nonmuscle myosin) and SMM (smooth muscle myosin) are known substrates of MLCK in vivo. Phosphorylation of RLC on moysin can activate actin-activated myosin ATPase activity which is essential for muscle contraction. In addition, the phosphorylation functions of MLCKs in tracheal, bronchial and gastrointestinal smooth muscle cannot be replaced by others kinases (2).

Reference
1. Stull, J.T., Kamm, K.E. and Vandenboom, R. (2011) Myosin light chain kinase and the role of myosin light chain phosphorylation in skeletal muscle. Arch Biochem Biophys, 510, 120-128. PMID: 21284933
2. Hong, F., Haldeman, B.D., Jackson, D., Carter, M., Baker, J.E. and Cremo, C.R. (2011) Biochemistry of smooth muscle myosin light chain kinase. Arch Biochem Biophys, 510, 135-146. PMID: 21565153


There are 9 genes.  Reviewed (1 or Unreviewed (8

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Dar-0538
ENSDARG00000076348.5
A8C984
mylk3
2
iEKPD-Dar-0220
ENSDARG00000031698.7
F1QAR7
mylk2
3
iEKPD-Dar-0649
ENSDARG00000091260.3
E7FFC0
mylk4a
4
iEKPD-Dar-0341
ENSDARG00000055412.7
Q1LVF9
mylk4b
5
iEKPD-Dar-0526
ENSDARG00000075164.4
F1QPV1
mylk5
6
iEKPD-Dar-0243
ENSDARG00000034801.7
A0A140LFR4
mylka
7
iEKPD-Dar-0026
ENSDARG00000004753.10
E7FDK2
mylkb
8
iEKPD-Dar-0002
ENSDARG00000000563.13
G1K2X0
ttn.1
9
iEKPD-Dar-0197
ENSDARG00000028213.7
F1R7N8
ttn.2