Mus musculus      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 5 genes.  Reviewed (5 or Unreviewed (0

No.StatusiEKPD IDEnsemble Gene IDUniProt AccessionGene Name
1
iEKPD-Mum-0207
ENSMUSG00000027470.9
Q8VCR8
Mylk2
2
iEKPD-Mum-0282
ENSMUSG00000031698.14
Q3UIZ8
Mylk3
3
iEKPD-Mum-0377
ENSMUSG00000044951.14
Q5SUV5
Mylk4; Sgk085
4
iEKPD-Mum-0134
ENSMUSG00000022836.10
Q6PDN3
Mylk
5
iEKPD-Mum-0394
ENSMUSG00000051747.14
A2ASS6
Ttn