• Product name

    Recombinant human Myosin light chain kinase/MLCK protein
    See all Myosin light chain kinase/MLCK proteins and peptides
  • Biological activity

    Specific Activity: 200nm/min/mg.

  • Expression system

    Insect cells
  • Protein length

    Protein fragment
  • Animal free

  • Nature

    • Species

    • Amino acids

      1425 to 1776

Associated products


Our Abpromise guarantee covers the use of ab55674 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Applications


    Functional Studies

  • Form

  • Additional notes

    ab60014 (Mouse MYL9 full length protein) can be utilized as a substrate for assessing Kinase activity

    Previously labelled as Myosin light chain kinase.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped on dry ice. Upon delivery aliquot and store at -80ºC. Avoid freeze / thaw cycles.

    pH: 7.50
    Constituents: 0.0038% EGTA, 0.00174% PMSF, 0.00385% DTT, 0.79% Tris HCl, 0.00292% EDTA, 25% Glycerol, 0.87% Sodium chloride

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

General Info

  • Alternative names

    • deglutamylated form
    • DKFZp686I10125
    • EC
    • FLJ12216
    • Kinase related protein
    • Kinase-related protein
    • KRP
    • MLCK
    • MLCK1
    • MLCK108
    • MLCK210
    • MSTP083
    • MYLK
    • MYLK1
    • Myosin light chain kinase
    • Myosin light polypeptide kinase
    • OTTHUMP00000180642
    • OTTHUMP00000180643
    • smMLCK
    • smooth muscle
    • Smooth muscle myosin light chain kinase
    • Telokin
    see all
  • Function

    Calcium/calmodulin-dependent enzyme implicated in smooth muscle contraction via phosphorylation of myosin light chains (MLC). Also regulates actin-myosin interaction through a non-kinase activty (By similarity). Implicated in the regulation of endothelial as well as vascular permeability. In the nervous system it has been shown to control the growth initiation of astrocytic processes in culture and to participate in transmitter release at synapses formed between cultured sympathetic ganglion cells. Critical participant in signaling sequences that result in fibroblast apoptosis.
  • Tissue specificity

    Smooth muscle and non-muscle isozymes are expressed in a wide variety of adult and fetal tissues and in cultured endothelium with qualitative expression appearing to be neither tissue- nor development-specific. Non-muscle isoform 2 is the dominant splice variant expressed in various tissues. Telokin has been found in a wide variety of adult and fetal tissues.
  • Sequence similarities

    Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family.
    Contains 1 fibronectin type-III domain.
    Contains 9 Ig-like C2-type (immunoglobulin-like) domains.
    Contains 1 protein kinase domain.
  • Post-translational

    MLCK is probably down-regulated by phosphorylation.
    The C-terminus is deglutamylated by AGTPBP1/ CCP1, AGBL1/CCP4 and AGBL4/CCP6, leading to the formation of Myosin light chain kinase, smooth muscle, deglutamylated form. The consequences of C-terminal deglutamylation are unknown.
  • Information by UniProt


  • The specific activity of Myosin light chain kinase/MLCK (ab55674) was determined to be 180 nmol/min/mg as per activity assay protocol
  • SDS PAGE analysis of ab55674


ab55674 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

1-3 of 3 Abreviews or Q&A


Thank you for contacting us.
The molecular weight given on website includes molecular weight of tags.
Please find attached the data regarding these two products.
I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.
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Thank you for contacting us.
The proteins will run at ˜72kDa, ab55674 and ˜17kDa, ab94519.
I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.
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Thank you for contacting us. Regarding the enquiry for MLCK, you do require the Ca/Calmodulin Solution to run the kinase assay. Please let me know if you have any further questions.

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