ELISA/assay

Human myosin light chain kinase, MLCK ELISA Kit

MBS704311

96 Strip Wells

850 USD

ELISA Kit

Human myosin light chain kinase, MLCK ELISA Kit

myosin light chain kinase

Human myosin light chain kinase; MLCK ELISA Kit; DKFZp686I10125; FLJ12216; KRP; MLCK; MLCK1; MLCK108; MLCK210; MSTP083; MYLK1; smMLCK; OTTHUMP00000180642; myosin; light polypeptide kinase; smooth muscle myosin light chain kinase; myosin light chain kinase

myosin light chain kinase, smooth muscle isoform 1; Myosin light chain kinase, smooth muscle; myosin light chain kinase, smooth muscle; telokin; kinase-related protein; myosin, light polypeptide kinase; smooth muscle myosin light chain kinase; myosin light chain kinase; Kinase-related protein; KRP; TelokinCleaved into the following chain:Myosin light chain kinase, smooth muscle, deglutamylated form

MYLK

MYLK; MYLK; KRP; AAT7; MLCK; MLCK1; MYLK1; smMLCK; MLCK108; MLCK210; MSTP083; MLCK; MLCK1; MYLK1; MLCK; smMLCK; KRP

MYLK_HUMAN

Human

1914

This assay has high sensitivity and excellent specificity for detection of Human MYLK. No significant cross-reactivity or interference between Human MYLK and analogues was observed.

Unopened test kits should be stored at 2 to 8 degree C upon receipt. Please refer to pdf manual for further storage instructions.

Intra-assay Precision: Intra-assay Precision (Precision within an assay): CV% is less than 8%. Three samples of known concentration were tested twenty times on one plate to assess. Inter-assay Precision (Precision between assays): CV% is less than 10%. Three samples of known concentration were tested in twenty assays to assess. Sample Type: serum, plasma, tissue homogenates, cell lysates. Detection Range: 0.78 ng/ml-50 ng/ml. Detection Wavelength: 450 nm. Sensitivity: 0.195 ng/ml

Sample Volume: 50-100ul

Introduction: Myosin-light-chain kinase also known as MYLK or MLCK is a serine/threonine-specific protein kinase that phosphorylates the regulatory light chain of myosin II. These enzymes are important in the mechanism of contraction in muscle. Once there is an influx of calcium cations (Ca++) into the muscle, either from the sarcoplasmic reticulum or, more importantly, from the extracellular space, contraction of smooth muscle fibers may begin. First, the calcium will bind to calmodulin. This binding will activate MLCK, which will go on to phosphorylate the myosin light chain at serine residue 19. This will enable the myosin crossbridge to bind to the actin filament and allow contraction to begin (through the crossbridge cycle). Since smooth muscle does not contain a troponin complex like striated muscle does, this mechanism is the main pathway for regulating smooth muscle contraction. Principle of the Assay: The microtiter plate provided in this kit has been pre-coated with an antibody specific to MLCK. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody preparation specific for MLCK and Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB (3,3',5,5' tetramethyl-benzidine) substrate solution is added to each well. Only those wells that contain MLCK, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm +/- 2 nm. The concentration of MLCK in the samples is then determined by comparing the O.D. of the samples to the standard curve.

116008192

NP_444253.3

NM_053025.3

Q15746

210,715 Da

Aurora B Signaling Pathway 138080!!Calcium Signaling Pathway 83050!!Calcium Signaling Pathway 459!!Endothelin Pathway 672453!!Focal Adhesion Pathway 198795!!Focal Adhesion Pathway 83067!!Focal Adhesion Pathway 478!!Gastric Acid Secretion Pathway 154409!!Gastric Acid Secretion Pathway 154383!!MicroRNAs In Cardiomyocyte Hypertrophy Pathway 198784

This gene, a muscle member of the immunoglobulin gene superfamily, encodes myosin light chain kinase which is a calcium/calmodulin dependent enzyme. This kinase phosphorylates myosin regulatory light chains to facilitate myosin interaction with actin filaments to produce contractile activity. This gene encodes both smooth muscle and nonmuscle isoforms. In addition, using a separate promoter in an intron in the 3' region, it encodes telokin, a small protein identical in sequence to the C-terminus of myosin light chain kinase, that is independently expressed in smooth muscle and functions to stabilize unphosphorylated myosin filaments. A pseudogene is located on the p arm of chromosome 3. Four transcript variants that produce four isoforms of the calcium/calmodulin dependent enzyme have been identified as well as two transcripts that produce two isoforms of telokin. Additional variants have been identified but lack full length transcripts. [provided by RefSeq, Jul 2008]

Function: Calcium/calmodulin-dependent myosin light chain kinase implicated in smooth muscle contraction via phosphorylation of myosin light chains (MLC). Also regulates actin-myosin interaction through a non-kinase activity. Phosphorylates PTK2B/PYK2 and myosin light-chains. Involved in the inflammatory response (e.g. apoptosis, vascular permeability, leukocyte diapedesis), cell motility and morphology, airway hyperreactivity and other activities relevant to asthma. Required for tonic airway smooth muscle contraction that is necessary for physiological and asthmatic airway resistance. Necessary for gastrointestinal motility. Implicated in the regulation of endothelial as well as vascular permeability, probably via the regulation of cytoskeletal rearrangements. 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. Plays a role in the regulation of epithelial cell survival. Required for epithelial wound healing, especially during actomyosin ring contraction during purse-string wound closure. Mediates RhoA-dependent membrane blebbing. Triggers TRPC5 channel activity in a calcium-dependent signaling, by inducing its subcellular localization at the plasma membrane. Promotes cell migration (including tumor cells) and tumor metastasis. PTK2B/PYK2 activation by phosphorylation mediates ITGB2 activation and is thus essential to trigger neutrophil transmigration during acute lung injury (ALI). May regulate optic nerve head astrocyte migration. Probably involved in mitotic cytoskeletal regulation. Regulates tight junction probably by modulating ZO-1 exchange in the perijunctional actomyosin ring. Mediates burn-induced microvascular barrier injury; triggers endothelial contraction in the development of microvascular hyperpermeability by phosphorylating MLC. Essential for intestinal barrier dysfunction. Mediates Giardia spp.-mediated reduced epithelial barrier function during giardiasis intestinal infection via reorganization of cytoskeletal F-actin and tight junctional ZO-1. Necessary for hypotonicity-induced Ca2+ entry and subsequent activation of volume-sensitive organic osmolyte/anion channels (VSOAC) in cervical cancer cells. Responsible for high proliferative ability of breast cancer cells through anti-apoptosis.13 PublicationsManual assertion based on experiment in:Ref.4. Catalytic activity: ATP + [myosin light-chain] = ADP + [myosin light-chain] phosphate. Cofactor: Magnesium. Enzyme regulation: Isoform 1 is activated by phosphorylation on Tyr-464 and Tyr-471. Isoforms which lack these tyrosine residues are not regulated in this way. All catalytically active isoforms require binding to calcium and calmodulin for activation. Repressed by organometallic pyridylnaphthalimide complexes, wortmannin, ML-7 (a synthetic naphthalenesulphonyl derivative that inhibits the binding of ATP to MLCK) and ML-9.6 PublicationsManual assertion based on experiment in:Ref.4

96 Strip Wells

850 USD