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Structurally, myosin light chains belong to the EF-hand family, a large family of Ca 2+ - binding proteins. MLCs contain two Ca 2+ - binding EF-hand motifs. MLCs isoforms modulate the Ca 2+ of force transduction and cross-bridge kinetics. Myosin light chains (MLCs) can be broadly classified into two groups: Essential or alkali MLC (MLC1 or ELC),
IgD and IgE myeloma are very rare. In addition, light and or heavy chains (the building blocks of antibodies) may be secreted in isolation: κ- or λ-light chains or any of the five types of heavy chains (α-, γ-, δ-, ε- or μ-heavy chains). People without evidence of a monoclonal protein may have "nonsecretory" myeloma (not producing ...
Serum protein electrophoresis showing a paraprotein (spike/peak in the gamma zone) in a patient with multiple myeloma.. A myeloma protein is an abnormal antibody (immunoglobulin) or (more often) a fragment thereof, such as an immunoglobulin light chain, that is produced in excess by an abnormal monoclonal proliferation of plasma cells, typically in multiple myeloma or Monoclonal gammopathy of ...
In smooth muscle, a single gene [20]) codes for the heavy chains myosin II, but splice variants of this gene result in four distinct isoforms. [19] It also contains 4 myosin light chains (MLC), resulting in 2 per head, weighing 20 (MLC 20) and 17 (MLC 17) kDa. [19] These bind the heavy chains in the "neck" region between the head and tail.
Myosin light polypeptide 6 is a protein that in humans is encoded by the MYL6 gene. [5] [6] [7] [8]Myosin is a hexameric ATPase cellular motor protein.It is composed of two heavy chains, two nonphosphorylatable alkali light chains, and two phosphorylatable regulatory light chains.
Light meromyosin has a long, straight portion in the “tail” region. Heavy meromyosin (HMM) is a protein chain terminating in a globular head portion/cross bridge. [3] HMM consists of two subunits, Heavy Meromyosin Subunit 1 and 2 (HMMS-1 and HMMS-2). The majority of myosin activity is concentrated in HMMS-1.
Myeloma cast nephropathy, also referred to as light-chain cast nephropathy, is the formation of plugs (urinary casts) in the kidney tubules from free immunoglobulin light chains leading to kidney failure in the context of multiple myeloma. It is the most common cause of kidney injury in myeloma.
Myosin light chain pulls the actin stress fiber attached to the cadherin, resisting the force of the adjacent cell's cadherin. However, when the inward pulling force of the actin stress fiber becomes greater than the outward pulling force of the cell adhesion molecules due to an overactive MYLK, tissues can become slightly pulled apart and ...
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