Words similar to α-actinin
Example sentences for: α-actinin
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Affinity-purified rabbit antiserum raised against a recombinant chicken α-actinin fragment detected picogram amounts of the immunizing amino-terminal protein fragment (Fig.
The calculated molecular mass of this α-actinin fragment was 30,700 Da.
We have shown that α-actinin is abundant in the bone marrow stroma matrix, presumably at focal adhesion sites [ 5 ] . We have also reported that a 31 kDa amino-terminal α-actinin fragment, which we have named mactinin, is generated by the degradation of extracellular α-actinin by monocyte-secreted urokinase [ 6 ] . Furthermore, we have demonstrated that mactinin is present in inflammation caused by Pneumocystis carinii pneumonia, by examining bronchoalveolar lavage fluid from mice with infection [ 6 ] . It was not present in mice not challenged with P. carinii , suggesting that inflammaton is necessary for mactinin formation.
Interestingly, inhibition of Rho-p160ROCK has recently been shown to give similar lymphocyte morphology as inhibition of Rho with C3 [ 50 ] . Another interesting candidate may be p120 PKN, as recent studies have established that PKN phosphorylates cytoskeletal intermediate filaments [ 47 ] and is directly linked to the cytoskeletal network through associations with α-actinin [ 48 ] . Also, PKN may be involved in relating cytoplasmic signals to the nucleus, for in response to stress, nuclear translocation of PKN occurs [ 49 ] . This is particularly important in light of previous work demonstrating that inactivation of Rho in peripheral blood T lymphocytes inhibits costimulatory signals up-regulating IL-2 production [ 25 ] . Future experiments will focus on determining the relationship of Rho GTPases and the regulation of T cell morphology [ 25 51 52 ] .
In contrast, intact α-actinin has no maturation-promoting activity.
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