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. 1978 May;77(2):329-33.
doi: 10.1083/jcb.77.2.329.

Activation of the rabbit polymorphonuclear leukocyte membrane "Na+, K+"-ATPase by chemotactic factor

E L Becker, V Talley, H J Showell, P H Naccache, R I Sha'afi

Activation of the rabbit polymorphonuclear leukocyte membrane "Na+, K+"-ATPase by chemotactic factor

E L Becker et al. J Cell Biol. 1978 May.

Abstract

Addition of the synthetic chemotactic factor, formyl-methionyl-leucyl-phenylala-nine (F-Met-Leu-Phe) to medium containing magnesium, sodium, and potassium results in a doubling of the "Na+, K+"-ATPase activity of the plasma membrane fraction from polymophonuclear leukocytes (PMN). This activation is sensitive to ouabain inhibition and is dose dependent, maximal activity occuring at 10(-9)MF-Met-Leu-Phe. Equivalent activation was observed with the nonformylated derivative Met-Leu-Phe at 10(-9)M. The dipeptide, carbobenzoxy-methionylphenylalanine, which acts as an antagonist for F-Met-Leu-Phe, prevents the stimulation of the "Na+, K+"-ATPase by F-Met-Leu-Phe.

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