Existence of a new protein component with the same function as the LukF component of leukocidin or γ‐hemolysin and its gene in Staphylococcus aureus P83

FEBS Letters

Choorit, Wanna¹  Kamio, Yoshiyuki¹  Kaneko, Jun¹  Muramoto, Koji¹ 

[1] Department of Applied Biological Chemistry, Faculty of Agriculture, Tohoku University, Tsutsumi-dori, Amamiya-machi, Aoba-ku, Sendai 981, Japan

关键词: Leukocidin;    γ-hemolysin;    LukM component;    LukF component;    LukS component;    HγII component;    Staphylococcus aureus;    LukM;    M-component of leukocidin/γ-hemolysin;    LukF;    F-component of leukocidin/γ-hemolysin;    LukS;    S-component of leukocidin;    HγII;    HγII component of γ-hemolysin;    PCR;    polymerase chain reaction;   

DOI  :  10.1016/0014-5793(94)01372-8

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Staphylococcal toxins, leukocidin and γ-hemolysin, consist of two protein components, i.e. LukF and LukS for leukocodin and HγI and HγII for γ-hemolysin. From a culture fluid of Staphylococcus aureus strain P83, a new protein component of leukocidin or γ-hemolysin which was designated as LukM was isolated. This component showed the same biological activity as that of LukF component for leukocidin or HγI component of γ-hemolysin in combination with LukS or HγII. However, the LukM component cross-reacted with the anti-LukS antibodies but not with the anti-LukF antibodies. On the basis of chemical analysis of the LukM component and the cloning and nucleotide sequencing of the lukM gene of S. aureus P83, we have demonstrated that LukM is an entirely new protein component of leukocidin or γ-hemolysin. The deduced amino acid sequence of LukM from the lukM gene showed 66.7% and 67% indentity to that of LukS and Hγll, respectively. However, the amino acid sequence of LukM and LukF showed only 29% homology.

【 授权许可】

Unknown