F FACTOR
\ˈɛf fˈaktə], \ˈɛf fˈaktə], \ˈɛ_f f_ˈa_k_t_ə]\
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A plasmid whose presence in the cell, either extrachromosomal or integrated into the bacterial chromosome, determines the "sex" of the bacterium, host chromosome mobilization, transfer via conjugation of genetic material, and the formation of sex pili.
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Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.