PROTON MOTIVE FORCES
\pɹˈə͡ʊtɒn mˈə͡ʊtɪv fˈɔːsɪz], \pɹˈəʊtɒn mˈəʊtɪv fˈɔːsɪz], \p_ɹ_ˈəʊ_t_ɒ_n m_ˈəʊ_t_ɪ_v f_ˈɔː_s_ɪ_z]\
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Energy that is generated by the transfer of protons or electrons across an energy-transducing membrane and that can be used for chemical, osmotic, or mechanical work. Proton-motive force can be generated by a variety of phenomena including the operation of an electron transport chain, illumination of a purple membrane, and the hydrolysis of ATP by a proton ATPase. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p171)
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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.-.