Evidence for Na+/H+ antiport inMethanospirillum Hungatei |
| |
Authors: | P Rusňák P ?migáň M Greksák |
| |
Institution: | (1) Institute of Animal Biochemistry and Genetics, Slovak Academy of Sciences, 900 28 Ivanka pri Dunaji, Czechoslovakia |
| |
Abstract: | The growth and methane formation ofMethanospirillum hungatei were inhibited by an inhibitor of Na+/H+ antiport amiloride. After addition of NaCl or LiCl, when the cells had a lower intracellular pH and were deenergized, they
extruded protons into the external medium. The acidification of the external medium was stimulated by protonophores and inhibited
by amiloride. These findings suggest the existence of an Na+/H+ antiport in the cytoplasmic membrane ofM. hungatei and its role in the energetics of methanogenic bacteria. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |