As inferred from bovine homologs, TSFM (EF-Ts, EF-TsMt) acts as a guanine nucleotide exchange factor to regenerate TUFM:GTP (EF-Tu:GTP) from TUFM:GDP. In the first step of the process TSFM binds TUFM:GDP and displaces GDP, yielding a TSFM:TUFM complex and GDP.
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