1.1.2.4 (R)-lactate + 2 ferricytochrome c - 1.1.2.4 (R)-lactate + 2 ferricytochrome c required for growth on lactate as sole carbon source 1.1.2.4 (R)-lactate + 2 ferricytochrome c pathway linked to respiratory chain 1.1.2.4 (R)-lactate + 2 ferricytochrome c enzyme D-LDH is absolutely specific for these substrates in vivo 1.1.2.4 additional information study of the D-lactate transport and metabolism in Helianthus tuberosus, overview