FIG. 1.

Relationship of LDH subunits from numerous hosts. A most parsimonious tree for 26 LDH amino acid sequences is shown. Levels of amino acid substitution are expressed as percentages (bar = 10%). Most of the nodes have levels of bootstrap support of 99 to 100%; the only exceptions are the nodes labeled a (78 to 80%) or b (44 to 60%). Data for Streptococcus thermophilus (13), Streptococcus bovis (37), Streptococcus mutans (5), Lactococcus lactis (17), Lactobacillus plantarum (30), Lactobacillus sake (accession no. U26688), Lactobacillus casei (15), Bacillus megaterium (34), Bacillus stearothermophilus (40), Bacillus caldolyticus (40), Thermus aquaticus (23), Deinococcus radiodurans (21), corn (9), rice (16), tomato (8), human A (32), human B (27), pigs A and B (31), bovine A (12), mouse A, chicken A (11), dogfish A (28), and lamprey (29) have been published previously.