Table 2. Homology of PDHB from the M. bovis strain PD and other mycoplasmas.
| Mycoplasmas | NCBI Reference sequence | Homology |
| Mycoplasma bovis PG45 | YP_004055971.1 | 100.0% |
| Mycoplasma bovis Hubei-1 | YP_004683146.1 | 99.7% |
| Mycoplasma bovis HB0801 | YP_006470739.1 | 99.7% |
| Mycoplasma agalactiae PG2 | YP_001256238.1 | 98.2% |
| Mycoplasma bovigenitalium | WP_004420033.1 | 66.2% |
| Mycoplasma ovipneumoniae | WP_010321080.1 | 58.5% |
| Mycoplasma mycoides subsp. capri str. GM12 | ACU79371.1 | 47.9% |
| Mycoplasma mycoides subsp. mycoides SC str. PG1 | NP_975265.1 | 47.9% |
| Mycoplasma capricolum subsp. capricolum ATCC 27343 | YP_424213.1 | 47.3% |
Mycoplasmas shown on the list were selected using the NCBI BLAST server, basing on the principle of recent homology. Then the amino acid sequences of these PDHBs were downloaded from NCBI, and DNAstar software (version 5.0) was used to analyze the homology.