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Neighbor-join bootstrap tree and intron map of the A-type P450s.
Bootstrap values are out of 1000 trials. Phase 0 introns: |; Phase 1 introns: [; Phase 2 introns: ]. Phase 0 introns are positioned between two codons, phase 1 introns are positioned after the first base in the scondon, and phase 2 introns after the second base of the condon. P450s lacking an intronmap are intronless.
