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Table 2 Sequence conservation within subfamilies of the PR-10 family among eight Betula species.

From: Characterization of PR-10 genes from eight Betula species and detection of Bet v 1 isoforms in birch pollen

Subfamily 01 02 03 04 05 06 07
Sequences with an intact ORF        
n = 33 19 39 6 14 0 1
Ka/Ks ratio 0.18 0.27 0.10 0.36 0.09 n. d. n. d.
Range substitutions 0 – 16 0 – 9 0 – 8 0 – 6 0 – 4 n. d. n. d.
Average # substitutions 7.0 3.1 2.8 3.3 0.9 n. d. n. d.
Pseudogene sequences        
n = 9 5 3 0 0 4 1
Ka/Ks ratio 0.38 0.30 0.20 n. d. n. d. 0.57 n. d.
  1. n = number of unique sequences. Ka/Ks ratio = ratio between non-synonymous and synonymous mutations. Range substitutions = minimum and maximum number of amino acid substitutions in pair wise comparisons between sequences of the same subfamilies. n. d. = not determined.