Figure 1.

A model of a profile HMM of length 3. Transitions marked by solid arrows constitute the Plan7 model used by HMMER [12]. In the SAM model [5], additionally D I and I D transitions (dashed arrows) are possible.

Schuster-Böckler et al. BMC Bioinformatics 2004 5:7   doi:10.1186/1471-2105-5-7
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