Fig. 3

Distinct expression profiles in house and black widow spider venom glands. Shown is the percent of overall expression (as TPM) constituted by five families or functional categories of proteins, including known toxin types, in the venom gland biased transcriptomes (≥10-fold greater in venom than in silk and ovary or cephalothorax tissues and venom expression ≥ 10 TPM) of house (left – calculated from 379 venom biased sequences) and black widow (right – 417 venom biased sequences) spiders. Mini-protein = inhibitory cystine knot toxins, novel = members of the novel family described in Fig. 5 and Additional file 6, uncharacterized/other = all other proteins in the set of venom gland biased sequences (Additional file 3). Please see Additional file 9 for a high resolution version of this figure