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Comprehensive analysis of the venom gland transcriptome of the spider Dolomedes fimbriatus

Kozlov SA 1 , Lazarev VN 2 , Kostryukova ES 2 , Selezneva OV 3 , Ospanova EA 3 , Alexeev DG 2 Show all authors , Govorun VM 4 , Grishin EV 1

Affiliations 

  • 1 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences ul. Miklukho-Maklaya, 16/10 , Moscow 117997, Russia
  • 2 Scientific Research Institute of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russian Federation, 1a, Malaya Pirogovskaya st. , Moscow 119435, Russia ; Moscow Institute of Physics and Technology, Dolgoprudny , Moscow Region 141700, Russia
  • 3 Scientific Research Institute of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russian Federation, 1a, Malaya Pirogovskaya st. , Moscow 119435, Russia
  • 4 Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences ul. Miklukho-Maklaya, 16/10 , Moscow 117997, Russia ; Scientific Research Institute of Physical-Chemical Medicine of the Federal Medical and Biological Agency of Russian Federation, 1a, Malaya Pirogovskaya st. , Moscow 119435, Russia ; Moscow Institute of Physics and Technology, Dolgoprudny , Moscow Region 141700, Russia
Sci Data, 2014;1:140023.
PMID: 25977780 DOI: 10.1038/sdata.2014.23

Abstract

A comprehensive transcriptome analysis of an expressed sequence tag (EST) database of the spider Dolomedes fimbriatus venom glands using single-residue distribution analysis (SRDA) identified 7,169 unique sequences. Mature chains of 163 different toxin-like polypeptides were predicted on the basis of well-established methodology. The number of protein precursors of these polypeptides was appreciably numerous than the number of mature polypeptides. A total of 451 different polypeptide precursors, translated from 795 unique nucleotide sequences, were deduced. A homology search divided the 163 mature polypeptide sequences into 16 superfamilies and 19 singletons. The number of mature toxins in a superfamily ranged from 2 to 49, whereas the diversity of the original nucleotide sequences was greater (2-261 variants). We observed a predominance of inhibitor cysteine knot toxin-like polypeptides among the cysteine-containing structures in the analyzed transcriptome bank. Uncommon spatial folds were also found.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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