Title
General characterization of Tityus fasciolatus scorpion venom. Molecular identification of toxins and localization of linear B-cell epitopes
Date Issued
01 June 2015
Access level
open access
Resource Type
journal article
Author(s)
Mendes T.M.
Guimarães-Okamoto P.T.C.
Machado-De-Avila R.A.
Oliveira D.
Melo M.M.
Lobato Z.I.
Kalapothakis E.
Universidade Federal de Minas Gerais
Publisher(s)
Elsevier Ltd
Abstract
This communication describes the general characteristics of the venom from the Brazilian scorpion Tityus fasciolatus, which is an endemic species found in the central Brazil (States of Goiás and Minas Gerais), being responsible for sting accidents in this area. The soluble venom obtained from this scorpion is toxic to mice being the LD<inf>50</inf> is 2.984 mg/kg (subcutaneally). SDS-PAGE of the soluble venom resulted in 10 fractions ranged in size from 6 to 10-80 kDa. Sheep were employed for anti-T. fasciolatus venom serum production. Western blotting analysis showed that most of these venom proteins are immunogenic. T. fasciolatus anti-venom revealed consistent cross-reactivity with venom antigens from Tityus serrulatus. Using known primers for T. serrulatus toxins, we have identified three toxins sequences from T. fasciolatus venom. Linear epitopes of these toxins were localized and fifty-five overlapping pentadecapeptides covering complete amino acid sequence of the three toxins were synthesized in cellulose membrane (spot-synthesis technique). The epitopes were located on the 3D structures and some important residues for structure/function were identified.
Start page
109
End page
117
Volume
99
Language
English
OCDE Knowledge area
Toxicología
Scopus EID
2-s2.0-84926229329
PubMed ID
Source
Toxicon
ISSN of the container
00410101
Sponsor(s)
This research was supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brazil – CAPES (Toxinologia N° 23038000825/2011-63 ), Fundação de Amparo a Pesquisa do Estado de Minas Gerais, Brazil (FAPEMIG) and by funds of the INCTTOX Program of Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil (CNPq) ( 573790/2008-6 ).
Sources of information: Directorio de Producción Científica Scopus