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Proteins of parotoid gland secretions from toads of the genus Bufo

Perry, David (2000) Proteins of parotoid gland secretions from toads of the genus Bufo. Contemporary Herpetology, 3 . ISSN 1094-2246

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Official URL: http://www.contemporaryherpetology.org/ch/2000/3/i...


Freeze-dried parotoid gland secretions from toads of the genus Bufo contained large proportions of protein (25-35% by weight). SDS-PAGE suggested that secretions from several species of Bufo contained mixtures of proteins in the relative molecular mass range of approximately 12 - 200 kDa, which exhibited markedly different banding patterns from species to species. These proteins were presumably not discovered before because the previous extraction procedures used with these secretions were designed to examine low molecular mass compounds and would denature the proteins. SDS-PAGE of secretions from B. mauritanicus and B. calamita are shown here. The N-terminal amino acid sequence of one of the bands (approx. 58 kDa) of B. mauritanicus was found to be LPIPAFPGLDHGF and of a B. calamita band (30.5 kDa) was VQVFGLQKEA. No significant similarities to these two sequences and to three separate but partial N-terminal sequences obtained from these species were found in genetic databases.

Item Type:Article
Research Community:University of Westminster > Life Sciences, School of
ID Code:5332
Deposited On:02 Jul 2008 11:42
Last Modified:07 Jun 2010 12:56

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