Tein-Shun Tsai

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With bioenergetic modeling, we tested the hypothesis that reptiles maximize net energy gain by postprandial thermal selection. Previous studies have shown that Chinese green tree vipers (Trimeresurus s. stejnegeri) have postprandial thermophily (mean preferred temperature T(p) for males =27.8 degrees C) in a linear thigmothermal gradient when seclusion(More)
UNLABELLED This study deciphers the geographic variations of king cobra (Ophiophagus hannah) venom using functional proteomics. Pooled samples of king cobra venom (abbreviated as Ohv) were obtained from Indonesia, Malaysia, Thailand, and two provinces of China, namely Guangxi and Hainan. Using two animal models to test and compare the lethal effects, we(More)
Phospholipases A2 (PLA2s) were purified from the Trimeresurus stejnegeri venom obtained from various localities in Taiwan and three provinces in China, by gel filtration followed by reversed-phase HPLC. The precise molecular mass and N-terminal sequence of each PLA2 were determined. In addition to the six previously documented PLA2 isoforms of this species,(More)
This study focuses on the structural and functional characterizations of novel venom phospholipases A(2) (PLA(2)s) from Trimeresurus gracilis, an endemic Taiwanese pitviper. The PLA(2) cDNAs were cloned from venom glands and sequenced. The majority of the clones encoded a Glu6-containing PLA(2) (designated as Tgc-E6) whose deduced amino acid sequence(More)
It has been a common belief that snake venom may help in the digestion of its prey, although direct examples and supporting evidence have not been sufficient. To address this, the present study examined whether preinjecting natural amounts of pit viper venom into experimental mice may accelerate their digestion by the snakes or gain energy benefit as(More)
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