Abstract:
:Three small serum proteins (SSP-1, -2, and -3), with molecular masses of 6.5-10kDa, were isolated from Habu (Trimeresurus flavoviridis) serum, and the amino acid sequences were determined by protein and cDNA analysis. Despite only limited sequence identity to any mammalian prostatic secretory protein of 94 amino acids (PSP94), all of the Cys residues in these SSPs were well conserved. SSPs are the first PSP94 family proteins to be identified in reptiles. SSP-1 and -3 weakly inhibited the proteolytic activity of a snake venom metalloproteinase. On the other hand, SSP-2 formed a tight complex with triflin, a snake venom-derived Ca(2+) channel blocker that suppresses the smooth muscle contraction. This suggests a role for SSP-2 in the self defense system of venomous snakes.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Aoki N,Sakiyama A,Deshimaru M,Terada Sdoi
10.1016/j.bbrc.2007.05.091subject
Has Abstractpub_date
2007-07-27 00:00:00pages
330-4issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(07)01057-1journal_volume
359pub_type
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journal_title:Biochemical and biophysical research communications
pub_type: 杂志文章
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journal_title:Biochemical and biophysical research communications
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