Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides.

Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Research Abstract Details 

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Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Abstract Text:

According to the "distorted key" theory as elaborated in a review article years ago (Chou, K.C.: Analytical Biochemistry, 1996, 233, 1-14), the knowledge of the cleavable peptides by SARS-CoV M(pro) (severe acute respiratory syndrome coronavirus main proteinase) can provide very useful insights on developing drugs against SARS. In view of this, the softwares, ZCURVE_CoV 1.0 and ZCURVE_CoV 2.0 (http://tubic.tju.edu.cn/sars/), developed recently for SARS-Coronavirus are used to analyze the 36 complete SARS-Coronavirus RNA sequences in the gene bank NCBI (http://www.ncbi.nlm.nih.gov/) from different sources for protein coding genes, and to search for the cleavage sites of SARS-CoV M(pro) in polyproteins pp1a and pp1ab. A total of 396 cleavage points are found in the 36 SARS-Coronavirus and 11 cleavable octapeptides abstracted from the 396 cleavage sites. The statistical distributions of amino acids for the cleavable octapeptides at the subsites R4, R3, R2, R1, R1', R2', R3' and R4' are calculated. The cleavage-specific positions are on R2, R1 and R1', and the positions R3 and R4 are featured by some certain specificity for SARS-CoV M(pro). The structural characters of amino acid residues around the cleavage-specific positions are discussed. Two most promising octapeptides, i.e., NH(2)-ATLQ downward arrowAIAS-COOH and NH(2)-ATLQ downward arrowAENV-COOH, are selected to be the candidates for chemical modification, converting into the inhibitors of SARS-CoV M(pro). A possible strategy to convert a cleavable octapeptide by SARS enzyme into a drug candidate against SARS is elucidated.

Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Publishing Authors By Initials

For similar proteins: viral proteins research abstracts see: proteins: viral proteins research

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Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Medicinal chemistry (Sh?riqah (United Arab Emirate

VOLUME: 1

Page Numbers: 209-13

Journal Abbreviation:

ISSN: 1573-4064

DAY: 26

MONTH: May

YEAR: 2005

Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 101240303

Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Keywords Mesh Terms:

KEYWORDS: Viral Proteins

MESH TERMS: genetics

Chemical & Substance for Abstract: Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides. Information

Substance Name: Cysteine Endopeptidases

Registry Number: EC 3.4.22.-

Grant and Affiliation Information for Application of bioinformatics in search for cleavable peptides of SARS-CoV M(pro) and chemical modification of octapeptides.

AFFILIATION: Tianjin Normal University, Tianjin Institute of Bioinformatics and Drug Discovery, Tianjin, 300074, China.

Country: United Arab Emirates

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MEDLINETA: Med Chem

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