Biotin biosynthesis: synthesis and biological evaluation of the putative intermediate thiols
作者:Andree Marquet、Francois Frappier、Georges Guillerm、Michel Azoulay、Dominique Florentin、Jean Claude Tabet
DOI:10.1021/ja00059a006
日期:1993.3
biotin biosynthesis, the sulfuur insertion into dethiobiotin should involve a thiol as intermediate. The three possible thiols have been synthesized and their biological activity was evaluated: the primary thiol 10 labeled with [ 35 S] or [ 34 S] or with deuterium was transformed into biotin by resting cells of Bacillus sphaericus without loss of the label. Hence, it is a possible intermediate. Interestingly
Biomolecular Labelling Using Multifunctional Biotin Analogues
申请人:Thomas Neil R.
公开号:US20120083599A1
公开(公告)日:2012-04-05
Novel biotin analogues, such as 2-Azidobiotin, comprising the ureido ring of natural biotin with the thiophene ring, optionally modified, and a modified sidechain having a functional end group, preferably selected from the group consisting of a carboxylic acid, amine, alcohol, thiol, aldehyde and a halide, and at least one bio-orthogonally reactive chemical group located elsewhere in the sidechain. The analogues are used for labelling target structures and biomolecules, such as peptides and proteins in vitro or in vivo.
[EN] BIOMOLECULAR LABELLING USING MULTIFUNCTIONAL BIOTIN ANALOGUES<br/>[FR] MARQUAGE BIOMOLÉCULAIRE UTILISANT DES ANALOGUES MULTIFONCTIONNELS DE BIOTINE
申请人:UNIV NOTTINGHAM
公开号:WO2010106347A8
公开(公告)日:2011-12-22
Expanding the Substrate Tolerance of Biotin Ligase through Exploration of Enzymes from Diverse Species
作者:Sarah A. Slavoff、Irwin Chen、Yoon-Aa Choi、Alice Y. Ting
DOI:10.1021/ja076655i
日期:2008.1.30
Technologies that enable the site-specific conjugation of chemical probes onto proteins are extremely useful for applications in cell biology and proteomics. We cloned, expressed, and purified biotin ligases from nine different species and screened them for the ability to ligate unnatural analogues of biotin onto the human p67 biotin acceptor domain. We discovered that the biotin ligases of Saccharomyces cerevisiae (yeast) and Pyrococcus horikoshii could accept alkyne and azide derivatives of biotin, respectively. HPLC, gel-shift, and mass spectrometry assays confirmed that these ligation reactions were ATP-and enzyme-dependent, as well as site-specific. We used the P. horikoshii-catalyzed azide ligation reaction to site-specifically introduce a phosphine probe onto p67 using the Staudinger ligation. These new ligation reactions demonstrate the differential substrate specificities of biotin ligases from different organisms and open the door to novel protein labeling applications.
EVEN, L.;FLORENTIN, D.;MARQUET, A., BULL. SOC. CHIM. FR.,(1990) N, C. 758-768