Amidohydrolase Process: Expanding the use of l-N-carbamoylase/N-succinyl-amino acid racemase tandem for the production of different optically pure l-amino acids
作者:Pablo Soriano-Maldonado、María José Rodríguez-Alonso、Carmen Hernández-Cervantes、Ignacio Rodríguez-García、Josefa María Clemente-Jiménez、Felipe Rodríguez-Vico、Sergio Martínez-Rodríguez、Francisco Javier Las Heras-Vázquez
DOI:10.1016/j.procbio.2014.04.013
日期:2014.8
-carbamoyl-derivatives. The bienzymatic system was equally efficient in converting aromatic and aliphatic substrates. Total conversion was also achieved using high substrate concentrations (100 and 500 mM) with no noticeable inhibition. This “Amidohydrolase Process” enables the production of both natural and non-natural l -amino acids from a broadsubstrate spectrum with yields of over 95%.
[EN] UNIVERSAL ABT COMPOUNDS AND USES THEREOF<br/>[FR] COMPOSÉS ABT UNIVERSELS ET LEURS UTILISATIONS
申请人:KLEO PHARMACEUTICALS INC
公开号:WO2019023501A1
公开(公告)日:2019-01-31
Among other things, the present disclosure provides compounds comprising universal antibody binding moieties and targeting moieties. In some embodiments, provided compounds recruit various types of antibodies to diseased cells such as cancer cells, and induce immune activities to kill such cells. Provided technologies are useful for treating various diseases including cancer.
An object of the present invention is to provide methods of discovering drugs effective for tough targets, which have conventionally been discovered only with difficulty. The present invention relates to novel methods for cyclizing peptide compounds, and novel peptide compounds and libraries comprising the same, to achieve the above object.
CYCLIC PEPTIDE COMPOUND HAVING HIGH MEMBRANE PERMEABILITY, AND LIBRARY CONTAINING SAME
申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:EP3636807A1
公开(公告)日:2020-04-15
The present inventors have found that when screening for cyclic peptide compounds that can specifically bind to a target molecule, the use of a library including cyclic peptide compounds having a long side chain in the cyclic portion can improve the hit rate for cyclic peptide compounds that can specifically bind to the target molecule. Meanwhile, the present inventors have found that tryptophan and tyrosine residues, which have conventionally been used in oral low molecular-weight pharmaceuticals and are amino acid residues having an indole skeleton or a hydroxyphenyl group, are not suitable for peptides intended to attain high membrane permeability.
Remote Binding Energy in Antibody Catalysis: Studies of a Catalytically Unoptimized Specificity Pocket
作者:Herschel Wade、Thomas S. Scanlan
DOI:10.1021/ja983017e
日期:1999.2.1
Binding interactions remote from the hydrolytic reaction center have been probed with substrate and phosphonate transition state analogues to understand how these types of interactions are used to promote catalysis in the 17E8 system, We find that the hapten-generated recogniton pocket in 17E8 has properties that are analogous to those of specificity pockets in enzymes, pie have also found that there are specific requirements to form catalytically productive interactions between the side chain and the recognition pocket including conformation, size, and geometry. An additional requirement includes Favorable simultaneous interactions between the side chain and binding packet along with favorable interactions with the oxyanion hole. The 17E8 side chain recognition pocket seems to be less catalytically efficient than analogous pockets in enzymatic systems. The apparent binding energy gained from the methylene-packet interactions in the 17E8 system is significantly smaller than those observed in natural enzymes. Furthermore, 17E8 does not use specific interactions in the recognition pocket to significantly affect catalytic turnover (k(cat)) which is thought to be a trait of an unoptimized catalyst. Analysis of the crystal structure of the 17E8,hapten complex has allowed for the identification of differences between the active sites of 17E8; and several proteases, The identified differences give insight to the sources of the inefficient use of binding energy.