摘要:
The invention provides methods and compositions for azide tagging of biomolecules. In one embodiment of the invention, proteins are tagged by metabolic incorporation of prenylated azido-analog substrates. Examples of such analogs are azido famesyl diphosphate and azido famesyl alcohol. The azido moiety in the resulting modified proteins provides an affinity tag, which can be chemoselectively captured by an azide-specific conjugation reaction, such as the Staudinger reaction, using a phosphine capture reagent. When the capture agent is biotinylated, the resulting conjugates can be detected and affinity-purified by streptavidin-linked-HRP and streptavidin-conjugated agarose beads, respectively. The invention allows detection and isolation of proteins with high yield, high specificity, and low contamination without harsh treatment of proteins.
摘要:
A hydroxyeicosenoic acid analog represented by the following Formula (I), the bond ≡ represents a cis-vinylene group or an ethynylene group; Y represents CH2, O or S(O)p wherein p is 0, 1 or 2; m represents an integer of 1 to 4 inclusive; n represents an integer of 0 to 3 inclusive; the sum of m and n is an integer of 3 to 7 inclusive; R1 represents a C1-4 alkyl group or a C3-8 cycloalkyl group; R2 represents a hydrogen atom or a methyl group; R3 represents COR4, a nitrile group, a halogen atom, a tetrazole group or a thiazolidinedione group; R4 represents OR6, NHR6, N(OH)R6, NHSO2R5, glycerol or functionalized glycerols; R5 represents a C1-15 alkyl group, a C6-10 aryl group or a C7-14 aryl group substituted with alkyl groups, halogens or amino groups; R6 represents a hydrogen, a C1-10 alkyl group or a C1-10 alkyl group substituted with a hydroxyl group, or a pharmaceutically acceptable salt or hydrate thereof. The compounds of the present invention are useful as an elastase release inhibitor.
摘要翻译:由下式(I)表示的羟基二十碳烯酸类似物,键=表示顺式亚乙烯基或亚乙炔基; Y表示CH 2,O或S(O)p,其中p为0,1或2; m表示1〜4的整数, n表示0〜3的整数, m和n的和为3〜7的整数, R 1表示C 1-4烷基或C 3-8环烷基; R 2表示氢原子或甲基; R 3表示COR 4,腈基,卤素原子,四唑基或噻唑烷二酮基; R 4表示OR 6,NHR 6,N(OH)R 6,NHSO 2 R 5,甘油或官能化甘油; R 5代表C1-15烷基,C6-10芳基或被烷基,卤素或氨基取代的C7-14芳基; R 6表示氢,C 1-10烷基或被羟基取代的C 1-10烷基,或其药学上可接受的盐或水合物。 本发明的化合物可用作弹性蛋白酶释放抑制剂。
摘要:
A hydroxyfattysulfonic acid analog represented by Formula (I): wherein X is an ethylene group, a vinylene group or an ethynylene group; Y is an ethylene group, a vinylene group, an ethynylene group, OCH2 or S(O)pCH2 wherein p is 0, 1 or 2; m is an integer of 1 to 5 inclusive; n is an integer of 0 to 4 inclusive; R1 is a C1-8 alkyl group, a C3-8 cycloalkyl group, a C1-4 alkyl group substituted with a C3-8 cycloalkyl group, a C1-4 alkyl group substituted with an aryl group or a C1-4 alkyl group substituted with an aryloxy group; R2 is a hydrogen atom or a methyl group; R1 and R2 together with the carbon atom to which they are attached may form a C3-8 cycloalkyl group; R3 is a hydrogen atom or a C2-8 acyl group; R4 is OR5 or NHR6, wherein R5 is a hydrogen atom, a C1-4 alkyl group, an alkali metal, an alkaline earth metal or an ammonium group and R6 is a hydrogen atom or a C1-4 alkyl group; or a pharmaceutically acceptable salt or a hydrate thereof. The compounds of the present invention are useful as an elastase release inhibitor.
摘要翻译:由式(I)表示的羟基脂肪磺酸类似物:其中X是亚乙基,亚乙烯基或亚乙炔基; Y是亚乙基,亚乙烯基,亚乙炔基,OCH 2或S(O)pCH 2,其中p是0,1或2; m为1〜5的整数, n为0〜4的整数, R 1是C 1-8烷基,C 3-8环烷基,被C 3-8环烷基取代的C 1-4烷基,被芳基取代的C 1-4烷基或C 1-4 被芳氧基取代的烷基; R 2是氢原子或甲基; R 1和R 2与它们所连接的碳原子一起可以形成C 3-8环烷基; R 3是氢原子或C 2-8酰基; R 4是OR 5或NHR 6,其中R 5是氢原子,C 1-4烷基,碱金属,碱土金属或铵基,R 6是 氢原子或C 1-4烷基; 或其药学上可接受的盐或其水合物。 本发明的化合物可用作弹性蛋白酶释放抑制剂。
摘要:
While the identification of acetylated lysine residues on proteins is well-known, the modification of lysine residues through propionylation and butyrylation is not very well understood. A method for the identification and mapping of propionylated and butyrylated lysine residues has been developed. Anti-acetyllysine antibody, normally used to affinity purify a protein mixture based on the presence of acetylated lysine, can also be used to affinity purity proteins having propionylated and butyrylated lysine residues due to the structural similarity. The method involves searching protein databases to locate mass spectrometry datasets for those proteins purified by anti-acetyllysine antibody. The located spectra are manually reviewed to identify those peptides having propionyllysine and butyryllysine residues. These identified peptides are synthesized, with the lysine modifications added at the appropriate positions. The synthesized proteins are then analyzed with mass spectrometry and the resultant spectra are compared to those located in the protein databases to confirm the location of the lysine modifications.