Abstract:
The present invention relates to the field of reduction of methane emission in ruminants. Particularly, it relates to the use of a feed composition or a feed additive comprising at least one antibiotic and at least one organic molecule substituted at any position with at least one nitrooxy group for reducing the production of methane emanating from the digestive activities of ruminants, and/or to improve the ruminant performance.
Abstract:
The present invention relates to a method for reducing the production of methane emanating from the digestive activities of a ruminant by using as active compound at least one azido alkanoic acid and/or derivative thereof, which is administrated to the animal together with the feed. The invention also relates to the use of these ingredients in feed and feed additives such as premix, concentrates and total mixedration (TMR) or in the form of a bolus.
Abstract:
The present invention relates to the field of reduction of methane emission in ruminants. Particularly, it relates to the use of a feed composition or a feed additive comprising at least one antibiotic and at least one organic molecule substituted at any position with at least one nitrooxy group for reducing the production of methane emanating from the digestive activities of ruminants, and/or to improve the ruminant performance.
Abstract:
The invention relates to new proteins called alkylcytosine transferases (ACTs) derived from O 6 -alkylguanine-DNA alkyltransferase, and to substrates for ACTs specifically transferring a label to these ACTs and to fusion proteins comprising these. The substrates according of the invention are substituted cytosines of formula (I) wherein R 1 is an aromatic or a heteroaromatic group, or an optionally substituted unsaturated alkyl, cycloalkyl or heterocyclyl group with the double bond connected to OCH 2 -; R 2 is a linker; and L is a label or a plurality of same or different labels. The invention further relates to methods of transferring label L from these substrates of formula (I) to ACTs and ACT fusion proteins. The system of ACT-compound of formula (I) is particularly suitable for double labelling studies together with the known system O 6 -alkylguanine-DNA alkyltransferase (AGT)-benzylguanines.
Abstract:
The present invention relates to a method for reducing the production of methane emanating from the digestive activities of a ruminant and or for improving ruminant animal performance by using, as active compound at least one nitrooxy alkanoic acid and/or derivative thereof, which is administrated to the animal together with the feed. The invention also relates to the use of these compounds in feed and feed additives such as premix, concentrates and total mixed ration (TMR) or in the form of a bolus.
Abstract:
The invention relates to pyrimidines suitable as substrates for O 6 -alkylguanine-DNA alkyltransferases (AGT) of formula (I) wherein R 1 is hydrogen, lower alkyl, halogen, cyano, trifluoromethyl or azido; R 2 is a linker; and L is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from pyrimidines of formula (I) to O 6 -alkylguanine-DNA alkyltransferases (AGT) and AGT fusion proteins.
Abstract:
The invention relates to pyrimidines suitable as substrates for O 6 -alkylguanine-DNA alkyltransferases (AGT) of formula (I) wherein R 1 is hydrogen, lower alkyl, halogen, cyano, trifluoromethyl or azido; R 2 is a linker; and L is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from pyrimidines of formula (I) to O 6 -alkylguanine-DNA alkyltransferases (AGT) and AGT fusion proteins.
Abstract:
The present invention relates to methods of transferring a label from novel substrates to O 6 -alkylguanine-DNA alkyltransferases (AGT) and O 6 -alkylguanine-DNA alkyltransferase fusion proteins, and to novel substrates suitable in such methods. Proteins of interest are incorporated into an AGT fusion protein, the AGT fusion protein is contacted with particular AGT substrates carrying a label, and the AGT fusion protein is detected and optionally further manipulated using the label in a system designed for recognising and/or handling the label. The particular AGT substrates used in the method of the invention are O 6 -substituted guanine derivatives or related nitrogen containing hydroxy-heterocycles and their sulfur analogs wherein the O 6 -substituent is an activated methyl derivative suitable for transfer from guanine or the corresponding heterocycle to AGT, and further carrying a label or a plurality of same or different labels. The invention relates also to the novel AGT substrates as such, to methods of manufacture of such novel substrates, and to intermediates useful in the synthesis of such novel AGT substrates.
Abstract:
The present invention relates to molecular probes of the formula (I) L1-R1-L-A-X as defined herein that allow for the observation of the catalytic activity of a selected capase, cathepsin, MMP and carboxypeptidase in in vitro assays, in cells or in multicellular organisms, a method for their preparation and the use thereof.
Abstract:
The invention relates to substrates for O 6 -alkylguanine-DNA alkyltransferases (AGT) of formula R 1 -A-X-CH 2 -R 3 -R 4 -L 1 , wherein A is a group recognized by AGT as a substrate, X is oxygen or sulfur, R 1 is a group -R 2 -L 2 or a group R 5 , R 2 and R 4 are, independently of each other, a linker, R 3 is an aromatic or a heteroaromatic group, or an optionally substituted unsaturated alkyl, cycloalkyl or heterocyclyl group with the double bond connected to CH 2 , R 5 is arylmethyl or heteroarylmethyl or an optionally substituted cycloalkyl, cycloalkenyl or heterocyclyl group, L 1 is a label, a plurality of same or different labels, a bond connecting R 4 to A forming a cyclic substrate , or a further group -R 3 CH 2 -X-A-R 1, and L 2 is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from these substrates to O 6-