Provided are a novel compound, preparing method thereof, and use thereof as inhibitor of histone demethylase. The compound represented by Chemical Formula 1 has activity which inhibits histone demethylase and thus is capable of specifically and effectively inhibit activity of histone demethylase.

The present invention relates to an efficient silicate solubilizing Streptomyces sp. CS13-6 with a preservation No. of CGMCC No. 25523, which has high capabilities of silicate solubilization, dissolving phosphorus and potassium, fixing nitrogen, and producing siderophore and IAA. The strain can grow well at pH 5-10 and 20-40 C. In addition, it can grow normally when the NaCl content is 4%, and has high acid, alkali and salt resistance and wide temperature adaptability. The present invention further discloses use of the strain in promoting plant growth, improving soil quality and the like. The strain can be used as an active ingredient for preparation of biological silicon fertilizers, soil conditioners, etc., so as to effectively improve the nutrient structure in the soil, improve soil quality, reduce the use of chemical fertilizers, and achieve a purpose of improving quality and increasing yield.

The embodiment of the present invention discloses Hangtaimycin derivatives and their preparation and application. Hangtaimycin derivatives are obtained by fermentation of Streptomyces spectabilis CCTCC M2017417 and its genetically knockout mutant strain in SFMR medium, with further isolation, purification, and alcoholysis. Through screening, Hangtaimycin derivatives showed excellent anti-inflammatory and analgesic, anti-tumor, liver injury protection, cell membrane protection, and drug addiction prevention activities, providing new drug leads for developing related drugs.

Provided in the present invention are a polar marine-derived macrocyclic lactam compound, and a preparation method therefor and the use thereof. Provided in the present invention is a macrocyclic lactam compound as represented by formula 1 or a pharmaceutically acceptable salt thereof. The compound has a novel structure and good inflammation inhibitory activity, and provides a new candidate compound for developing an anti-inflammatory drug.

Provided are a novel streptomyces filamentosus strain with improved daptomycin productivity, and a method for producing daptomycin using the same.

The present invention relates to a recombinant microorganism expressing avermectin or analogues thereof and construction method thereof, and also relates to a method of producing avermectin or analogues thereof using the recombinant microorganism, and avermectin or analogues thereof obtained using the method. In addition, the present invention further relates to uses of the avermectin or analogues thereof as insecticides. Using the recombinant microorganism of the present invention to produce avermectin or analogues thereof has numerous advantages, for example comprising at least one of the following: good stability, high yield, simple process, environmentally friendly, and greatly saving of production costs.

The present invention relates to a synthetic promoter operably linked to a daptomycin biosynthetic gene cluster; a gene construct for producing daptomycin in which the synthetic promoter and a daptomycin biosynthetic gene cluster are operably linked; a recombinant expression vector for producing daptomycin containing the genetic construct; and a transformant for producing daptomycin that has been transformed with the recombinant expression vector, wherein the synthetic promoter can increase the transcriptional activity of the daptomycin biosynthetic gene cluster, and the transformant that has been transformed with the recombinant expression vector containing the synthetic promoter and the daptomycin biosynthetic gene cluster can be effectively used in the field of medicine and pharmacy by enabling mass production of daptomycin.

The application concerns methods for improving a plant growth feature, such as biomass, number of tillers per plant, and/or yield, of plants using certain bacteria or agricultural active compositions comprising the bacteria. Plants and plant parts treated with or heterologously disposed with said bacteria or compositions are also disclosed. Further, novel bacterial strains, and populations and agricultural active compositions comprising the same are provided.

Streptomyces sp. MTCC-25420 and Streptomyces sp. MTCC-25512 isolated from the Shivalik region of India, has been demonstrated for tetrahydroanthracene antibiotics including setomimycin production. Combination of specific physico-chemical conditions have led to the antibiotic complex formation (upto 5.0 g/L) in 2-10 days of fermentation with maximum production at 4-8 days in shake flask as well as 5 L to 500 L stirred tank bioreactors using modified production media in combination with additional carbon/nitrogen/minerals and elicitations with yields upto 800 mg/L of are 9,9 bianthracene antibiotic setomimycin. Setomimycin significantly abrogated cancer cell proliferation and inhibited cancer cell migration and invasion in highly metastatic cancer cells (MiaPaca-2, MCF-7, HT-29 and HCT-116) of Pancreatic, Breast and Colorectal origin by down regulating ERK and MEK proteins which are the major regulators of cell proliferation, differentiation and apoptosis. Interestingly setomimycin upregulated pro-apoptotic protein Par-4 and downregulated anti-apoptotic protein BCL-2 in Colon as well as breast cancer cells HCT-116 and MCF-7 respectively. Strong affinity of setomimycin towards MEK protein has been confirmed by molecular docking studies and Western blot analysis.

The present invention includes modified and unmodified microbes, compositions comprising these microbes, and methods of using these microbes and/or compositions for enhancing plant health, plant growth plant yield and/or drought tolerance. This disclosure also provides non-naturally occurring plant varieties that are artificially infected with microbes descried herein, as well as seed, reproductive tissue, vegetative tissue, regenerative tissues, plant parts, or progeny thereof.