The present invention relates to antimicrobial peptides derived from Romo1 protein, and provides various peptides having the amino acid sequence of the α-helix 2 region of the Romo1 protein and an antibacterial composition containing each of the peptides, as a result of confirming that the peptides have antibacterial activity against gram-positive, gram-negative and multidrug-resistant bacteria. The Romo1-derived peptides and variants thereof have better bactericidal capability against various types of bacteria and multidrug-resistant bacteria than existing antibiotics and antibiotic peptides, and have antibacterial activity against various bacteria in blood vessels, and are novel antibiotics that may be provided as substances for the prevention or treatment of a wide range of bacterial infectious diseases. A composition containing the antimicrobial peptide of the present invention is suitable for various applications, including drugs, quasi-drugs, food and feed additives, pesticides and cosmetic additives, to prevent or treat infectious diseases.

The present invention is directed to a transgenic bacterium including at least one polynucleotide encoding a Bacillus thuringiensis israelensis (Bti) proteinaceous toxin. Further provided are compositions comprising the bacterium of the invention as well as methods of using same, such as for controlling a pest insect.

Compositions and methods are provided for use in controlling souring and corrosion causing prokaryotes, such as SRP, by treating oil and gas field environments or treatment fluids with a newly identified bacterial strain ATCC Accession No. PTA-124262 as a self-propagating whole cell that produces an anti-SRP bacteriocin in situ. In another aspect, the methods use one or more toxic peptides or proteins isolated therefrom in methods to control unwanted prokaryotic growth in these environments.

Compositions and methods for controlling pests are provided. The methods involve transforming organisms with a nucleic acid sequence encoding an insecticidal protein. In particular, the nucleic acid sequences are useful for preparing plants and microorganisms that possess insecticidal activity. Thus, transformed bacteria, plants, plant cells, plant tissues and seeds are provided. Compositions are insecticidal nucleic acids and proteins of bacterial species. The sequences find use in the construction of expression vectors for subsequent transformation into organisms of interest including plants, as probes for the isolation of other homologous (or partially homologous) genes. The pesticidal proteins find use in controlling, inhibiting growth or killing Lepidopteran, Coleopteran, Dipteran, fungal, Hemipteran and nematode pest populations and for producing compositions with insecticidal activity.

Pesticidal proteins exhibiting toxic activity against Coleopteran, Lepidopteran, Hemipteran, and Thysanopteran pest species are disclosed, and include, but are not limited to, TIC6280, TIC6281, TIC6282, TIC6283, TIC8808, TIC9480, TIC9257, TIC7106, TIC7017, TIC7107, TIC7108, TIC7109, TIC7110, TIC7111, TIC7589, TIC9258, and TIC9259. DNA constructs are provided which contain a recombinant nucleic acid sequence encoding the pesticidal proteins provided. Transgenic plants, plant cells, seed, and plant parts resistant to Lepidopteran, Coleopteran, Hemipteran and Thysanopteran infestation are provided which contain recombinant nucleic acid sequences encoding the disclosed pesticidal proteins. Methods for detecting the presence of the recombinant nucleic acid sequences or the protein of the present invention in a biological sample, and methods of controlling Coleopteran, Lepidopteran, Hemipteran, and Thysanopteran species pests using the disclosed pesticidal proteins are also provided.

A process for the linear synthesis of a gram-positive class II bacteriocin or a variant thereof is disclosed herein. The process comprises the stepwise addition of selected amino acids to a solid support; pseudoproline positioning and reopening; and cleavage of the gram-positive class II bacteriocin or the variant thereof from the solid support to provide a linear gram-positive class II bacteriocin or variant thereof; and in situ disulfide bond formation. Various applications and uses of the synthetic bacteriocins are also disclosed. The synthetic process can also be used to synthesize variants of bacteriocins by the selective substitution of one or more amino acids and/or additions and/or deletions of selected amino acids.

A process for the linear synthesis of a gram-positive class II bacteriocin or a variant thereof is disclosed herein. The process comprises the stepwise addition of selected amino acids to a solid support; pseudoproline positioning and reopening; and cleavage of the gram-positive class II bacteriocin or the variant thereof from the solid support to provide a linear gram-positive class II bacteriocin or variant thereof; and in situ disulfide bond formation. Various applications and uses of the synthetic bacteriocins are also disclosed. The synthetic process can also be used to synthesize variants of bacteriocins by the selective substitution of one or more amino acids and/or additions and/or deletions of selected amino acids.

The present invention provides a synergistic composition of a nematicide comprising of a nematicidal peptides derived from CED-4 protein sequence comprising of at least two peptides. The nematicidal peptides individually show 100% nematicidal activity at a concentration of 1 mg/ml, whereas, the combination of at least two peptides in a ratio of 1:1 shows 100% nematicidal activity at concentration as low as 0.8 mg/ml bringing a synergistic effect. This synergistic nematicidal composition is highly economical as it requires 20% less peptide concentration for 100% activity, moreover the composition is environmentally safe and non-toxic to humans and animals.

The present invention provides a synergistic composition of a nematicide comprising of a nematicidal peptides derived from CED-4 protein sequence comprising of at least two peptides. The nematicidal peptides individually show 100% nematicidal activity at a concentration of 1 mg/ml, whereas, the combination of at least two peptides in a ratio of 1:1 shows 100% nematicidal activity at concentration as low as 0.8 mg/ml bringing a synergistic effect. This synergistic nematicidal composition is highly economical as it requires 20% less peptide concentration for 100% activity, moreover the composition is environmentally safe and non-toxic to humans and animals.

Stabilized liquid agrochemical compositions are provided that comprise flowable, aqueous dispersion concentrates comprising a) a continuous aqueous liquid phase; b) at least one dispersed, solid phase comprising a dispersion of polymer particles having a mean particle size of at least one micron, wherein the outside surfaces of the particles comprise a colloidal solid material and wherein the particles have at least one agrochemically active ingredient distributed therein, optionally a non-porous particulate mineral that acts as a diffusion barrier to slow the release of the active ingredient, and optionally at least one non-cross-linkable mobile chemical such that the extraction of this chemical from the disperse phase renders it porous in a manner that allows the active ingredient to diffuse out. The colloidal solid is used to stabilize the polymerizable resin in an emulsion state during preparation. In one embodiment, the agrochemically active ingredient is a solid and is distributed within the dispersed solid phase or is a liquid and is distributed within the dispersed solid phase. The compositions of the invention can be used directly or with dilution to combat pests or as plant growth regulators.