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42 results about "Thylakoid" patented technology

A thylakoid is a membrane-bound compartment inside chloroplasts and cyanobacteria. They are the site of the light-dependent reactions of photosynthesis. Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Chloroplast thylakoids frequently form stacks of disks referred to as grana (singular: granum). Grana are connected by intergranal or stroma thylakoids, which join granum stacks together as a single functional compartment.

Compositions And Methods Of A Phosphatidic Acid Binding Protein

TGD2 proteins of Arabidopsis are proposed to be a substrate binding component of a lipid transfer complex in the inner chloroplast envelope membrane. Loss of function of this protein or other components of this complex may disrupt the endoplasmic reticulum (ER)-pathway of thylakoid lipid biosynthesis. In one embodiment, the present invention contemplates a minimal binding domain capable of specifically binding phosphatidic acid. Alternatively, the minimal binding domain may further comprise accessory binding domains that, in combination, create a complete TGD2 phosphatidic acid binding domain. Consequently, phosphatidic acid may be quantitatively detected from samples as described in the methods herein.
Owner:BOARD OF TRUSTEES OPERATING MICHIGAN STATE UNIV

Preparation method of thylakoid-containing artificial cells and photosynthesis simulating method

The invention relates to a preparation method of thylakoid-containing artificial cells and a photosynthesis simulating method, and belongs to the fields of biotechnology, biochemistry and synthetic biology. The method comprises the following steps of extracting thylakoid particles from fresh spinach leaves, and storing the thylakoid particles in a buffer solution for use; smearing a phospholipid solution onto an ITO glass electrode; after the solvent volatilization, forming a layer of phospholipid membrane; fixing a polytetrafluoroethylene framework by vacuum grease; adding liquid phases intothe polytetrafluoroethylene framework; applying alternating current onto the ITO glass electrode for preparing a GUV solution; mixing the GUV solution and a thylakoid solution; preparing the thylakoid-containing artificial cells. The thylakoid-containing artificial cells are prepared through the enlightenment of the natural plant cell structure and function; the model can realize the optical driveelectron transfer process under the artificial sunlight irradiation. Through the model building, the attributes of chloroplasts in nature are doubly simulated from the structure and the function. Thecomplicated cells realize simplified research, so that the development and the progress of the biomimetic chemistry are promoted.
Owner:HARBIN INST OF TECH

Extracting and purifying method of chlorella lutein protein complex

The invention relates to an extracting and purifying method of a chlorella lutein protein complex. The extracting and purifying method comprises the following steps: carrying out wall-breaking treatment onto chlorella by utilizing an ultrasonic crushing method; carrying out solubilization onto chromoprotein on a thylakoid membrane by adopting a surfactant; and purifying the lutein protein complex by adopting ammonium sulfate classification and sedimentation, ion exchange chromatography and gel filtration chromatography. A pigment composition of the complex is analyzed by utilizing full-wavelength scanning and high performance liquid chromatography, wherein the obtained lutein protein complex has remarkable ABTS radical-scavenging activity. The extracting and purifying method disclosed by the invention can ensure structure and function stability of the complex by utilizing surfactant solubilizing chromoprotein; purified lutein protein complex obtained by column chromatography is simple in purifying process and convenient to produce and expand; and the lutein existing in the form of the complex not only improves stability, but also keeps antioxidant activity.
Owner:FUZHOU UNIVERSITY

Composite material for simultaneously generating oxygen and active oxygen under near-infrared light excitation, and preparation method and application of composite material

The invention relates to a composite material for simultaneously generating oxygen and active oxygen under near-infrared light excitation, and a preparation method and application of the composite material, and belongs to the technical field of composite materials. The technical problem that an oxygen generation manner during the tumor photodynamic therapy in the prior art cannot simultaneously realize the precise matching of oxygen and a photosensitizer both in space and time, and the PDT efficiency is greatly affected due to rapid oxygen consumption and slow spatial transmission is solved. The composite material of the invention is composed of up-conversion nanoparticles and thylakoid membranes. The invention also provides a preparation method and application of the composite material. The up-conversion nanomaterial in the composite material of the invention can convert near-infrared light (808-980 nm) into red light (-660 nm), the red light is used to excite a light system I and a light system II in the thylakoid membranes, photo-generated holes generated by the light system I are used to react with water to generate oxygen, the light systems I and II transfer energy to oxygen molecules to generate singlet oxygen, and thereby the tumor photodynamic therapy efficiency is improved.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Hypocrellin composite nanoparticle and preparation method thereof

PendingCN114209828AIncreased levels of singlet oxygenPhotodynamic therapyNanomedicineUltrasound - actionSinglet oxygen
The invention provides hypocrellin composite nano particles and a preparation method thereof.The nano particles are composed of hypocrellin nano particles and nano capsule-like membranes coating the surfaces of the hypocrellin nano particles, and the preparation method comprises the steps that water-insoluble hypocrellin is dissolved in a dimethyl sulfoxide solution, then the solution is dropwise added into a phosphate buffer solution, and the hypocrellin nano particles are obtained. Performing ultrasonic dispersion treatment and dialysis, or dispersing the hypocrellin in a poloxamer aqueous solution, and performing ultrasonic dispersion to obtain a hypocrellin nanoparticle suspension; then modifying the surface of the hypocrellin nanoparticle suspension with a suspension of a thylakoid membrane extracted from green plant cells, or modifying the surface of the hypocrellin nanoparticle suspension with a suspension of a thylakoid membrane extracted from microalgae cells, and extruding the hypocrellin nanoparticle suspension through a microfiltration membrane; the composite nanoparticles have the capability of producing oxygen through photosynthesis under illumination, and can provide oxygen for the photodynamic effect or the sonodynamic effect of the hypocrellin, so that the level of singlet oxygen produced by the hypocrellin under the action of illumination or ultrasonic waves is improved.
Owner:TONGJI UNIV

Composite material for simultaneous generation of oxygen and active oxygen under near-infrared light excitation, preparation method and application thereof

The invention relates to a composite material for simultaneously generating oxygen and active oxygen under near-infrared light excitation, a preparation method and application thereof, and belongs to the technical field of composite materials. Solve the technical problems in the prior art that the oxygen production method in the photodynamic therapy of tumors cannot realize the precise matching of oxygen and photosensitizer in space and time at the same time, and the rapid oxygen consumption and slow space transfer greatly affect the PDT efficiency. The composite material of the invention is composed of up-converting nanoparticles and thylakoid membranes. The invention also provides the preparation method and application of the composite material. The composite material of the present invention can convert near-infrared light (808-980nm) into red light (~660nm) in the mid-up conversion nanomaterial, which is used to excite photosystem I and photosystem II in thylakoid membranes, and photosystem I produces Photogenerated holes are used to react with water to generate oxygen, and photosystems I and II transfer energy to oxygen molecules and generate singlet oxygen, thereby improving the efficiency of tumor photodynamic therapy.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Method for inhibiting harmful algae by applying perylenequinone compound

The invention discloses a method for inhibiting harmful algae by applying perylenequinones compounds, and belongs to the technical field of environmental application. The perylenequinone compound provided by the invention can obviously inhibit the growth of harmful algae in the absence of illumination or visible illumination radiation, so that the cell surface is unsmooth and the cell morphology is incomplete; cell membranes, cell walls and thylakoid structures can be destroyed; degrading fatty acid in a cyanobacteria cell membrane; the content of chlorophyll a is degraded; growth of blue-green algae in the actual environment of the Taihu Lake is According to the method, the perylenequinone compound is used as the algistat for broad-spectrum inhibition of blue-green algae, and the application prospect is very wide.
Owner:JIANGNAN UNIV
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