Continuous production method of adenosine triphosphate and nicotinamide adenine dinucleotide (phosphate) using photosynthetic membrane vesicle

Patent metadata

Field	Value
Publication number	US-9932618-B2
Application number	US-201515113697-A
Country	US
Kind code	B2
Filing date	Jan 26, 2015
Priority date	Jan 27, 2014
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

The present invention relates to a composition for production of photosynthetic light-reaction products comprising photosynthetic membrane vesicles, and a production method for the photosynthetic light-reaction products by using the composition. In addition, the present invention relates to a preparation method for a photosynthetic light-reaction monomer comprising a step of isolating vesicles from the cell membrane of photosynthetic bacteria or algae.

First claim

The invention claimed is:

1. A composition for producing a product of the light-dependent reactions in photosynthesis, comprising a mixture of:
a) a photosynthetic vesicle separated from a membrane, wherein the membrane is the intracytoplasmic membrane (ICM) of a purple non-sulfur bacterium; and
b) a vesicle separated from the thylakoid membrane of a cyanobacterium or alga.

2. The composition of claim 1 , wherein the product of the light-dependent reactions in photosynthesis is a composition comprising adenosine triphosphate (ATP), nicotinamide adenine dinucleotide (NADH) and reduced nicotinamide adenine dinucleotide phosphate (NADPH).

3. The composition of claim 1 , wherein the purple non-sulfur bacterium is a Rhodobacter sp.

4. The composition of claim 1 , wherein the vesicle separated from the thylakoid membrane of the cyanobacterium or alga and the vesicle separated from the intracytoplasmic membrane of the purple non-sulfur bacterium absorb light in mutually different wavelength ranges.

5. The composition of claim 4 , wherein the light in the mutually different wavelength bands is visible light and infrared light.

6. The composition of claim 1 , wherein the thylakoid membrane of the cyanobacterium or alga includes chlorophyll a (Chl a) in a concentration of 1 μg chlorophyll a/ml to 1 mg chlorophyll a/ml.

7. The composition of claim 1 , wherein the vesicle separated from the intracytoplasmic membrane of the purple non-sulfur bacterium includes bacteriochlorophyll a (Bchl a) in a concentration of 1 μg bacteriochlorophyll a/ml to 1 mg bacteriochlorophyll a/ml.

8. The composition of claim 1 , wherein the vesicle separated from the thylakoid membrane of the cyanobacterium or alga and the vesicle separated from the intracytoplasmic membrane of the purple non-sulfur bacterium have a diameter of 1 to 500 nm.

9. A method of producing a product of the light-dependent reactions in photosynthesis using the composition of claim 1 , the method comprising:
a)
preparing a light-dependent reaction-performing unit by placing the composition of claim 1 inside the unit; and
b) applying light to the light-dependent reaction-performing unit.

10. The method of claim 9 , wherein the product of the light-dependent reactions in photosynthesis is one or more light reaction products selected from the group consisting of adenosine triphosphate (ATP), nicotinamide adenine dinucleotide (NADH) and nicotinamide adenine dinucleotide phosphate (NADPH).

11. The method of claim 10 , wherein the NADH is able to be converted into NADPH without additional enzyme treatment.

12. The method of claim 10 , wherein the NADPH is able to be converted into NADH without additional enzyme treatment.

13. The method of claim 9 , wherein the light has a wavelength in the visible or infrared range.

14. A method of manufacturing the photosynthetic light-reaction-performing composition of claim 1 , comprising:
a) separating a vesicle from a thylakoid membrane of a cyanobacterium or alga;
b) separating a vesicle from the intracytoplasmic membrane of a purple non-sulfur bacterium; and
c) combining the vesicles made in (a) and (b).

15. The method of claim 14 , wherein the separating of the vesicle from the membrane includes:
a) preparing a cell lysate by disrupting the cyanobacterium, alga or purple non-sulfur bacterium; and
b) separating the vesicle from the membrane contained in the cell lysate by centrifugation in a sucrose density gradient.

16. The method of claim 15 , wherein the disruption is performed using glass beads or ultrasonic waves.

17. The method of claim 15 , wherein the sucrose density is 5 to 50%.

18. The method of claim 15 , wherein the centrifugation is performed at 50,000 to 500,000 g for 20 minutes to 24 hours.

Assignees

• Univ Sogang Res Foundation

Inventors

• Lee Jeong Kug
• Kim Eui Jin

Classifications

• C12P19/36 Primary

  Dinucleotides, e.g. nicotineamide-adenine dinucleotide phosphate · CPC title

• C12P19/32 Primary

  having a condensed ring system containing a six-membered ring having two N-atoms in the same ring, e.g. purine nucleotides, nicotineamide-adenine dinucleotide · CPC title

• C12P1/04

  by using bacteria · CPC title

• C12N13/00

  Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves · CPC title

• C12N1/12

  Unicellular algae; Culture media therefor (as new plants A01H13/00) · CPC title