Glucose-1-Phosphate (G1P) Colorimetric Assay Kit - sufficient for 100colorimetrictests, high purity

Cat. No.: G486258

Descripción general

Glycogen and starch generate glucose-1-phosphate (1PG/G1P) during the process of phosphohydrolysis. This reagent kit provides a simple, sensitive, and rapid determination method: Glucose-1-phosphate (1PG/G1P) is reduced from NADP+to NADPH by the sequential action of phosphoglucose mutase and phosphoglucose dehydrogenase. The content of glucose-1-phosphate (1PG/G1P) in the sample can be calculated by detecting the increase in NADPH at 340nm.
Composition and preparation of reagent kit:

Reagent name	Specifications	Save requirements	Remarks
Extraction solution	Liquid 100mL x 1 bottle	4 ℃ storage	/
Reagent 1	Powder mg x 1 tube	4 ℃ storage	Shake or centrifuge the reagent a few times before use to make it fall to the bottom, then dissolve it in 1.2mL of distilled water for later use.
Reagent 2	Powder mg x 1 tube	Store at -20 ℃	Shake or centrifuge the reagent a few times before use to make it fall to the bottom, then dissolve it in 1.2mL of distilled water for later use.
Reagent 3	Liquid 16mL x 1 bottle	4 ℃ storage	/
Reagent 4	Powder mg x 1 tube	Store at -20 ℃	Shake or centrifuge the reagent a few times before use to make it fall to the bottom, then add 1 Dissolve 1mL of distilled water for later use.
TRC	1 powder	4 ℃ storage	Only used to identify whether the reagents in the kit are normal (not involved in result calculation). Usage: Use a pre standard tube (GIP) to shake the powder a few times until it falls to the bottom, then add 0.5mL of distilled water and mix well to dissolve Dilute GIP with a concentration of 4mg/mL and then dilute it four times to 1mg/mL for later use: follow the instructions in the sample addition table for the measuring tube operation

Required instruments and supplies:

ELISA reader, 96 well plate, desktop centrifuge, adjustable pipette, mortar, ice and distilled water.

Determination of glucose-1-phosphate (1PG/G1P) content:

1. Sample preparation

① Organizational sample:

Suggest weighing around 0 1g of tissue, add 1mL of extraction solution, and homogenize in an ice bath. Centrifuge at 12000rpm, 4 ℃ for 10 minutes, take the supernatant, and place it on ice for testing.

[Note]: If the sample size is increased, it can be extracted in a ratio of tissue mass (g) to extraction solution volume (mL) of 1:5-10.

② Bacterial/cellular samples:

Collect bacteria or cells into a centrifuge tube first, centrifuge and discard the supernatant; Take about 5 million bacteria or cells and add them to 1mL

Extract solution, sonicate bacteria or cells (ice bath, power 200W, sonication for 3s, interval 10s, repeated 30 times); Centrifuge at 12000rpm at 4 ℃ for 10 minutes, take the supernatant, and place it on ice for testing.

[Note]: If the sample size is increased, extraction can be carried out in a ratio of 500-1000:1 of bacteria/cell quantity (104) to extraction solution (mL).

③ Liquid sample: direct detection.

2. Machine testing:

① Preheat the enzyme-linked immunosorbent assay (ELISA) reader for at least 30 minutes and adjust the wavelength to 340nm.

② Thaw the reagent to room temperature (25 ℃);

③ Add reagents to the 96 well plate in the following order according to the table:

② Thaw the reagent to room temperature (25 ℃);

③ Add reagents to the 96 well plate in the following order according to the table:

Reagent name (μL）	Measurement tube	Blank tube (only done once)
Reagent 1	10	10
Reagent 2	10	10
Reagent 3	150	170
Sample	20	/

Mix well, incubate at room temperature (25 ℃) for 20 minutes, and then read A1 at 340nm (if the A value continues to increase, the incubation time needs to be extended until the absorbance value remains unchanged within 2 minutes).

Reagent 4

10

10

Mix well, incubate at room temperature (25 ℃) for 20 minutes, and then read A2 at 340nm (if the A value continues to increase, the incubation time needs to be extended until the absorbance value remains unchanged within 2 minutes). Δ A=(A2-A1) measurement - (A2-A1) blank.

[Note] 1 If the difference in Δ A is hovering around zero, the sample size V1 can be increased (such as increasing to 50 μ L, the three phases of the reagent should be reduced while keeping the total volume unchanged), or the sample sampling mass W can be increased. The changed V1 and W need to be substituted into the formula for recalculation.
If the A2 value exceeds 1.2, the amount of sample added V1 can be reduced (such as to 10 μ L, the three-phase reagent should be increased while keeping the total volume unchanged), or the sample can be diluted with distilled water (keeping the sample addition system unchanged), and the changed V1 and D need to be substituted into the formula for recalculation.
Result calculation:
1. Calculated by sample weight:
1PG/G1P content (µ g/g fresh weight)=[(Δ A ÷ (ε× d) × V2 × 106 × MR] ÷ (W × V1 ÷ V) × D=836 × Δ A ÷ W × D
2. Calculated by the number of cells:
1PG/G1P content (μ g/104 cell)=[(Δ A ÷ (ε× d) × V2 × 106 × MR] ÷ (500 × V1 ÷ V) × D=1.7 × Δ A × D. 3. Calculated by liquid volume:
1PG/G1P content (µ g/mL)=[(Δ A ÷ (ε× d) × V2 × 106 × Mr] ÷ V1=836 × Δ A

ε---NADPH Molar extinction coefficient，6.22×103 L/mol/cm；	d---96 Orifice plate optical diameter，0.5cm；
V---Add volume of extraction solution，1 mL；	V1---Add sample volume，0.02mL
V2---Total reaction volume；0.2mL=2×10-4L；	W---Sample quality，g；
Mr---Glucose-1-phosphate（1PG/G1P）Molecular weight；260；	500---Number of cells, in millions；
D---Dilution ratio，Undiluted is 1。	/

Almacenamiento y envío

Condiciones de almacenamiento de almacenamiento

Store at -20°C

Enviado en

Ice chest + Ice pads