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Trans-cinnamic acid-4-hydroxylase and coding gene and application thereof

A technology of cinnamic acid and hydroxylase, applied in the fields of biotechnology and plant biology, to achieve good substrate specificity and regioselectivity

Active Publication Date: 2017-05-31
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, trans-cinnamic acid-4-hydroxylase and its coding gene have not been isolated and cloned from Lycoris plants

Method used

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  • Trans-cinnamic acid-4-hydroxylase and coding gene and application thereof
  • Trans-cinnamic acid-4-hydroxylase and coding gene and application thereof
  • Trans-cinnamic acid-4-hydroxylase and coding gene and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, the cloning of trans-cinnamic acid-4-hydroxylase LaC4H coding gene

[0048] The two primers synthesized respectively have the nucleotide sequences of SEQ ID NO: 3 and SEQ ID NO: 4 in the sequence listing.

[0049] Using the cDNA obtained by reverse transcription of RNA extracted from Hudixiao as a template, PCR was performed using the above two primers SEQ ID NO: 3 and SEQ ID NO: 4. DNA polymerase was selected from Nanjing Nuoweizan Biotechnology Co., Ltd. Super-Fidelity DNA polymerase. The PCR amplification program was: 95°C for 5 min; 94°C for 45 s, 56°C for 45 s, 72°C for 2 min, a total of 30 cycles; 72°C for 10 min, then drop to 10°C. The PCR products were detected by agarose gel electrophoresis, and the results were as follows: figure 1 .

[0050] Under the irradiation of ultraviolet light, cut out the target DNA band. Then use the multifunctional DNA purification kit (spin column type) (Beijing Biotech Biotechnology Co., Ltd.) to recover the DN...

Embodiment 2

[0052] The construction of the recombinant expression vector of embodiment 2, LaC4H gene

[0053] (1) Synthesize two primers respectively having the nucleotide sequences of SEQ ID NO: 5 and SEQ ID NO: 7 in the sequence listing. Two restriction sites, NdeI and XhoI, and their protected base sequences were respectively set at the 5'-ends of the synthesized primers SEQ ID NO: 5 and SEQ ID NO: 7, and PCR amplification was performed using the cDNA of Hudixiao as a template. The PCR amplification procedure is the same as in Example 1. The PCR amplified product was detected by agarose gel electrophoresis, separated, gel-cut and recovered, and then digested with NdeI and XhoI, and then ligated with T4 DNA ligase from Takara Bioengineering (Dalian) Co., Ltd. (TaKaRa) and also passed NdeI and XhoI double enzymes. cut pET28a vector (Novagen). The ligation product was transformed into Escherichia coli (E.coli) DH5α (purchased from Nanjing Novizan Biotechnology Co., Ltd.) competent cells...

Embodiment 3

[0055] Embodiment 3, construction of LaC4H and LaC4H (ΔN28) functional expression vector

[0056] (1) Two primers respectively having the nucleotide sequences of SEQ ID NO: 8 and SEQ ID NO: 9 in the sequence table were synthesized, and the CPR coding gene was amplified by PCR using the cDNA of Hudixiao as a template. The PCR amplification procedure is the same as in Example 1. PCR products were separated and recovered by agarose gel electrophoresis. Both ends of the recovered DNA fragment have 25 bp homologous sequences to both sides of the NdeI restriction site of the pET28a-LaC4H vector. The pET28a-LaC4H vector was linearized with NdeI restriction endonuclease (purchased from Bao Bioengineering (Dalian) Co., Ltd. (TaKaRa)). Using the One-step cloning kit (purchased from Nanjing Novizan Biotechnology Co., Ltd.) according to the product instructions, the CPR-encoding gene was introduced into the NdeI restriction site of the pET28a-LaC4H vector, and the synthetic sequence lis...

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Abstract

The invention relates to a trans-cinnamic acid-4-hydroxylase and a coding gene and application thereof. The trans-cinnamic acid-4-hydroxylase of lycoris aurea is disclosed for the first time; and the trans-cinnamic acid-4-hydroxylase has good substrate specificity and regioselectivity, and hydroxylation of 4-bit C of trans-cinnamic acid can be catalyzed to generate p-cumaric acid. The invention further discloses a polynucleotide of coding the trans-cinnamic acid-4-hydroxylase, a carrier and host cell for expressing the trans-cinnamic acid-4-hydroxylase, and a method for producing the p-cumaric acid.

Description

technical field [0001] The invention relates to the fields of biotechnology and plant biology; more specifically, the invention relates to a trans-cinnamic acid-4-hydroxylase derived from Amaryllidaceae plants, its coding gene and application. Background technique [0002] Plant cytochrome P450 enzymes (Cytochrome P450enzymes, CYPs) participate in the biosynthesis of a large number of plant natural products, and are one of the key enzymes in the biosynthesis of natural products. The reaction has structure selectivity, regioselectivity and stereoselectivity. The catalytic activity of CYPs is dependent on cytochrome P450 reductase. Cytochrome P450 reductase can transfer electrons from electron donors (reducing power) to CYPs, assisting CYPs to carry out a series of biological reactions with structure specificity, region specificity and stereospecificity. [0003] Trans-cinnamic acid-4-hydroxylase is a plant cytochrome P450 enzyme belonging to the CYP73 subfamily, which catal...

Claims

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Application Information

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IPC IPC(8): C12N9/02C12N15/53C12P7/42
CPCC12N9/0081C12P7/42C12Y114/15006
Inventor 李宜奎汪仁钱彬彬李晓丹徐晟程丽夏冰
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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