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元件指南
VectorBuilder提供了许多常用的载体元件，可供用户在设计载体时进行选择。下表按类型提供了这些常用元件的详细信息。
备注:
连接子（linker）用于连接由单个启动子驱动的多个ORF同时表达。连接子（linker）有两种类型：
连接子（linker）用于连接由单个启动子驱动的多个ORF同时表达。连接子（linker）有两种类型：
- 通读型连接子（例如融合连接子或2A肽）：上游ORF缺少终止密码子，使得翻译从上游ORF通过连接子进入下游的ORF。
- 非通读型连接子（例如IRES）：上游ORF以终止密码子结束，使得上游ORF的翻译在到达接头之前终止。
融合蛋白（通读型连接子）
2A肽（通读型连接子）
| 姓名 | 描述 | Application Notes | Length | Details |
|---|---|---|---|---|
| T2A | Self-cleaving 2A peptide from Thosea asigna virus | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. P2A and T2A have higher cleavage efficiency compared to other 2As. | 63 bp | View |
| P2A | Self-cleaving 2A peptide from Porcine teschovirus-1 | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. P2A and T2A have higher cleavage efficiency compared to other 2As. | 66 bp | View |
| F2A | Self-cleaving 2A peptide from foot-and-mouth disease virus | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. | 75 bp | View |
| E2A | Self-cleaving 2A peptide from Equine rhinitis A virus | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. | 69 bp | View |
| T2A(dme) | Self-cleaving 2A peptide from Thosea asigna virus, codon-optimized for Drosophila melanogaster. | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. P2A and T2A have higher cleavage efficiency compared to other 2As. | 54 bp | View |
| P2A(dme) | Self-cleaving 2A peptide from Porcine teschovirus-1, codon-optimized for Drosophila melanogaster. | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. P2A and T2A have higher cleavage efficiency compared to other 2As. | 57 bp | View |
| E2A(dme) | Self-cleaving 2A peptide from Equine rhinitis A virus, codon-optimized for Drosophila melanogaster. | Causes co-translational cleavage of the encoded polypeptide. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by 2A. | 60 bp | View |
IRES（非连续翻译）
| 姓名 | 描述 | Application Notes | Length | Details |
|---|---|---|---|---|
| IRES | Encephalomyocarditis virus internal ribosome entry site | Recruits ribosome to initiate translation internally on a transcript independent of its 5' end. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by IRES. | 588 bp | View |
| Ubx-IRES | Drosophila melanogaster Ultrabithorax internal ribosome entry site | Recruits ribosomes to initiate translation internally on a transcript independent of its 5' end. Multiple proteins can be made from a polycistronic transcript containing multiple ORFs separated by IRES. | 594 bp | View |
