NsdD是一种GATA类型的转录因子,参与Aureobasidium melanogenum中黑色素,pullulan和polymalate宏分子的调节和生物合成
1College of Marine Life Sciences, Ocean University of China, Qingdao, China.
International journal of biological macromolecules
|April 26, 2024
概括
在Aureobasidium melanogenum中的NsdD基因调节了黑色素,pullulan和多酸盐 (PMA) 的产生. 删除NsdD可以增加黑色素,但可以减少Pullulan和PMA,揭示了它在代谢物生物合成中的双重作用.
科学领域:
- 微生物学 微生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 黑色素的Aureobasidium产生的黑色素,pullulan,和多酸盐 (PMA).
- 了解这些代谢物的调节对于工业应用至关重要.
- 转录因子在控制代谢途径方面发挥着关键作用.
研究的目的:
- 为了描述Aureobasidium melanogenum中NsdD基因的功能.
- 为了研究NsdD在黑色素,pullulan和PMA生物合成中的调节作用.
- 探索基因改进代谢物产量的潜力.
主要方法:
- 在Aureobasidium melanogenum中基因删除 (Δnsd突变) 和基因补充.
- 分析黑色素,普卢兰和聚酸盐 (PMA) 生产情况.
- 与代谢物生物合成相关的基因转录水平的定量分析.
主要成果:
- 完全去除NsdD基因增强了黑色素的产生,但显著减少了pullulan和PMA的产量.
- 转录分析揭示了 Δnsdd 突变体中黑色素生物合成基因的上调和普卢兰和 PMA 生物合成基因的下调.
- 补充恢复了黑色素的生产和基因表达模式,同时提高了与野生类型菌株相比的pullulan和PMA产量.
结论:
- NsdD作为黑色素生物合成的负调节剂.
- NsdD作为A. melanogenum中pullulan和PMA生物合成的积极调节剂.
- 这项研究提供了对多种代谢物的复杂调节和提高产量的潜在遗传策略的见解.
相关概念视频
Epistasis Analysis
5.0K
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
5.0K
Epistasis
46.7K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
46.7K
Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K
Master Transcription Regulators
6.9K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.9K
Exon Recombination
3.6K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.6K
Pleiotropy
40.4K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.4K


