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胶孢炭疽菌已知致病基因的理化性质及特征分析

Physicochemical properties and characteristic analysis of known pathogenic genes in Colletotrichum gloeosporioides

  • 摘要: 为探讨不同类别的胶孢炭疽菌致病基因蛋白序列理化性质的特征,以前人发现的59个致病基因的蛋白序列为基础开展生物信息学分析,将59个致病基因的蛋白序列利用ProtParam网站、Protscale网站、ProtComp网站、Phyre网站、DeepTMHMM网站、SMART网站、STRING网站分析蛋白的理化性质,对其致病基因分蛋白类、酶类、调控因子类进行统计归纳。结果表明:理论等电点集中在5.01~7.00,不稳定系数集中在30.01~50.00,亚细胞定位集中在细胞核、细胞质和细胞质膜;亲水性最强氨基酸残基数量最多的是K,疏水性最强氨基酸残基数量最多的是A,但酶类和调控因子类全部为亲水性蛋白,蛋白类存在疏水性蛋白;酶类和蛋白类的二级结构中α螺旋的占比较大,调控因子类二级结构中无规则卷曲的占比较大;调控因子类含有保守结构域的占比较大,蛋白互作集中在酶类蛋白。

     

    Abstract: To explore the physicochemical properties of pathogenic gene protein sequences from different categories of Colletotrichum gloeosporioides, we conducted a bioinformatics analysis was conducted based on 59 previously identified pathogenic gene protein sequences. The physicochemical properties of these proteins were analyzed using various online tools, including ProtParam, Protscale, ProtComp, Phyre, DeepTMHMM, SMART, and STRING. The 59 pathogenic genes were classified into proteins, enzymes, and regulatory factors categories for statistical summary. The results revealed that the theoretical isoelectric points were concentrated between 5.01 to 7.00, and the instability coefficients were mainly in the range of 30.01 to 50.00. Subcellular localization was predominantly in the nucleus, cytoplasm, and plasma membrane. Among the amino acid residues, K had the highest number of hydrophilic residues, while A had the highest number of hydrophobic residues. However, all enzymes and regulatory factors were hydrophilic proteins, with some proteins being hydrophobic. In terms of secondary structure, enzymes and proteins had a higher proportion of α-helices, while regulatory factors had a higher proportion of random coils. Regulatory factors also had a higher proportion of conserved domains, and protein interactions were mainly observed among enzymatic proteins.

     

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