菜单 基因医生

质体蛋白是一个肌动蛋白结合蛋白家族，在真核生物进化过程中一直保守，并在高等真核生物的大多数组织中表达。在人类中，发现了两种普遍存在的质体亚型（L和T）质体素1（也称为伞蛋白）是第三种不同的质体亚型，在小肠中高水平表达。L亚型仅在造血细胞系中表达，而T亚型则在具有复制潜能的实体组织的所有其他正常细胞（成纤维细胞、内皮细胞、上皮细胞、黑色素细胞等）中发现。然而，在许多非造血来源的恶性人类细胞中发现了L-质体素，这表明它的表达是在实体组织中诱导肿瘤发生的。[由RefSeq提供，2008年7月]
Plastins are a family of actin-binding proteins that are conserved throughout eukaryote evolution and expressed in most tissues of higher eukaryotes. In humans, two ubiquitous plastin isoforms (L and T) have been identified. Plastin 1 (otherwise known as Fimbrin) is a third distinct plastin isoform which is specifically expressed at high levels in the small intestine. The L isoform is expressed only in hemopoietic cell lineages, while the T isoform has been found in all other normal cells of solid tissues that have replicative potential (fibroblasts, endothelial cells, epithelial cells, melanocytes, etc.). However, L-plastin has been found in many types of malignant human cells of non-hemopoietic origin suggesting that its expression is induced accompanying tumorigenesis in solid tissues. [provided by RefSeq, Jul 2008]