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Rabbit Anti-HOXA5/FITC Conjugated antibody
background:
HOXA5 upregulates both p53 promoter-reporter constructs and endogenous p53 synthesis, leading to apoptosis. HOXA5 is detectable in approximately one-third of primary tumors. Lack of HOXA5 expression strongly correlates with methylation of its promoter region, suggesting a causal role for methylation in the silencing of HOXA5 gene expression. HOXA5 expression is an important step in tumorigenesis and loss of expression of p53 in human breast cancer may be primarily due to lack of expression of HOXA5.
Function:
Sequence-specific transcription factor which is part of a developmental regulatory system that provides cells with specific positional identities on the anterior-posterior axis. Also binds to its own promoter. Binds specifically to the motif 5'-CYYNATTA[TG]Y-3'.
Subcellular Location:
Nucleus.
Similarity:
Belongs to the Antp homeobox family.
Contains 1 homeobox DNA-binding domain.
Database links:
Entrez Gene: 642 Human
Entrez Gene: 15402 Mouse
Entrez Gene: 79241 Rat
Omim: 142952 Human
SwissProt: P20719 Human
SwissProt: P09021 Mouse
SwissProt: P52949 Rat
Unigene: 655218 Human
Unigene: 173 Mouse
Unigene: 8465 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
p53基因保护细胞不会癌变,HOXA5协助细胞的p53保持适当水平。如果HOXA5水平下降或完全缺乏,p53基因就不能防止细胞癌变。低水平的HOXA5通过另一种促甲基化机制使基因不能表达而发生。正常状态下,p53肿瘤抑制蛋白发现DNA的损伤,将信息传递给细胞以修复损伤或者导致死亡。过少或没有p53不仅减弱细胞正常功能,而且降低细胞感受损伤的能力。因此,若细胞缺少HOXA5蛋白也很可能是肿瘤发展的重要过程。
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