This is a hypoxia-inducible factor-1 (HIF-1 a) 19-mer fragment. HIF-1 functions as master regulator of response to oxygen homeostasis. Hypoxia-induced gene expression is initiated when HIF-1 subunit is stabilized in response to a lack of oxygen. This part of HIF-1 binds to the von Hippel-Lindau factor (VHL) an E3 ubiquitin ligase, and the proline 564 is absolutely critical to the binding process.

SEC inhibitor KL-2 (KL-2) 是一种拟肽先导化合物，有效的选择性 SEC 抑制剂，通过破坏 SEC 支架蛋白 AFF4 和 P-TEFb 之间的相互作用，导致 Pol II 从启动子近端暂停位点的释放受损并且进行性转录延伸的平均速率降低。SEC inhibitor KL-2 剂量依赖性地抑制 AFF4-CCNT1 相互作用，Ki 值为 1.50 μM。

Luteolin-7-O-β-D-glucopyranoside 是藏药脉花党参地上部分主要的化学成分之一。