該基因編碼一種轉(zhuǎn)錄因子,初被鑒定為一種廣泛表達(dá)的哺乳動物DNA結(jié)合蛋白,可結(jié)合HTLV-1的LTR中的一種稅收反應(yīng)增強因子。編碼蛋白也被分離出來,其特征是cAMP反應(yīng)元件結(jié)合蛋白2(CREB-2)。該基因編碼的蛋白質(zhì)屬于一個DNA結(jié)合蛋白家族,包括轉(zhuǎn)錄因子AP-1家族、cAMP反應(yīng)元件結(jié)合蛋白(CREBs)和CREB樣蛋白。這些轉(zhuǎn)錄因子共享蛋白-蛋白質(zhì)相互作用所涉及的亮氨酸拉鏈區(qū)域,位于C-末端,作為作為DNA結(jié)合結(jié)構(gòu)域的基本氨基酸的延伸。已經(jīng)描述了兩個編碼相同蛋白質(zhì)的替代轉(zhuǎn)錄物。兩個假基因位于q28的X染色體上,位于一個含有大量反向重復(fù)的區(qū)域。?[provided by RefSeq, Sep 2011]
Binds DNA as a homo- or heterodimer. Interacts (via its leucine zipper domain) with GABBR1 and GABBR2 (via their C-termini). Interacts (via its DNA binding domain) with FOXO1 (C-terminal half); the interaction occurs in osteoblasts and regulates glucose homeostasis through suppression of beta-cell proliferation and a decrease in insulin production. Interacts with SATB2; the interaction results in enhanced DNA binding and transactivation by these transcription factors. Interacts with CEP290 (via an N-terminal region). Interacts with NEK6, DAPK2 (isoform 2) and ZIPK/DAPK3. Forms a heterodimer with TXLNG in osteoblasts. Interacts with DDIT3/CHOP.