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CEBPB

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CEBPB
已知的結構
PDB直系同源搜尋: PDBe RCSB
識別號
別名CEBPB;, C/EBP-beta, IL6DBP, NF-IL6, TCF5, CCAAT/enhancer binding protein beta, CCAAT enhancer binding protein beta
外部IDOMIM189965 MGI88373 HomoloGene3807 GeneCardsCEBPB
基因位置(人類
20號染色體
染色體20號染色體[1]
20號染色體
CEBPB的基因位置
CEBPB的基因位置
基因座20q13.13起始50,190,830 bp[1]
終止50,192,668 bp[1]
RNA表達模式
查閱更多表達數據
直系同源
物種人類小鼠
Entrez
Ensembl
UniProt
mRNA​序列

NM_005194
​NM_001285878
​NM_001285879

NM_001287738
​NM_001287739
​NM_009883

蛋白序列

NP_001272807
​NP_001272808
​NP_005185

NP_001274667
​NP_001274668
​NP_034013

基因位置​(UCSC)Chr 20: 50.19 – 50.19 MbChr 2: 167.53 – 167.53 Mb
PubMed​查找[3][4]
維基數據
檢視/編輯人類檢視/編輯小鼠

CCAAT/增強子結合蛋白β,簡稱C/EBP-βCEBPB,是一種在人體中由CEBPB基因編碼的蛋白質[5][6]

功能

這種無內含子基因編碼的蛋白質是一種bZIP轉錄因子,可以作為同源二聚體與某些DNA調控區域結合。它還可以與相關蛋白 C/EBP-αC/EBP-δC/EBP-γ形成異二聚體。編碼的蛋白質在調節涉及免疫和炎症反應的基因中很重要,並且已顯示與IL-6基因中的IL-1反應元件以及幾種急性期和細胞因子基因的調節區域結合。此外,編碼的蛋白質可以結合啟動子和上游元件並刺激I型膠原蛋白基因的表達。[7]

CEBPB對正常的巨噬細胞功能至關重要,巨噬細胞是一種重要的免疫細胞亞型;無法表達CEBPB的小鼠具有無法分化(特化)的巨噬細胞,因此無法執行其所有生物學功能——包括巨噬細胞介導的肌肉修復。[8]觀察工作表明,血液白血球中CEBPB的表達與人體肌肉力量呈正相關,[9]強調了免疫系統,特別是巨噬細胞在維持肌肉功能中的重要性。

CEBPB基因的功能可以通過基於獨立驗證的siRNA敲低來有效檢查。[10]

靶基因

CEBPB能夠增加幾個靶基因的表達。其中,一些在神經系統中具有特定作用,如前速激肽原-1基因,產生P物質神經激肽A[11]以及負責生物合成重要神經遞質乙酰膽鹼膽鹼乙酰轉移酶[12]其他目標包括編碼細胞因子的基因,例如IL-6[13]IL-4[14]IL-5[15]腫瘤壞死因子-α[16]還發現編碼賦予細胞多藥抗性的轉運蛋白的基因被CEBPB活化。這樣的基因包括ABCC2[17]ABCB1[18]

相互作用

CEBPB已被證明可以與以下物質相互作用:

參見

參考文獻

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  4. ^ Mouse PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine. 
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外部連結