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DENND2B P78524

DENN结构域包含蛋白2B (HeLa肿瘤抑制蛋白1) (致瘤抑制蛋白5)

蛋白质信息 (UniProt)

DENN结构域包含蛋白2B (HeLa肿瘤抑制蛋白1) (致瘤抑制蛋白5)

P78524

功能描述

[Isoform 1]: 可能参与细胞骨架组织和致瘤性。似乎参与导致MAPK1/ERK2激活的信号转导通路。在EGFR从循环内体转运回细胞膜的过程中发挥作用 (PubMed:29030480)。 {ECO:0000269|PubMed:29030480, ECO:0000269|PubMed:9632734}.; FUNCTION: [Isoform 2]: 鸟苷酸交换因子 (GEF),可能激活RAB9A和RAB9B。促进GDP转换为GTP,将失活的GDP结合型Rab蛋白转化为其活性的GTP结合形式。 {ECO:0000269|PubMed:20937701}.; FUNCTION: [Isoform 3]: 可能阻断由ABL1刺激的ERK2激活 (Probable)。可能改变细胞形态和细胞生长 (Probable)。 {ECO:0000305|PubMed:10229203, ECO:0000305|PubMed:9632734}.

组织特异性

Widely expressed with the exception of peripheral blood lymphocytes. Isoform 1 is expressed in several epithelial and fibroblast (including tumorigenic) but absent in lymphoid cell lines (at protein level). Isoform 3 is expressed in primary cell or weakly tumorigenic but not in tumorigenic cell lines (at protein level).

亚细胞定位

[Isoform 1]: Cytoplasm, cell cortex

关键词

Alternative promoter usage Alternative splicing Cell membrane Cytoplasm Endosome Guanine-nucleotide releasing factor Membrane Phosphoprotein Proteomics identification Reference proteome