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RSPO1 Q2MKA7

R-spondin-1 (顶板特异性Spondin-1) (hRspo1)

蛋白质信息 (UniProt)

R-spondin-1 (顶板特异性Spondin-1) (hRspo1)

Q2MKA7

功能描述

作为LGR4-6受体的配体,激活经典Wnt信号通路 (PubMed:29769720)。在与LGR4-6 (LGR4、LGR5或LGR6) 结合后,LGR4-6与被细胞外Wnt受体激活的磷酸化LRP6和frizzled受体结合,触发经典Wnt信号通路以增加靶基因的表达。还作为ZNRF3(Wnt信号通路的重要调节因子)的抑制剂,调节经典Wnt/beta-catenin依赖性通路和非经典Wnt信号。作为frizzled FZD8和LRP6的配体。可能负向调节TGF-beta通路。在卵巢决定中具有重要作用。通过与KREM1相互作用,拮抗DKK1/KREM1介导的LRP6内吞作用,从而调节Wnt信号 (PubMed:17804805)。 {ECO:0000269|PubMed:16109882, ECO:0000269|PubMed:17804805, ECO:0000269|PubMed:21727895, ECO:0000269|PubMed:21909076, ECO:0000269|PubMed:22575959, ECO:0000269|PubMed:22615920, ECO:0000269|PubMed:22815884, ECO:0000269|PubMed:23756652, ECO:0000269|PubMed:23809763, ECO:0000269|PubMed:29769720}。

组织特异性

Abundantly expressed in adrenal glands, ovary, testis, thyroid and trachea but not in bone marrow, spinal cord, stomach, leukocytes colon, small intestine, prostate, thymus and spleen.

亚细胞定位

Secreted

关键词

3D-structure Alternative splicing Disulfide bond Glycoprotein Heparin-binding Nucleus Palmoplantar keratoderma Proteomics identification Reference proteome Repeat