Recombinant Human R-Spondin 4 Protein

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

R-Spondin 4 (RSPO4, roof plate-specific spondin 4), also called cysteine‑rich and single thrombospondin domain containing-4 (Cristin 4), is an ~33 kDa secreted heparin-binding protein that shares ~35% amino acid (aa) identity with three other R‑Spondin family members (1‑3). All are positive modulators of Wnt/ beta -catenin signaling, but vary in activity (2). R‑Spondins regulate Wnt/ beta -catenin by competing with the Wnt antagonist DKK-1 for binding to the Wnt co-receptors LRP-6 and Kremen, reducing their DKK-1-mediated internalization (1, 4). Like other R‑spondins, human R‑Spondin 4 (228 aa) contains a signal sequence (aa 1‑19), two adjacent cysteine‑rich furin-like domains (aa 85-128) with one potential tyrosine phosphorylation site (aa 114), followed by a thrombospondin (TSP‑1) motif (aa 137‑197) and a region rich in basic residues (aa 199‑228). Mature human R‑Spondin 4 shares 81%, 81%, 84%, 84% and 86% aa identity with mouse, rat, equine, canine and bovine R‑Spondin 4, respectively. Of two potential isoforms, one lacks the TSP-1 domain, while another terminates at aa 224 (5). Each R‑Spondin has a distinct expression pattern (6). In the mouse, R‑Spondin 4 mRNA is found during development of limb bud mesenchyme, nail beds, heart and teeth (6‑8). In humans, mutations of R‑Spondin 4 have been found to cause anonychia, a condition in which fingernails and toenails are absent (8‑10).

We have publications tested in 1 confirmed species: Human.

We have publications tested in 2 applications: Bioassay, Dot Blot.

Showing Publications 1 - 8 of 8.

Publications using 4575-RS	Applications	Species
Nualart, F;Cifuentes, M;Ramírez, E;Martínez, F;Barahona, MJ;Ferrada, L;Saldivia, N;Bongarzone, ER;Thorens, B;Salazar, K; Hyperglycemia increases SCO-spondin and Wnt5a secretion into the cerebrospinal fluid to regulate ependymal cell beating and glucose sensing PLoS biology 2023-09-01 [PMID: 37733692] (Dot Blot, Human)	Dot Blot	Human
H Lee, C Seidl, R Sun, A Glinka, C Niehrs R-spondins are BMP receptor antagonists in Xenopus early embryonic development Nat Commun, 2020-11-04;11(1):5570. 2020-11-04 [PMID: 33149137] (Bioassay, Human)	Bioassay	Human
S Park, J Cui, WA Yu, L Wu, K Carmon, QJ Liu Differential activities and mechanisms of the four R-Spondins in potentiating Wnt/?-catenin signaling J. Biol. Chem., 2018-05-11;0(0):. 2018-05-11 [PMID: 29752411] (Bioassay, Human)	Bioassay	Human
AM Lebensohn, R Rohatgi R-spondins can potentiate WNT signaling without LGRs Elife, 2018-02-06;7(0):. 2018-02-06 [PMID: 29405118] (Bioassay, Human)	Bioassay	Human
Carmon K, Gong X, Yi J, Thomas A, Liu Q RSPO-LGR4 functions via IQGAP1 to potentiate Wnt signaling. Proc Natl Acad Sci U S A, 2014-03-17;111(13):E1221-9. 2014-03-17 [PMID: 24639526] (Bioassay, Human)	Bioassay	Human
Wu C, Qiu S, Lu L, Zou J, Li W, Wang O, Zhao H, Wang H, Tang J, Chen L, Xu T, Sun Z, Liao W, Luo G, Lu X RSPO2-LGR5 signaling has tumour-suppressive activity in colorectal cancer. Nat Commun, 2014-01-01;5(0):3149. 2014-01-01 [PMID: 24476626] (Bioassay, Human)	Bioassay	Human
Wilson TR, Fridlyand J, Yan Y, Penuel E, Burton L, Chan E, Peng J, Lin E, Wang Y, Sosman J, Ribas A, Li J, Moffat J, Sutherlin DP, Koeppen H, Merchant M, Neve R, Settleman J Widespread potential for growth-factor-driven resistance to anticancer kinase inhibitors. Nature, 2012-07-26;487(7408):505-9. 2012-07-26 [PMID: 22763448] (Bioassay, Human)	Bioassay	Human
Hao HX, Xie Y, Zhang Y, Charlat O, Oster E, Avello M, Lei H, Mickanin C, Liu D, Ruffner H, Mao X, Ma Q, Zamponi R, Bouwmeester T, Finan PM, Kirschner MW, Porter JA, Serluca FC, Cong F ZNRF3 promotes Wnt receptor turnover in an R-spondin-sensitive manner. Nature, 2012-04-29;485(7397):195-200. 2012-04-29 [PMID: 22575959] (Bioassay, Human)	Bioassay	Human

Array 4575-RS

• R-Spondin 4 Antibodies
• R-Spondin 4 Lysate
• R-Spondin 4 Proteins and Enzymes