Relaxin signaling pathway Gene Set

Dataset KEGG Pathways 2026
Category structural or functional annotations
Type pathway
Description Human relaxin-2 ("relaxin"), originally identified as a peptidic hormone of pregnancy, is now known to exert a range of pleiotropic effects including vasodilatory, anti-fibrotic and angiogenic effects in both males and females. It belongs to the so-called relaxin peptide family which includes the insulin-like peptides INSL3 and INSL5, and relaxin-3 (H3) as well as relaxin. INSL3 has clearly defined specialist roles in male and female reproduction, relaxin-3 is primarily a neuropeptide involved in stress and metabolic control, and INSL5 is widely distributed particularly in the gastrointestinal tract. These members of relaxin peptide family exert such effects binding to different kinds of receptors, classified as relaxin family peptide (RXFP) receptors: RXFP1, RXFP2, RXFP3, and RXFP4. These G protein-coupled receptors predominantly bind relaxin, INSL3, relaxin-3, and INSL-5, respectively. RXFP1 activates a wide spectrum of signaling pathways to generate second messengers that include cAMP and nitric oxide, whereas RXFP2 activates a subset of these pathways. Both RXFP3 and RXFP4 inhibit cAMP production, and RXFP3 activate MAP kinases. (Kyoto Encyclopedia of Genes and Genomes, hsa04926)
External Link https://www.kegg.jp/entry/hsa04926
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126 proteins participating in the Relaxin signaling pathway pathway from the KEGG Pathways 2026 dataset.

Symbol Name
ACTA2 actin, alpha 2, smooth muscle, aorta
ADCY1 adenylate cyclase 1 (brain)
ADCY2 adenylate cyclase 2 (brain)
ADCY4 adenylate cyclase 4
ADCY5 adenylate cyclase 5
ADCY6 adenylate cyclase 6
ADCY7 adenylate cyclase 7
ADCY8 adenylate cyclase 8 (brain)
ADCY9 adenylate cyclase 9
AKT1 v-akt murine thymoma viral oncogene homolog 1
AKT2 v-akt murine thymoma viral oncogene homolog 2
AKT3 v-akt murine thymoma viral oncogene homolog 3
ARRB1 arrestin, beta 1
ARRB2 arrestin, beta 2
ATF4 activating transcription factor 4
ATF6B activating transcription factor 6 beta
CLSTN1 calsyntenin 1
COL1A1 collagen, type I, alpha 1
COL1A2 collagen, type I, alpha 2
COL3A1 collagen, type III, alpha 1
COL4A1 collagen, type IV, alpha 1
COL4A2 collagen, type IV, alpha 2
COL4A3 collagen, type IV, alpha 3 (Goodpasture antigen)
COL4A4 collagen, type IV, alpha 4
COL4A5 collagen, type IV, alpha 5
COL4A6 collagen, type IV, alpha 6
CREB1 cAMP responsive element binding protein 1
CREB3L1 cAMP responsive element binding protein 3-like 1
CREB3L2 cAMP responsive element binding protein 3-like 2
CREB3L3 cAMP responsive element binding protein 3-like 3
CREB3L4 cAMP responsive element binding protein 3-like 4
CREB5 cAMP responsive element binding protein 5
EDN1 endothelin 1
EDNRB endothelin receptor type B
EGFR epidermal growth factor receptor
FOS FBJ murine osteosarcoma viral oncogene homolog
GDNF glial cell derived neurotrophic factor
GNA15 guanine nucleotide binding protein (G protein), alpha 15 (Gq class)
GNAI1 guanine nucleotide binding protein (G protein), alpha inhibiting activity polypeptide 1
GNAI2 guanine nucleotide binding protein (G protein), alpha inhibiting activity polypeptide 2
GNAI3 guanine nucleotide binding protein (G protein), alpha inhibiting activity polypeptide 3
GNAO1 guanine nucleotide binding protein (G protein), alpha activating activity polypeptide O
GNAS GNAS complex locus
GNB1 guanine nucleotide binding protein (G protein), beta polypeptide 1
GNB2 guanine nucleotide binding protein (G protein), beta polypeptide 2
GNB3 guanine nucleotide binding protein (G protein), beta polypeptide 3
GNB4 guanine nucleotide binding protein (G protein), beta polypeptide 4
GNB5 guanine nucleotide binding protein (G protein), beta 5
GNG10 guanine nucleotide binding protein (G protein), gamma 10
GNG11 guanine nucleotide binding protein (G protein), gamma 11
GNG12 guanine nucleotide binding protein (G protein), gamma 12
GNG13 guanine nucleotide binding protein (G protein), gamma 13
GNG2 guanine nucleotide binding protein (G protein), gamma 2
GNG3 guanine nucleotide binding protein (G protein), gamma 3
GNG4 guanine nucleotide binding protein (G protein), gamma 4
GNG5 guanine nucleotide binding protein (G protein), gamma 5
GNG7 guanine nucleotide binding protein (G protein), gamma 7
GNG8 guanine nucleotide binding protein (G protein), gamma 8
GNGT1 guanine nucleotide binding protein (G protein), gamma transducing activity polypeptide 1
GNGT2 guanine nucleotide binding protein (G protein), gamma transducing activity polypeptide 2
GRB2 growth factor receptor-bound protein 2
HRAS Harvey rat sarcoma viral oncogene homolog
INSL3 insulin-like 3 (Leydig cell)
INSL5 insulin-like 5
JUN jun proto-oncogene
LNCEGFL7OS lncRNA EGFL7 opposite strand
MAP2K1 mitogen-activated protein kinase kinase 1
MAP2K2 mitogen-activated protein kinase kinase 2
MAP2K4 mitogen-activated protein kinase kinase 4
MAP2K7 mitogen-activated protein kinase kinase 7
MAPK1 mitogen-activated protein kinase 1
MAPK10 mitogen-activated protein kinase 10
MAPK11 mitogen-activated protein kinase 11
MAPK12 mitogen-activated protein kinase 12
MAPK13 mitogen-activated protein kinase 13
MAPK14 mitogen-activated protein kinase 14
MAPK3 mitogen-activated protein kinase 3
MAPK8 mitogen-activated protein kinase 8
MAPK9 mitogen-activated protein kinase 9
MMP1 matrix metallopeptidase 1
MMP13 matrix metallopeptidase 13
MMP2 matrix metallopeptidase 2
MMP9 matrix metallopeptidase 9
NANOS1 nanos homolog 1 (Drosophila)
NANOS2 nanos homolog 2 (Drosophila)
NANOS3 nanos homolog 3 (Drosophila)
NFKB1 nuclear factor of kappa light polypeptide gene enhancer in B-cells 1
NFKBIA nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor, alpha
NRAS neuroblastoma RAS viral (v-ras) oncogene homolog
PIK3CA phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha
PIK3CB phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit beta
PIK3R1 phosphoinositide-3-kinase, regulatory subunit 1 (alpha)
PIK3R2 phosphoinositide-3-kinase, regulatory subunit 2 (beta)
PIK3R3 phosphoinositide-3-kinase, regulatory subunit 3 (gamma)
PLCB1 phospholipase C, beta 1 (phosphoinositide-specific)
PLCB2 phospholipase C, beta 2
PLCB3 phospholipase C, beta 3 (phosphatidylinositol-specific)
PLCB4 phospholipase C, beta 4
PRKACB protein kinase, cAMP-dependent, catalytic, beta
PRKACG protein kinase, cAMP-dependent, catalytic, gamma
PRKCA protein kinase C, alpha
PRKCZ protein kinase C, zeta
RELA v-rel avian reticuloendotheliosis viral oncogene homolog A
RLN1 relaxin 1
RLN2 relaxin 2
RLN3 relaxin 3
RNASE3 ribonuclease, RNase A family, 3
RXFP1 relaxin/insulin-like family peptide receptor 1
RXFP2 relaxin/insulin-like family peptide receptor 2
RXFP3 relaxin/insulin-like family peptide receptor 3
RXFP4 relaxin/insulin-like family peptide receptor 4
SHC1 SHC (Src homology 2 domain containing) transforming protein 1
SHC2 SHC (Src homology 2 domain containing) transforming protein 2
SHC3 SHC (Src homology 2 domain containing) transforming protein 3
SHC4 SHC (Src homology 2 domain containing) family, member 4
SMAD2 SMAD family member 2
SOS1 son of sevenless homolog 1 (Drosophila)
SOS2 son of sevenless homolog 2 (Drosophila)
SRC SRC proto-oncogene, non-receptor tyrosine kinase
TGFB1 transforming growth factor, beta 1
TGFBR1 transforming growth factor, beta receptor 1
TGFBR2 transforming growth factor, beta receptor II (70/80kDa)
VEGFA vascular endothelial growth factor A
VEGFB vascular endothelial growth factor B
VEGFC vascular endothelial growth factor C
VEGFD vascular endothelial growth factor D