Protein-coding gene in the species Homo sapiens
Relaxin/insulin-like family peptide receptor 2 , also known as RXFP2 , is a human G-protein coupled receptor .[5]
The receptors for glycoprotein hormones such as follicle-stimulating hormone (FSH; see MIM 136530) and thyroid-stimulating hormone (TSH; see MIM 188540) are G protein-coupled , 7-transmembrane receptors (GPCRs) with large N-terminal extracellular domains. Leucine-rich repeat (LRR)-containing GPCRs (LGRs) form a subgroup of the GPCR superfamily. [supplied by OMIM].[5]
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Bathgate RA, Ivell R, Sanborn BM, et al. (2005). "Receptors for relaxin family peptides". Ann. N. Y. Acad. Sci . 1041 (1): 61–76. Bibcode :2005NYASA1041...61B . doi :10.1196/annals.1282.010 . PMID 15956688 . S2CID 1185573 . Bathgate RA, Ivell R, Sanborn BM, et al. (2006). "International Union of Pharmacology LVII: recommendations for the nomenclature of receptors for relaxin family peptides". Pharmacol. Rev . 58 (1): 7–31. doi :10.1124/pr.58.1.9 . PMID 16507880 . S2CID 7466039 . Hsu SY, Nakabayashi K, Nishi S, et al. (2002). "Activation of orphan receptors by the hormone relaxin". Science . 295 (5555): 671–4. Bibcode :2002Sci...295..671H . doi :10.1126/science.1065654 . PMID 11809971 . S2CID 32693420 . Kumagai J, Hsu SY, Matsumi H, et al. (2002). "INSL3/Leydig insulin-like peptide activates the LGR8 receptor important in testis descent" . J. Biol. Chem . 277 (35): 31283–6. doi :10.1074/jbc.C200398200 PMID 12114498 . Gorlov IP, Kamat A, Bogatcheva NV, et al. (2003). "Mutations of the GREAT gene cause cryptorchidism" . Hum. Mol. Genet . 11 (19): 2309–18. doi :10.1093/hmg/11.19.2309 PMID 12217959 . Sudo S, Kumagai J, Nishi S, et al. (2003). "H3 relaxin is a specific ligand for LGR7 and activates the receptor by interacting with both the ectodomain and the exoloop 2" . J. Biol. Chem . 278 (10): 7855–62. doi :10.1074/jbc.M212457200 PMID 12506116 . Ferlin A, Simonato M, Bartoloni L, et al. (2003). "The INSL3-LGR8/GREAT ligand-receptor pair in human cryptorchidism" . J. Clin. Endocrinol. Metab . 88 (9): 4273–9. doi :10.1210/jc.2003-030359 PMID 12970298 . Roh J, Virtanen H, Kumagai J, et al. (2004). "Lack of LGR8 gene mutation in Finnish patients with a family history of cryptorchidism" . Reprod. Biomed. Online . 7 (4): 400–6. doi :10.1016/S1472-6483(10)61883-4 PMID 14656401 . Vinci G, Anjot MN, Trivin C, et al. (2005). "An analysis of the genetic factors involved in testicular descent in a cohort of 14 male patients with anorchia" . J. Clin. Endocrinol. Metab . 89 (12): 6282–5. doi :10.1210/jc.2004-0891 PMID 15579790 . Büllesbach EE, Schwabe C (2005). "LGR8 signal activation by the relaxin-like factor" . J. Biol. Chem . 280 (15): 14586–90. doi :10.1074/jbc.M414443200 PMID 15708846 . Muda M, He C, Martini PG, et al. (2005). "Splice variants of the relaxin and INSL3 receptors reveal unanticipated molecular complexity" . Mol. Hum. Reprod . 11 (8): 591–600. doi :10.1093/molehr/gah205 PMID 16051677 . Rosengren KJ, Zhang S, Lin F, et al. (2006). "Solution structure and characterization of the LGR8 receptor binding surface of insulin-like peptide 3" . J. Biol. Chem . 281 (38): 28287–95. doi :10.1074/jbc.M603829200 PMID 16867980 . Bogatcheva NV, Ferlin A, Feng S, et al. (2007). "T222P mutation of the insulin-like 3 hormone receptor LGR8 is associated with testicular maldescent and hinders receptor expression on the cell surface membrane". Am. J. Physiol. Endocrinol. Metab . 292 (1): E138–44. doi :10.1152/ajpendo.00228.2006 . PMID 16926383 . S2CID 17442101 . Scott DJ, Layfield S, Yan Y, et al. (2007). "Characterization of novel splice variants of LGR7 and LGR8 reveals that receptor signaling is mediated by their unique low density lipoprotein class A modules" . J. Biol. Chem . 281 (46): 34942–54. doi :10.1074/jbc.M602728200 PMID 16963451 . El Houate B, Rouba H, Sibai H, et al. (2007). "Novel mutations involving the INSL3 gene associated with cryptorchidism". J. Urol . 177 (5): 1947–51. doi :10.1016/j.juro.2007.01.002 . PMID 17437853 . Scott DJ, Wilkinson TN, Zhang S, et al. (2007). "Defining the LGR8 residues involved in binding insulin-like peptide 3" . Mol. Endocrinol . 21 (7): 1699–712. doi :10.1210/me.2007-0097 PMID 17473281 .
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Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction