Semenogelin-1 is a protein that in humans is encoded by the SEMG1gene.[3][4][5]
The protein encoded by this gene is the predominant protein in semen. The encoded secreted protein is involved in the formation of a gel matrix that encases ejaculated spermatozoa. The prostate-specific antigen (PSA) protease processes this protein into smaller peptides, with each possibly having a separate function. The proteolysis process breaks down the gel matrix and allows the spermatozoa to move more freely. Two transcript variants encoding different isoforms have been found for this gene.[5]
Schneider K, Kausler W, Tripier D, et al. (1989). "[Isolation and structure determination of two peptides occurring in human seminal plasma]". Biol. Chem. Hoppe-Seyler. 370 (4): 353–6. doi:10.1515/bchm3.1989.370.1.353. PMID2757795.
Ramasharma K, Sairam MR, Seidah NG, et al. (1984). "Isolation, structure, and synthesis of a human seminal plasma peptide with inhibin-like activity". Science. 223 (4641): 1199–202. Bibcode:1984Sci...223.1199R. doi:10.1126/science.6422553. PMID6422553.
Lilja H, Laurell CB, Jeppsson JO (1984). "Characterization of the predominant basic protein in human seminal plasma, one cleavage product of the major seminal vesicle protein". Scand. J. Clin. Lab. Invest. 44 (5): 439–46. doi:10.3109/00365518409083835. PMID6484484.
Bjartell A, Malm J, Moller C, et al. (1997). "Distribution and tissue expression of semenogelin I and II in man as demonstrated by in situ hybridization and immunocytochemistry". J. Androl. 17 (1): 17–26. doi:10.1002/j.1939-4640.1996.tb00582.x. PMID8833737. S2CID20337870.
Robert M, Gibbs BF, Jacobson E, Gagnon C (1997). "Characterization of prostate-specific antigen proteolytic activity on its major physiological substrate, the sperm motility inhibitor precursor/semenogelin I.". Biochemistry. 36 (13): 3811–9. doi:10.1021/bi9626158. PMID9092810.
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
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