Metamorphosin A and Analogs
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Metamorphosin A and Analogs
Definition
Metamorphosin A (MMA) peptide originally isolated from the anthozoan Anthopleura elegantissima triggers metamorphosis in Hydractinia echinata. Histochemical studies have shown that MMA is a neuropeptide.
Discovery
Leitz et al., have investigated the role of signals and of signal transduction in the development of the marine hydroid Hydractinia echinata. The larvae undergo metamorphosis in response to a chemical signal provided by environmental bacteria. Metamorphosis can be induced by a variety of different compounds interfering with biochemical signal transduction pathways. Sectioned posterior parts cannot be induced by most compounds known to induce whole larvae to metamorphose. They identified a novel peptide, which they named "metamorphosin A" 1.
Structural Characteristics
It is a oligopeptide of composition, pGlu-Gln-Pro-Gly-Leu-Trp-NH21. peptide signal molecules (<50 amino acid residues) occur widely in animals, and many play important regulatory roles in a variety of physiological processes. Peptides rarely play signaling roles in development. Takahashi et al., develpoed a novel screening project to systematically isolate peptide signal molecules from a freshwater cnidarian species, Hydra magnipapillata 2.
Mode of Action
MMA induces isolated posterior parts to undergo metamorphosis and hence reactivates pattern formation, cell proliferation, cell differentiation, and morphogenesis. It is suggested that this peptide is a part of an internal signaling system involved in control of metamorphosis 1. Leitz et al., in 1995 isolated MMA from Anthopleura elegantissima that triggers metamorphosis in Hydractinia echinata. Antibodies directed against the C-terminal part of the molecule immunohistochemically stain neurosensory cells. They assumed that in metamorphosis MMA (or a closely related LW-amide) is an internal signal, transmitted from the anterior to the posterior body parts. Immunoreactivity is also found in ectodermal nerve processes but not cell bodies in the tentacles and in the basal disk of the foot of Hydra magnipapillata. They concluded LW-amide(s) as a neuropeptides 3.
Functions
The metamorphosis of many marine invertebrate larvae is induced by environmental signals. Upon reception of the cues, internal signals have to be set in motion to convey information to all cells of the larvae. When exposed to synthetic MMA, Hydractinia planulae have been shown to undergo either complete or partial metamorphosis; in the latter case, the posterior end of the larva is converted into head structures (tentacles, hypostome, and mouth), whereas the anterior end retains the larval form. Authors used reverse transcriptase (RT)-PCR to examine the correlation between the time-course of induced head formation 5. Cnidarians are among the simplest animals to possess a nervous system. The cnidarians nervous system has been described as a "nerve net" but may also contain nerve rings and other areas of centralization. Cnidarians synthesize monoamines that act as neurotransmitters in other animals including catecholamines and indolamines. LW-amides, including MMA stimulate contraction of some cnidarian muscles and trigger metamorphosis of hydrozoan planulae, While their role in cnidarian physiology has not been fully elucidated, LW-amides have been hypothesized to function in tentacle formation, metamorphosis and larval physiology and. RF-amides affect cnidarian muscle contraction, feeding responses and exfoliation of gamete follicles. The receptors for these peptides have not been identified, but genes encoding preprohormones have been sequenced from several species 6, 7, 8.
References
1.Leitz T, Morand K, Mann M (1994). Metamorphosin A: a novel peptide controlling development of the lower metazoan Hydractinia echinata (Coelenterata, Hydrozoa). Dev. Biol., 163(2):440-446.
2.Takahashi T, Muneoka Y, Lohmann J, Lopez de Haro MS, Solleder G, Bosch TC, David CN, Bode HR, Koizumi O, Shimizu H, Hatta M, Fujisawa T, Sugiyama T (1997). Systematic isolation of peptide signal molecules regulating development in hydra: LWamide and PW families. PNAS., 94(4):1241-1246.
3.Leitz T, Marion Lay M (1995). Metamorphosin A is a neuropeptide. Development Genes and Evolution, 204(4):276-279.
4.Schmich J, Trepel S, Leitz T (1998). The role of GLWamides in metamorphosis of Hydractinia echinata . Development Genes and Evolution, 208(5):267-273.
5.Mokady O, Dick MH, Lackschewitz D, Schierwater B, Buss LW ,(1998). Over one-half billion years of head conservation? Expression of an ems class gene in Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa). PNAS., 95(7):3673-3678.
6.Tarrant AM (2006). Hormonal Signaling in Cnidarians. Ecotoxicology., 1:2-24
7.Leitz T (2001). Endocrinology of the Cnidaria: State of the art. Zoology-Analysis of
Complex Systems, 103:202-221.
8. Darmer D, Hauser F, Nothacker H, Bosch T, Williamson M, Grimmelikhuijzen CJP. (1998). Three different prohormones yield a variety of Hydra-RFamide (Arg-Phe-NH2) neuropeptides in Hydra magnipapillata. Biochem. J., 332: 403-412.
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Metamorphosin A (MMA) peptide originally isolated from the anthozoan Anthopleura elegantissima triggers metamorphosis in Hydractinia echinata. Histochemical studies have shown that MMA is a neuropeptide.
Discovery
Leitz et al., have investigated the role of signals and of signal transduction in the development of the marine hydroid Hydractinia echinata. The larvae undergo metamorphosis in response to a chemical signal provided by environmental bacteria. Metamorphosis can be induced by a variety of different compounds interfering with biochemical signal transduction pathways. Sectioned posterior parts cannot be induced by most compounds known to induce whole larvae to metamorphose. They identified a novel peptide, which they named "metamorphosin A" 1.
Structural Characteristics
It is a oligopeptide of composition, pGlu-Gln-Pro-Gly-Leu-Trp-NH21. peptide signal molecules (<50 amino acid residues) occur widely in animals, and many play important regulatory roles in a variety of physiological processes. Peptides rarely play signaling roles in development. Takahashi et al., develpoed a novel screening project to systematically isolate peptide signal molecules from a freshwater cnidarian species, Hydra magnipapillata 2.
Mode of Action
MMA induces isolated posterior parts to undergo metamorphosis and hence reactivates pattern formation, cell proliferation, cell differentiation, and morphogenesis. It is suggested that this peptide is a part of an internal signaling system involved in control of metamorphosis 1. Leitz et al., in 1995 isolated MMA from Anthopleura elegantissima that triggers metamorphosis in Hydractinia echinata. Antibodies directed against the C-terminal part of the molecule immunohistochemically stain neurosensory cells. They assumed that in metamorphosis MMA (or a closely related LW-amide) is an internal signal, transmitted from the anterior to the posterior body parts. Immunoreactivity is also found in ectodermal nerve processes but not cell bodies in the tentacles and in the basal disk of the foot of Hydra magnipapillata. They concluded LW-amide(s) as a neuropeptides 3.
Functions
The metamorphosis of many marine invertebrate larvae is induced by environmental signals. Upon reception of the cues, internal signals have to be set in motion to convey information to all cells of the larvae. When exposed to synthetic MMA, Hydractinia planulae have been shown to undergo either complete or partial metamorphosis; in the latter case, the posterior end of the larva is converted into head structures (tentacles, hypostome, and mouth), whereas the anterior end retains the larval form. Authors used reverse transcriptase (RT)-PCR to examine the correlation between the time-course of induced head formation 5. Cnidarians are among the simplest animals to possess a nervous system. The cnidarians nervous system has been described as a "nerve net" but may also contain nerve rings and other areas of centralization. Cnidarians synthesize monoamines that act as neurotransmitters in other animals including catecholamines and indolamines. LW-amides, including MMA stimulate contraction of some cnidarian muscles and trigger metamorphosis of hydrozoan planulae, While their role in cnidarian physiology has not been fully elucidated, LW-amides have been hypothesized to function in tentacle formation, metamorphosis and larval physiology and. RF-amides affect cnidarian muscle contraction, feeding responses and exfoliation of gamete follicles. The receptors for these peptides have not been identified, but genes encoding preprohormones have been sequenced from several species 6, 7, 8.
References
1.Leitz T, Morand K, Mann M (1994). Metamorphosin A: a novel peptide controlling development of the lower metazoan Hydractinia echinata (Coelenterata, Hydrozoa). Dev. Biol., 163(2):440-446.
2.Takahashi T, Muneoka Y, Lohmann J, Lopez de Haro MS, Solleder G, Bosch TC, David CN, Bode HR, Koizumi O, Shimizu H, Hatta M, Fujisawa T, Sugiyama T (1997). Systematic isolation of peptide signal molecules regulating development in hydra: LWamide and PW families. PNAS., 94(4):1241-1246.
3.Leitz T, Marion Lay M (1995). Metamorphosin A is a neuropeptide. Development Genes and Evolution, 204(4):276-279.
4.Schmich J, Trepel S, Leitz T (1998). The role of GLWamides in metamorphosis of Hydractinia echinata . Development Genes and Evolution, 208(5):267-273.
5.Mokady O, Dick MH, Lackschewitz D, Schierwater B, Buss LW ,(1998). Over one-half billion years of head conservation? Expression of an ems class gene in Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa). PNAS., 95(7):3673-3678.
6.Tarrant AM (2006). Hormonal Signaling in Cnidarians. Ecotoxicology., 1:2-24
7.Leitz T (2001). Endocrinology of the Cnidaria: State of the art. Zoology-Analysis of
Complex Systems, 103:202-221.
8. Darmer D, Hauser F, Nothacker H, Bosch T, Williamson M, Grimmelikhuijzen CJP. (1998). Three different prohormones yield a variety of Hydra-RFamide (Arg-Phe-NH2) neuropeptides in Hydra magnipapillata. Biochem. J., 332: 403-412.
Please visit our Blog on Blogspot Bio-Synthesis
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Please visit our Blog on Blogspot Bio-Synthesis
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Founded in 1984, Bio-Synthesis, Inc. was first known as OCS Laboratories. It was the first producer of commercially available synthetic DNA and, in 1985, became a producer of synthetic peptides. In 1989, OCS incorporated as Bio-Synthesis, Inc. and moved its laboratories to Lewisville, Texas. Today, BSI occupies 10,000 square feet of modern laboratory space (completed in 1995) located 20 miles from downtown Dallas and 10 miles from D/FW airport. Among the surrounding academic institutions are: University of Texas Southwestern Medical School (12 miles), University of North Texas (10 miles), and University of North Texas Health Science Center (25 miles). These universities provide excellent library resources. Since its inception, BSI has steadily expanded its product lines and services to meet the growing needs of the molecular biology community. It has maintained its position as an aggressive, innovative company in a highly competitive marketplace without sacrificing quality. In the beginning, our primary emphasis was on synthesizing high quality DNA primers and linkers, which were the initial uses of oligos. Today, newer technologies, such as gene construction, PCR, mutagenesis, combinatorial libraries, dye/adduct labeling, DNA microarrays, peptide-nucleic acid chimeras, etc. have challenged the molecular biology field. In response, BSI has branched into several related areas including DNA paternity testing, DNA HLA typing, PNA synthesis, genomic sequencing, fluorescence-based genotyping, custom organic synthesis and other molecular biology based applications.
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Founded in 1984, Bio-Synthesis, Inc. was first known as OCS Laboratories. It was the first producer of commercially available synthetic DNA and, in 1985, became a producer of synthetic peptides. In 1989, OCS incorporated as Bio-Synthesis, Inc. and moved its laboratories to Lewisville, Texas. Today, BSI occupies 10,000 square feet of modern laboratory space (completed in 1995) located 20 miles from downtown Dallas and 10 miles from D/FW airport. Among the surrounding academic institutions are: University of Texas Southwestern Medical School (12 miles), University of North Texas (10 miles), and University of North Texas Health Science Center (25 miles). These universities provide excellent library resources. Since its inception, BSI has steadily expanded its product lines and services to meet the growing needs of the molecular biology community. It has maintained its position as an aggressive, innovative company in a highly competitive marketplace without sacrificing quality. In the beginning, our primary emphasis was on synthesizing high quality DNA primers and linkers, which were the initial uses of oligos. Today, newer technologies, such as gene construction, PCR, mutagenesis, combinatorial libraries, dye/adduct labeling, DNA microarrays, peptide-nucleic acid chimeras, etc. have challenged the molecular biology field. In response, BSI has branched into several related areas including DNA paternity testing, DNA HLA typing, PNA synthesis, genomic sequencing, fluorescence-based genotyping, custom organic synthesis and other molecular biology based applications.
The Research and Development Division comprises a number of Ph.D. and M.D. professionals with backgrounds in molecular biology, immunology, nucleic acids, peptide synthesis, general organic chemistry, and automated amino acid sequencing. The Molecular Biology Division is set up to handle most modern experimental procedures; the Immunology Division specializes in immunodiagnostic-based reagents.
Not only has BSI continued to provide quality DNA products and services for the research community, but it has also become a world leader in providing custom peptide products and services. Using state-of-the-art solid phase peptide chemistries, BSI provides high quality custom peptides, performs carrier conjugations, antipeptide antibody production, antigenic peptide design, synthesis of long and/or modified peptides, MALDI TOF analysis, contract research, consultation services and more.
Biomedical researchers worldwide in universities, biotech companies, private clinics, and government agencies use products from Bio-Synthesis, Inc. in studies ranging from PCR diagnostics to cancer research and the Human Genome Project. Contact us to discover how BSI can customize products/services to suit your research requirements.
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Please Contact Us :
Address: 612 E. Main street
City: Lewisville
State: Texas
Country: USA
Postal Code: 75057
Phone Number: 972-420-8505
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BIO-SYNTHESIS, INC., is a leading life science products company with over 20 years of experience in the design and synthesis of Custom Peptide, small molecules and reagents for small scale research and bulk pharmaceutical trials. Using state of the art technology in our well-equipped laboratories.
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