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Lungfish Neurohypophysial Hormones: Chemical identification of Mesotocin in the Neurointermediate Pituitary of the Australian Lungfish Neoceratodus forsteri
- Source :
- General and Comparative Endocrinology. 91:330-336
- Publication Year :
- 1993
- Publisher :
- Elsevier BV, 1993.
-
Abstract
- The neurohypophysial hormones contained in the neurointermediate lobe of the pituitary of the Australian lungfish Neoceratodus forsteri have been investigated. Mesotocin was identified by coelution with the synthetic peptide in high-pressure liquid chromatography, by Edman amino acid sequencing, by mass spectrometry, by C-terminal sequencing through carboxypeptidase Y, and cleavage with prolyl endopeptidase. Vasotocin, if present, would be in very small amounts and hydrins were not detected. Oxytocin appears absent. Although Neoceratodus and Protopterus have different habitats, the former being permanently aquatic, the latter burrowing during estivation, the proportions of neurohypophysial hormones stored in neurohypophysis were roughly similar in the two species and not apparently affected by environmental conditions.
- Subjects :
- Pituitary gland
Molecular Sequence Data
Vasotocin
Carboxypeptidases
Peptide hormone
Oxytocin
Mass Spectrometry
chemistry.chemical_compound
Endocrinology
Pituitary Gland, Posterior
Species Specificity
Prolyl endopeptidase
medicine
Animals
Amino Acid Sequence
Chromatography, High Pressure Liquid
Protopterus
Lungfish
biology
Hydrolysis
Serine Endopeptidases
Fishes
biology.organism_classification
Carboxypeptidase
Molecular Weight
Pituitary Hormones
medicine.anatomical_structure
chemistry
Biochemistry
biology.protein
Aestivation
Female
Animal Science and Zoology
Prolyl Oligopeptidases
medicine.drug
Subjects
Details
- ISSN :
- 00166480
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- General and Comparative Endocrinology
- Accession number :
- edsair.doi.dedup.....dffb4602dfadac7f6aa9f8da3c987512