Partial purification of prolactin-like substance from snake (Ptyas mucosa) pituitaries.

@article{Ng1990PartialPO,
  title={Partial purification of prolactin-like substance from snake (Ptyas mucosa) pituitaries.},
  author={Tzi Bun Ng and H M Lee and C. H. K. Cheng and C. C. Wong},
  journal={Endocrinologia japonica},
  year={1990},
  volume={37 6},
  pages={
          777-86
        }
}
Pituitary extract of the common rat snake (Ptyas mucosa) was found to be capable of displacing the binding of 125I-labelled ovine prolactin to female rat liver membranes, suggesting the presence of prolactin-like substance in snake pituitary. The snake prolactin-like substance was unadsorbed on Concanavalin A-Sepharose, but adsorbed on DEAE-cellulose. The partially purified snake prolactin-like substance was also capable of displacing the binding of 125I-labelled ovine prolactin to snake kidney… Expand
2 Citations
Study on the purification of growth hormone-like substance from pituitaries of the snake Ptyas mucosa.
Extract from the snake (Ptyas mucosa) pituitaries was capable of inhibiting the binding of 125I-labelled bovine growth hormone to female rat liver membranes. The growth hormone-like substance was notExpand
Hormones and Reproductive Cycles in Snakes
TLDR
This chapter attempts to provide a broad overview of the effects of hormones on reproduction in snakes, focusing on seminal studies, and Suggestions for future research are provided. Expand

References

SHOWING 1-10 OF 17 REFERENCES
Purification and characterization of toad prolactin.
TLDR
Toad PRL obtained is as potent as bovine PRL in promoting collagen synthesis in the bullfrog tadpole tail fin and also closely resembles that of bullfrog PRL. Expand
Isolation and properties of teleost prolactin.
TLDR
The data show that Tilapia PRL has features common to both mammalian PRLs and GHs as well as to Tilapsia GH, lending support to the hypothesis that PRL and GH originated from a common ancestral molecule. Expand
Purification and biological characterization of chinook salmon prolactin.
TLDR
The prolactin character of the purified protein was established by its lactogenic activity in the rabbit mammary gland in vitro and its sodium-retaining activity in hypophysectomized Fundulus heteroclitus. Expand
Purification and properties of an avian prolactin.
TLDR
The amino acid composition of the purified avian Prolactin closely resembles that of mammalian prolactin preparations and the isoelectric point is also similar in both cases. Expand
Biochemical and immunological characterization of pituitary hormones from the ostrich (Struthio camelus).
TLDR
Ostrich hormones show closer affinities to other avian hormones than to mammalian or reptilian species in some respects, but notable biochemical differences are also evident among the few avian species examined. Expand
Properties of a prolactin receptor from the rabbit mammary gland.
Receptors for human, simian, ovine, bovine and murine prolactin, human growth hormone and human placental lactogen have been identified in plasma-membrane-containing subcellular particles isolatedExpand
Isolation and properties of sea turtle (Chelonia mydas) pituitary prolactin.
TLDR
Biologically, sea turtle PRL was active in pigeon crop-sac assay but the dose-response characteristics were nonparallel when compared to ovine PRL, and several purified mammalian PRLs showed minimal or no ability to cross-react in the RIA. Expand
Isolation and properties of chum salmon prolactin.
A highly purified prolactin (PRL) was isolated from the chum salmon pituitary by extraction with acid acetone, gel filtration on Sephadex G-25 and ion-exchange chromatography on CM-Sephadex C-25 withExpand
Isolation of prolactin from salmon pituitary.
TLDR
The results suggest that the higher molecular weight proteins are aggregates formed during isolation but the 23,000 molecular weight protein may be a modified form of the unadsorbed prolactin. Expand
Purification and properties of reptilian and amphibian growth hormones.
TLDR
Characterization studies with high purified growth hormone isolated from the pituitaries of two reptilian species and two amphibian species indicate that many elements of growth hormone structure have been strongly conserved during evolution. Expand
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