Prolactin Human

Prolactin Human Recombinant
Cat. No.
BT30129
Source
Escherichia Coli.
Synonyms
Mammotropin, Luteotropic hormone, Luteotropin, PRL.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 95.0% as determined by:
(a) Analysis by SEC-HPLC.
(b) Analysis by SDS-PAGE.
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Prolactin Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 200 amino acids and having a molecular mass of 23007 Dalton.
The Prolactin is purified by proprietary chromatographic techniques.

Product Specs

Introduction
Prolactin, a neuroendocrine hormone primarily produced by the pituitary gland, plays a crucial role in lactation. Additionally, it is involved in various physiological processes such as breast cancer development, reproductive function regulation, and immunomodulation. Notably, prolactin synthesis also occurs in other cell types, including the placenta, brain, and uterus.
Description
Recombinant Human Prolactin, expressed in E.Coli, is a non-glycosylated polypeptide chain consisting of 200 amino acids. With a molecular weight of 23007 Daltons, this single-chain protein is purified using proprietary chromatographic techniques.
Physical Appearance
White, sterile-filtered powder obtained through lyophilization (freeze-drying).
Formulation
Lyophilization of the protein was carried out from a solution containing 1 mg/ml of the protein in a buffer composed of 10mM sodium phosphate (pH 8) and 50mM NaCl.
Solubility
To reconstitute the lyophilized Prolactin, it is recommended to dissolve it in sterile 18 MΩ-cm H2O at a concentration not less than 100 µg/ml. Further dilutions can be made using other aqueous solutions.
Stability
Lyophilized Prolactin remains stable for 3 weeks at room temperature. However, for long-term storage, it is recommended to store it desiccated below -18°C. After reconstitution, Prolactin should be stored at 4°C for 2-7 days. For prolonged storage, freezing below -18°C is advisable. To preserve its stability during long-term storage, adding a carrier protein like 0.1% HSA or BSA is recommended. It's important to avoid repeated freeze-thaw cycles.
Purity
The purity of Prolactin is determined to be greater than 95.0% using the following methods: (a) Size Exclusion Chromatography - High Performance Liquid Chromatography (SEC-HPLC) analysis, (b) Sodium Dodecyl Sulphate - Polyacrylamide Gel Electrophoresis (SDS-PAGE) analysis.
Biological Activity
The biological activity of Prolactin was assessed by measuring its ability to stimulate the proliferation of rat lymphoma, Nb2-11 cells. The ED50 value, representing the concentration at which 50% of the maximum proliferation was observed, was determined to be less than 0.065 ng/ml. This corresponds to a Specific Activity of 15,385,000 IU/mg.
Synonyms
Mammotropin, Luteotropic hormone, Luteotropin, PRL.
Source
Escherichia Coli.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Met-Leu-Pro-Ile-Cys.

Product Science Overview

Structure and Function

Prolactin is a protein hormone composed of 199 amino acids, with a molecular weight of approximately 23 kDa. It exists in both glycosylated and non-glycosylated forms. The hormone is known to stimulate milk production (lactation) during pregnancy and breastfeeding. Additionally, prolactin influences maternal behavior, reproductive functions, and has pleiotropic effects in both males and females .

Recombinant Human Prolactin

Recombinant human prolactin is produced using recombinant DNA technology, which involves inserting the prolactin gene into a host organism, such as Escherichia coli (E. coli) or HEK 293 cells, to produce the hormone in large quantities. This method ensures a high level of purity and biological activity, making it suitable for research and therapeutic applications .

Applications

Recombinant human prolactin is widely used in various research and clinical settings, including:

  • Cell Culture: It is used to study cell proliferation, differentiation, and functional assays.
  • Reproductive Studies: Prolactin’s role in reproductive functions makes it a valuable tool in studying fertility and related disorders.
  • Immunoregulation: Prolactin influences the proliferation and differentiation of lymphocytes, making it useful in immunological research.
  • Cancer Research: Prolactin’s involvement in breast cancer and other cancers is a significant area of study .
Production and Purity

Recombinant human prolactin is typically produced in a carrier-free form, meaning it does not contain bovine serum albumin (BSA) or other carrier proteins. This enhances protein stability and shelf-life, allowing it to be stored at more dilute concentrations. The purity of recombinant human prolactin is usually greater than 95%, with endotoxin levels below 0.1 ng/μg .

Storage and Stability

Recombinant human prolactin is lyophilized from a filtered solution and can be reconstituted in sterile conditions. It is shipped at ambient temperature and should be stored at -20 to -70 °C to maintain its stability. Once reconstituted, it can be stored at 2 to 8 °C for up to one month or at -20 to -70 °C for up to three months under sterile conditions .

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