Name
GH Antagonist Rat Protein
Cat. No.
MAG-2008
Tag/Conjugates
His
Source
Escherichia coli.
Shipping
At Room Temperature
Description
Rat Growth Hormone Anatagonist produced in E.Coli is a single, non-glycosylated polypeptide chain containing 191 amino acids and having a molecular mass of 22 kDa. GH Antagonist Rat is purified by proprietary chromatographic techniques.
Synonyms
GH1, GH, GHN, GH-N, hGH-N, Pituitary growth hormone, Growth hormone 1, Somatotropin.
Introduction
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Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
The protein was lyophilized from a concentrated (1mg/ml) solution with 0.0045M NaHCO3.
Stability
Lyophilized GH Antagonist Rat although stable at room temperature for at least two weeks, should be stored desiccated below -18°C. Upon reconstitution and filter sterilization GH can be stored at 4°C, pH 9 for up to 4 weeks. For long term storage and more diluted solutions it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.
Purity
Greater than 98.0% as determined by: (a) Analysis by RP-HPLC (b) Analysis by Gel Filtration. (c) Analysis by SDS-PAGE.
Biological Activity
Plays a role as antagonist using an in vitro bioassay in PDF-P1 3B9 cells stably transfected with rabbit GH receptors. It is capable of forming a 1:1 complex with the recombinant ovine growth hormone receptor extracellular domain and binds to this ECD with affinity similar the the wild type rGH.
Amino acid sequence
The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Phe-Pro-Ala-Met.
Usage
Mabioway's Co., Ltd 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.
Background
GH is a member of the somatotropin/prolactin family of hormones which play an important role in growth control. The gene, along with 4 other related genes, is located at the growth hormone locus on chromosome 17 where they are interspersed in the same transcriptional orientation; an arrangement which was evolved by a series of gene duplications. The 5 genes share a remarkably high degree of sequence identity. Alternative splicing generates additional isoforms of each of the 5 growth hormones, leading to further diversity and potential for specialization. This particular family member is expressed in the pituitary but not in placental tissue as is the case for the other 4 genes in the growth hormone locus.
Solubility
It is recommended to reconstitute the lyophilized GH Antagonist Rat in 0.4% NaHCO3 or water adjusted to pH 9, not less than 100µg/ml, which can then be further diluted to other aqueous solutions, preferably in a presence of a carrier protein such as BSA or similar.
