Recombinant Chicken GH Protein

Beta LifeScience SKU/CAT #: BL-2285PS

Recombinant Chicken GH Protein

Beta LifeScience SKU/CAT #: BL-2285PS
Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

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Product Overview

Tag N/A
Host Species Chicken
Synonym GH1, GH, GHN, GH-N, hGH-N,Pituitary GH, GH 1,
Background GH is a member of the prolactin family of 60 which play an important role in growth control. The gene, along with four other related genes, is located at theGH locus on chromosome 17 where they are interspersed in the same transcriptional orientation; an arrangement which is thought to have evolved by a series of gene duplications. The five genes share a remarkably high degree of sequence identity. Alternative splicing generates additional isoforms of each of the five GHs, 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 four genes in theGH locus. Mutations in or deletions of the gene lead toGH deficiency and short stature.
Description GH Chicken Recombinant expressed in E.Coli is a single, non-glycosylated, polypeptide chain containing 191a.a. with an additional Ala at its N-terminus and having a molecular weight of 22255 Dalton. GH Chicken recombinant is purified by unique purification methods.
Source E.coli
AA Sequence The sequence of the first five N-terminalaa was determined and was found to be Ala-Thr-Phe-Pro-Ala.
Purity >99.0% as determined by:(a) Analysis by SDS-PAGE gel.(b) Analysis by SEC-HPLC.
Endotoxin <1.0 EU per μg by the LAL method.
Bioactivity GH Chicken Recombinantis fully biologically active in homologous assays and in PDF-P1 3B9 cells stably transfected with rabbit GH receptors.
Formulation The protein was lyophilized from a concentrated (1mg/ml) solution with 0.3% NaHCO3 adjusted to pH 8.
Stability Recombinant protein is stable for 12 months at -70°C
Usage For Research Use Only
Storage Lyophilized GH Chicken although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 mg/ml and filter sterilization GH can be stored at 4°C for several weeks. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is recommended.Please prevent freeze-thaw cycles.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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