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Recombinant bream Growth Hormone

Certificate of Analysis and Data Sheet

Source:
E.Coli

Catalog No.
CYT-297

Description :

Recombinant Bream GH produced in E.Coli is a single, non-glycosylated, polypeptide chain containing having a molecular mass of 21410.01 Dalton. Bream GH shares 97% amino acid sequence identity with gilthead sea bream, 94% with red sea bream, 93% with the tuna, 91% with barramundi and 63% with the salmon. The rbrGH is purified by proprietary chromatographic techniques.

Physical Appearance:

Sterile Filtered White lyophilized (freeze-dried) powder.

Formulation:

The protein (1mg/ml) was lyophilized after extensive dialyses against 5mM phosphate buffer, 5mg mannitol and 1mg glycine.

Solubility:

It is recommended to reconstitute the lyophilized rbrGH in sterile 18MΩ-cm H2O not less than 100ug/ml, which can then be further diluted to other aqueous solutions.

Stability:

Lyophilized rbrGH although stable at room temperature for 3 weeks, should be stored desiccated below -18 C. Upon reconstitution rbrGH should be stored at 4 C between 2-7 days and for future use below -18 C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please avoid freeze-thaw cycles.

Purity:

Greater than 95.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Anion-exchange FPLC.
(c) Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel.

Dimers and aggregates:

Less than 1% as determined by silver-stained SDS-PAGE gel analysis.

Endotoxin:

Less than 0.1 ng/ug (IEU/ug) of rbrGH.

Protein content:

Protein quantitation was carried out by two independent methods:
1. UV spectroscopy at 280 nm .
2. Analysis by RP-HPLC, using a standard solution of GH as a Reference Standard.

References:

Flint D. J. & Gardner M.J. (1993) J. Endocrinol., 137, 203-211.

Usage:

Prospec'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.


Gene:

Name:GH

Protein synonyms/aliases:

Somatotropin precursor (Growth hormone).

Protein Family:

Belongs to the somatotropin/prolactin family.

Protein Domains:


Domains:
IPR001400   Somatotropin hormone

Related proteins:

Recombinant Human Prolactin
Recombinant Ovine Prolactin
Recombinant Human Placental-Corr Growth Hormone-22K
Recombinant Human Pituitary Growth Hormone-20K
Recombinant Rat Growth Hormone
Recombinant Ovine Growth Hormone

Protein links:

Recombinant bream Growth Hormone protein domain

Recombinant bream Growth Hormone protein family


Precursor- Protein structure and amino acid sequence:


Latest Publications:

1. Expression studies on glucose-6-phosphate dehydrogenase in sea bream: effects of growth hormone, somatostatin, salinity and temperature.
J Exp Zoolog A Comp Exp Biol 2005 Aug 1;303(8):676-88
2. Growth hormone expression in ontogenic development in gilthead sea bream.
Cell Tissue Res 2003 Jul;313(1):81-91
3. Immunocytochemical and ultrastructural characterization of mammosomatotrope-, growth hormone-, and prolactin-cells from the gilthead sea bream (Sparus aurata l., Teleostei): an ontogenic study.
J Morphol 2003 Mar;255(3):347-57
4. Endocrine mediators of seasonal growth in gilthead sea bream (Sparus aurata): the growth hormone and somatolactin paradigm.
Gen Comp Endocrinol 2002 Sep;128(2):102-11
5. Identification of mammosomatotropes, growth hormone cells and prolactin cells in the pituitary gland of the gilthead sea bream (Sparus aurata L., Teleostei) using light immunocytochemical methods: an ontogenetic study.
Anat Embryol (Berl) 2000 Nov;202(5):421-9
6. Growth hormone as a function of age and dietary protein: energy ratio in a marine teleost, the gilthead sea bream (Sparus aurata).
Growth Regul 1996 Dec;6(4):253-9

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中華民國95年06月06日更新