Recombinant Proteins

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ORM2 Human, sf9

Orosomucoid 2 Human Recombinant, sf9

Recombinant Human ORM2, expressed in Sf9 insect cells using a baculovirus system, is a single, glycosylated polypeptide chain. It consists of 192 amino acids (residues 19-201), resulting in a molecular weight of 22.7 kDa. However, on SDS-PAGE, it appears between 28-40 kDa due to glycosylation. The protein contains a C-terminal 6-His tag to facilitate purification, which is achieved through proprietary chromatographic methods.
Shipped with Ice Packs
Cat. No.
BT21037
Source
Sf9, Baculovirus cells.
Appearance
A clear solution that has been sterilized by filtration.

ORM1

Orosomucoid 1 Human Recombinant

Recombinant human ORM1, expressed in E. coli, is a non-glycosylated polypeptide chain comprising 184 amino acids (residues 19-201) with a molecular weight of 21.7 kDa. The purification process of ORM1 involves proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT21112
Source
E.coli.
Appearance
Clear, colorless, and sterile-filtered solution.

ORM1 Human

Orosomucoid 1 Human

Human Orosomucoid 1, derived from pooled human serum, has a molecular mass of 21.56 kDa (excluding glycosylation) and consists of 183 amino acid residues.
Shipped with Ice Packs
Cat. No.
BT21170
Source
Human pooled serum.
Appearance
White lyophilized (freeze-dried) powder, filtered for purity.

ORM1 Human, HEK

Orosomucoid 1 Human Recombinant, HEK

Recombinant Human ORM1, expressed in HEK cells, is a polypeptide chain consisting of 189 amino acids (residues 19-201). It has a molecular weight of 22.4 kDa and includes a 6-amino acid Histidine tag fused to the C-terminus. Purification is achieved through proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT21227
Source

HEK293

Appearance
The product is a sterile-filtered solution, appearing colorless.

ORM2 Human

Orosomucoid 2 Human Recombinant

Recombinant human ORM2, produced in E.coli, is a non-glycosylated polypeptide chain consisting of 208 amino acids (19-201). With a molecular weight of 24.3kDa, this ORM2 protein includes a 25 amino acid His-tag fused at its N-terminus.
Shipped with Ice Packs
Cat. No.
BT21285
Source
Escherichia Coli.
Appearance
A clear solution that has undergone sterile filtration.
Definition and Classification

Orosomucoid, also known as alpha-1-acid glycoprotein (AGP), is an acute-phase protein found in plasma. It is an alpha-globulin glycoprotein modulated by two polymorphic genes . Orosomucoid is primarily synthesized in hepatocytes and has a normal plasma concentration between 0.6–1.2 mg/mL, accounting for 1–3% of plasma proteins .

Biological Properties

Key Biological Properties: Orosomucoid has a molecular weight of 37–54 kDa and a low isoelectric point (pI) of 2.8–3.8. It is heavily glycosylated, with carbohydrate content making up 45% of its structure .

Expression Patterns: Orosomucoid is mainly synthesized by the liver, but many extrahepatic tissues also produce it under various physiological and pathological conditions .

Tissue Distribution: While predominantly found in plasma, orosomucoid is also expressed in other tissues such as the brain and adipose tissue .

Biological Functions

Primary Biological Functions: Orosomucoid acts as an acute-phase reactant and disease marker. It modulates immunity, binds and carries drugs, maintains the barrier function of capillaries, and mediates sphingolipid metabolism .

Role in Immune Responses: Orosomucoid plays a crucial role in modulating immune responses by interacting with immune cells and influencing their activity .

Pathogen Recognition: It is involved in the recognition and response to pathogens, contributing to the body’s defense mechanisms .

Modes of Action

Mechanisms with Other Molecules and Cells: Orosomucoid interacts with various molecules and cells, including binding to receptors such as CCR5, Siglect-5, and HBB on macrophages, neutrophils, and liver parenchymal cells .

Binding Partners: It binds to basic and neutrally charged lipophilic compounds, including drugs, steroids, and protease inhibitors .

Downstream Signaling Cascades: Orosomucoid influences downstream signaling pathways, such as the MEK/ERK pathway, which is essential for angiogenesis .

Regulatory Mechanisms

Transcriptional Regulation: The expression of the orosomucoid gene is controlled by major regulatory mediators, including glucocorticoids, interleukin (IL)-1, TNF-α, and IL-6 .

Post-Translational Modifications: Orosomucoid undergoes extensive glycosylation, which affects its structure and function .

Applications

Biomedical Research: Orosomucoid is used as a marker in various research studies to understand its role in diseases and immune responses .

Diagnostic Tools: It serves as a biomarker for inflammatory conditions and certain diseases, aiding in diagnosis .

Therapeutic Strategies: Orosomucoid’s ability to modulate immune responses and bind to drugs makes it a potential target for therapeutic interventions .

Role in the Life Cycle

Development to Aging and Disease: Orosomucoid levels can vary throughout the life cycle. It increases in response to certain diseases, drug use, and pregnancy . Its role in maintaining immune homeostasis and modulating inflammation is crucial from development through aging .

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