Recombinant Proteins

p53
LBP
CEA
HLA
TCL
TTC
NPM
MAF
Bax
BID

RB1 Human

Retinoblastoma Associated Protein Human Recombinant

Retinoblastoma Human Recombinant fused with 6X His tag produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and having a molecular mass of 16.5 kDa.
The Retinoblastoma is purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT14178
Source
Escherichia Coli.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.

RBBP4 Human

Retinoblastoma Binding Protein 4 Human Recombinant

RBBP4 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 449 amino acids (1-425 a.a) and having a molecular mass of 50.2kDa.
RBBP4 is fused to a 24 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT14247
Source
E.coli.
Appearance
Sterile Filtered colorless solution.

RBBP9 Human

Retinoblastoma Binding Protein 9 Human Recombinant

RBBP9 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 206 amino acids (1-186 a.a.) and having a molecular mass of 23.1kDa.
RBBP9 is fused to a 20 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT14319
Source
E.coli.
Appearance
Sterile Filtered colorless solution.
Definition and Classification

Retinoblastoma is the most common malignant intraocular tumor in children, primarily affecting the retina . It can be classified into two main types based on its presentation:

  • Unilateral Retinoblastoma: Affects one eye and constitutes about 60-75% of cases .
  • Bilateral Retinoblastoma: Affects both eyes and is almost always hereditary .

Retinoblastoma can also be classified based on its spread:

  • Intraocular Retinoblastoma: Confined within the eye .
  • Extraocular Retinoblastoma: Spread outside the eye, further divided into orbital and metastatic retinoblastomas .
Biological Properties

Retinoblastoma arises from the nuclear layer of the retina and exhibits different growth patterns: endophytic, exophytic, and mixed . The key biological properties include:

  • Expression Patterns: The RB1 gene is crucial, and its inactivation leads to the development of retinoblastoma .
  • Tissue Distribution: Primarily affects the retina but can spread to other parts of the eye and beyond in advanced stages .
Biological Functions

The primary biological functions of the retinoblastoma protein (pRB) include:

  • Cell Cycle Control: pRB regulates the cell cycle by inhibiting cell cycle progression until the cell is ready to divide .
  • Genome Integrity: Preserves genome integrity and mediates differentiation .
  • Apoptosis: Protects cells from apoptosis .
Modes of Action

The mechanisms of action of pRB involve interactions with various molecules and cells:

  • Binding Partners: pRB interacts with E2F transcription factors, cyclin-dependent kinases (Cdks), and other proteins .
  • Downstream Signaling Cascades: pRB’s phosphorylation status affects its interaction with binding partners, influencing cell cycle progression and other cellular processes .
Regulatory Mechanisms

The expression and activity of pRB are controlled by several regulatory mechanisms:

  • Transcriptional Regulation: The RB1 gene is regulated at the transcriptional level by various factors .
  • Post-Translational Modifications: pRB undergoes phosphorylation, acetylation, and other modifications that influence its function .
Applications

Retinoblastoma has several applications in biomedical research, diagnostics, and therapeutics:

  • Biomedical Research: Advances in genetics and molecular biology have improved our understanding of retinoblastoma .
  • Diagnostic Tools: Molecular markers and genomic analysis aid in early detection and prognosis .
  • Therapeutic Strategies: Targeted therapies, gene therapy, and novel drugs are being explored for treating retinoblastoma .
Role in the Life Cycle

Retinoblastoma plays a significant role throughout the life cycle:

  • Development: The RB1 gene is crucial for normal retinal development .
  • Aging and Disease: Mutations in the RB1 gene can lead to uncontrolled cell growth and tumor formation .
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