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Retinal pigment epithelium-specific 65 kDa protein (RPE65) is an essential vision protein, and so mutations in the RPE65 gene cause blindness. However, clinical trials using gene therapy to treat patients with a defective RPE65 gene suggest that some vision may be restored.

There are two opposing sides to the controversial cysteine/glutamate antiporter. On one hand, it can be viewed a guardian of the cell, protecting it from the damaging oxidative stress that can cause cell death and even cancer. But, conversely, it has a dark side, actually facilitating cancer in a number of ways.

Acromegaly is a rare life-shortening disease caused by elevated levels of growth hormone (GH) secreted by a tumor on the pituitary gland. Treatments include somatostatin analogs, which activate somatostatin receptor 2 (SSTR2), reducing GH secretion and tumor size.

Caspase 9 (also termed ICE-LAP6, Mch6, Apaf-3) is a member of cysteine protease family of caspases and is encoded by the CASP9 gene in humans. Caspase-9 is involved in mitochondrial apoptosis pathway and is an initiator caspase.

Toll-like receptor 9 (TLR9) is a protein encoded by TLR9 gene in humans. It is also known as cluster of differentiation 289 (CD289) and is a member of TLR family.

Toll-like receptor 7 (TLR7) is a protein encoded by the TLR7 gene in humans and is a member of TLR family. TLRs controls host immune response against pathogens (e.g. viruses, bacteria and fungi) through recognition of pathogen-associated molecular patterns (PAMPs) which are specific to the microorganisms.

RAD51 is a recombinase protein encoded by RAD51 gene in humans. Human RAD51 family members are highly similar to bacterial RecA and yeast Rad51, both biochemically and structurally. It is a 339-amino acid protein that plays an important role in homologous recombination (HR) of DNA during double-strand break (DSB) repair.

Growth Associated Protein 43 (GAP43), also termed B-50, F1 or P-57, is a neuron-specific cytoplasmic protein encoded by the GAP-43 gene in humans. The expression of GAP 43 is associated with neural development and synaptic plasticity. A high level of GAP43 expression is observed in neuronal growth cones during development, at axonal regeneration after injury and is phosphorylated after long-term potentiation (1).

 Ovarian carcinoma is disease that eludes early diagnosis and has a high mortality rate. In a diagnosis of ovarian carcinoma, one of the most common problems is to distinguish between a primary ovarian and colorectal adenocarcinoma (1).

Actin is a ubiquitous and an essential component of the cytoskeleton, with critical roles in a wide range of cellular processes. It is abundant protein whose monomers polymerize into polarized actin filaments, within epithelial cells. Filamentous actin is concentrated at the plasma membrane where a wide variety of actin-associated proteins harness the potential and structure of actin filaments to moderate functions at the plasma membrane (1).