What is the challenge with protein arrays?

The conjugation of proteins on a microarray can change the folding structure of the protein, destroying the antibody-antigen pairing and thus leading to a false negative result.

What are protein microarrays used for?

Functional protein microarrays (A) are used to study and identify new molecular interactions between proteins, small molecules or enzyme substrates, for example. Protein detecting microarrays (B) are used to identify proteins from complex mixtures.

What is the difference between DNA microarrays and protein microarrays?

The key difference between DNA and protein microarray is that DNA microarray is a collection of microscopic DNA spots attached to a solid surface like a glass slide, while protein microarray is an arrangement of purified proteins on a solid surface like a glass slide.

Which of these concerns would apply to functional protein microarrays but not antibody microarrays?

Which of these concerns would apply to functional protein microarrays but not antibody microarrays? Certain functions, such as structural support of a cell, may not be am mendable to analysis on a microarray. Functional protein microarrays can identify protein functions only if their sequence is known.

What are the limitations of DNA microarray?

The most significant disadvantages of microarrays include the high cost of a single experiment, the large number of probe designs based on sequences of low-specificity, as well as the lack of control over the pool of analyzed transcripts since most of the commonly used microarray platforms utilize only one set of …

What is the principle of protein microarray?

Protein microarray is based on the specific antigen‑antibody reaction, such as any enzyme‑linked immunosorbent assay, the specific reaction occurring on a miniaturized support (chip or slide), thus having the advantage of simultaneous evaluation of tens to thousands of molecules in small samples with a highly specific …

What is microarray technique?

Microarray technology is a developing technology used to study the expression of many genes at once. It involves placing thousands of gene sequences in known locations on a glass slide called a gene chip. A sample containing DNA or RNA is placed in contact with the gene chip.

What is protein binding microarray?

PBMs are as well-established microarray-based technique to study the in vitro binding of proteins to DNA [1–5]. PBM experiments involve applying protein to a double-stranded DNA microarray and then quantifying the amount of DNA-bound protein using a fluorescently labeled antibody.

What are the limitations of DNA microarray technology 3.1 4?

What are the limitations of DNA microarray technology? DNA microarray technology cannot tell you which gene or genes “went bad” to cause a disease, cure a disease, or identify every gene that is behaving inappropriately.

What is the advantage of DNA microarrays over other methods to study gene transcription?

The microarray assay is a powerful molecular technology that allows the simultaneous study of the expression of thousands of genes or their RNA products, giving an accurate picture of gene expression in the cell or the sample at the time of the study.

What is microarray study?

Why is microarray useful?

It helps especially in the identification of single-nucleotide polymorphisms (SNPs) and mutations, classification of tumors, identification of target genes of tumor suppressors, identification of cancer biomarkers, identification of genes associated with chemoresistance, and drug discovery.