| Webster's Online Dictionary |
| Expressions | Definition | ||
| Expressed sequence tag | An expressed sequence tag or EST is a short sub-sequence of a transcribed protein-coding or non-protein coding DNA sequence. It was originally intended as a way to identify gene transcripts, but has since been instrumental in gene discovery and sequence determination. An EST is produced by one-shot sequencing of a cloned mRNA, and the resulting sequence is a relatively low quality fragment whose length is limited by current technology to approximately 500 to 800 nucleotides. ESTs are also a useful resource for designing probes for DNA microarrays used to determine gene expression. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
| Expressions | Domain | Definition | |
| Expressed sequence tag | Biology & Biotechnology | The part of a sequence from a cDNA clone that corresponds to an mRNA. Source: European Union. (references) | |
| Expressed sequence tag | Environment | A unique stretch of DNA within a coding region of a gene that is useful for identifying full-length genes and serves as a landmark for mapping. (references) | |
| Expressed sequence tag | Medicine | Expressed sequence tags. Source: European Union. (references) | |
| Expressed sequence tag (EST) | Energy | A short strand of DNA that is a part of a cDNA molecule and can act as identifier of a gene. Used in locating and mapping genes. See also: cDNA, sequence tagged site. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
