Cistron
A segment of DNA that encodes a single polypeptide chain or protein.
Symbol | |
---|---|
HGNC ID | |
Alternative symbols | – |
Entrez Gene | |
OMIM | |
RefSeq | – |
UniProt | – |
Chromosome | – |
Locus supplementary data | – |
A cistron is a segment of DNA that encodes a single polypeptide chain or protein. The term "cistron" is synonymous with "gene" in the context of molecular biology.
Structure and Function[edit | edit source]
A cistron is defined by its ability to produce a functional product, typically a protein, through the processes of transcription and translation. Each cistron contains a sequence of nucleotides that includes a promoter, a coding sequence, and a terminator.
Promoter[edit | edit source]
The promoter is a region of DNA that initiates transcription of a particular gene. Promoters are located near the transcription start sites of genes and can be about 100–1000 base pairs long.
Coding Sequence[edit | edit source]
The coding sequence of a cistron is the portion of a gene's DNA or RNA that codes for protein. The coding sequence is composed of exons and is translated into a sequence of amino acids.
Terminator[edit | edit source]
The terminator is a section of nucleic acid sequence that marks the end of a gene or operon in genomic DNA during transcription.
Cistron vs. Gene[edit | edit source]
While the term "cistron" is often used interchangeably with "gene," it specifically refers to the functional unit of heredity that encodes a single polypeptide. In contrast, a gene may include multiple cistrons, especially in eukaryotic organisms where genes can be split into multiple exons and introns.
Historical Context[edit | edit source]
The concept of the cistron was introduced by Seymour Benzer in the 1950s as a way to describe the functional units of genetic material. Benzer's work on the rII locus of bacteriophage T4 helped to elucidate the fine structure of genes.
See Also[edit | edit source]
References[edit | edit source]
External Links[edit | edit source]
Transform your life with W8MD's budget GLP1 injections from $125 and up biweekly
W8MD offers a medical weight loss program NYC and a clinic to lose weight in Philadelphia. Our W8MD's physician supervised medical weight loss centers in NYC provides expert medical guidance, and offers telemedicine options for convenience.
Why choose W8MD?
- Comprehensive care with FDA-approved weight loss medications including:
- loss injections in NYC both generic and brand names:
- weight loss medications including Phentermine, Qsymia, Contrave, Diethylpropion etc.
- Accept most insurances for visits or discounted self pay cost.
- Generic weight loss injections starting from just $125.00 for the starting dose
- In person weight loss NYC and telemedicine medical weight loss options in New York city available
Book Your Appointment
Start your NYC weight loss journey today at our NYC medical weight loss, and Philadelphia and visit Philadelphia medical weight loss Call (718)946-5500 for NY and 215 676 2334 for PA
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's NYC physician weight loss.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available. Call 718 946 5500.
Advertise on WikiMD
WikiMD's Wellness Encyclopedia |
Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates, categories Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD