Telomeres are made up of thousands of repeats of the same DNA sequence, bound by a special set of proteins called shelterin. They are often described using the helpful analogy of an aglet of a shoelace, which prevents the end of the lace from fraying. It is normal for telomeres to shorten as we age.
What describes a telomere?
Telomeres are distinctive structures found at the ends of our chromosomes. They consist of the same short DNA sequence repeated over and over again. … In humans the telomere sequence is TTAGGG. This sequence is usually repeated about 3,000 times and can reach up to 15,000 base pairs? in length.
What is another name for telomeres?
Telomerase, also called terminal transferase, is a ribonucleoprotein that adds a species-dependent telomere repeat sequence to the 3′ end of telomeres. A telomere is a region of repetitive sequences at each end of the chromosomes of most eukaryotes.
What are the telomeres and why are they important?
Telomeres, the specific DNA–protein structures found at both ends of each chromosome, protect genome from nucleolytic degradation, unnecessary recombination, repair, and interchromosomal fusion. Telomeres therefore play a vital role in preserving the information in our genome.
What do telomeres do for the body?
A telomere is a repeating DNA sequence (for example, TTAGGG) at the end of the body’s chromosomes. The telomere can reach a length of 15,000 base pairs. Telomeres function by preventing chromosomes from losing base pair sequences at their ends. They also stop chromosomes from fusing to each other.
What food contains telomerase?
Telomere length is positively associated with the consumption of legumes, nuts, seaweed, fruits, and 100% fruit juice, dairy products, and coffee, whereas it is inversely associated with consumption of alcohol, red meat, or processed meat [27,28,33,34].