The 3'ends of chromosomes are capped with telomere sequences (TTAGGG; 6-26 nucleotides in length) by ribonucleoprotein telomerase during DNA replication.
Telomerase is an unusual RNA-dependent DNA polymerase that uses and RNA component to specify the addition of telomere.
The telomeric RNA contains a sequence complementary to TTAGGG.
In ciliated protozoa and yeast, telomere length is maintained by regulating the activity of telomerase.
Many mammalian cells do not express telomerase resulting into shortening of telomere with each cell division, and ultimately causing the chromosomal instability, aging and cell death.
Approx.
4.8 kb of telomeric DNA is lost with each cell division resulting into large number of chromosomal abnormalities.
Purification of telomerase from the ciliate also revealed two protein of 43 and 123kD.
p123 is a homolog of yeast Est2 (Essential for Telomerase activity) and show 20% homology.
Mammalian homologs of yeast Est2 (also known as TP2 for Telomerase associated Protein 2; hEST2 or telomerase catalytic subunit or telomerase reverse transcriptase, TERT) have also been cloned.
Est2 is associated with telomerase activity and TP1.
Mouse/rat and human TP1 are 2627 and 2629 aa proteins, respectively (2).
Applications:Suitable for use in ELISA, Western Blotting.
Other applications not tested.
Recommended Dilution:Western Blot: 1:1000-1:5000 for neat serum and 1-10ug/ml for affinity pure using ECL.
A band of 95-110kD has been detected in brush border membrane (2)
ELISA:1:10,000-50,000 for neat serum and 0.5-1ug/ml for affinity purified.
Control peptide can be used to coat ELISA plates at 1ug/ml.
Optimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only.
For long-term storage and to avoid repeated freezing and thawing, aliquot and add glycerol (40-50%).
Freeze at -20°C.
Aliquots are stable for at least 12 months at -20°C.
For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Further dilutions can be made in assay buffer.
Sold under license from Geron
仕様
Size：100ul
Host：rabbit
Source Antibody：mouse
Grade：Serum
Purity：Serum
Form：Supplied as a lyophilized powder from PBS, 0.05% sodium azide.
Specificity：The 19 AA mouse control peptide is 100% homologous with rat and 89% with human TP1
Isotype：IgG
Calc Applications Abbrev：E WB
Calc Crossreactivity：Hu Mo Rt
Immunogen：A 19 AA Peptide sequence in the middle portion of Mouse TP1. The peptide was coupled to KLH
