chromosome, subtelomeric region
Definition
Target type: cellularcomponent
A region of the chromosome, adjacent to the telomere (on the centromeric side) that contains repetitive DNA and sometimes genes. This region is usually heterochromatin. [GOC:mah, PMID:18761674, PMID:22771823, PMID:26205977, PMID:7660126]
The subtelomeric region is a specialized region located at the ends of chromosomes, flanking the telomeres. These regions are characterized by unique structural and functional features, playing a crucial role in maintaining chromosome stability and integrity. They are typically rich in repetitive DNA sequences, including satellite DNA, transposable elements, and subtelomeric repeat sequences. These repetitive elements contribute to the complex structure and instability of subtelomeric regions, often undergoing rearrangements and recombination events. Subtelomeric regions also harbor genes, although at lower density than the rest of the chromosome. These genes often have specialized functions related to cell division, telomere maintenance, and DNA repair. The subtelomeric region is involved in several key processes, including: 1) **Telomere protection and maintenance:** Subtelomeric regions provide a buffer zone between the telomere and the coding regions of the chromosome, protecting the telomeres from degradation and ensuring their proper function. 2) **Chromosome stability:** The repetitive sequences in subtelomeric regions contribute to proper chromosome pairing and segregation during cell division. 3) **Gene regulation:** The unique chromatin structure of subtelomeric regions can influence the expression of nearby genes. 4) **Evolutionary adaptation:** Subtelomeric regions are hotspots for genetic variation and can contribute to the evolution of new genes and functions. The subtelomeric region is a fascinating and dynamic region of the chromosome, playing essential roles in maintaining genome integrity and contributing to cellular processes.'
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Proteins (1)
| Protein | Definition | Taxonomy |
|---|---|---|
| NAD-dependent protein deacetylase sirtuin-6 | An NAD-dependent protein deacylase sirtuin-6 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q8N6T7] | Homo sapiens (human) |
Compounds (9)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| niacinamide | nicotinamide : A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group. | pyridine alkaloid; pyridinecarboxamide; vitamin B3 | anti-inflammatory agent; antioxidant; cofactor; EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; Escherichia coli metabolite; geroprotector; human urinary metabolite; metabolite; mouse metabolite; neuroprotective agent; Saccharomyces cerevisiae metabolite; Sir2 inhibitor |
| pyrazinamide | pyrazinecarboxamide : A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of pyrazinoic acid (pyrazine-2-carboxylic acid) with ammonia. A prodrug for pyrazinoic acid, pyrazinecarboxamide is used as part of multidrug regimens for the treatment of tuberculosis. | monocarboxylic acid amide; N-acylammonia; pyrazines | antitubercular agent; prodrug |
| pyrazinoic acid | pyrazine-2-carboxylic acid : The parent compound of the class of pyrazinecarboxylic acids, that is pyrazine bearing a single carboxy substituent. The active metabolite of the antitubercular drug pyrazinamide. pyrazinoic acid: active metabolite of pyrazinamide; structure | pyrazinecarboxylic acid | antitubercular agent; drug metabolite |
| 1-(4-nitrophenyl)piperazine | 1-(4-nitrophenyl)piperazine: structure in first source | ||
| rubimaillin | rubimaillin : A benzochromene that is 2H-benzo[h]chromene which is substituted by two methyl groups at position 2, a methoxycarbonyl group at position 5, and a hydroxy group at position 6. Found in the Chinese medical plant Rubia cordifola, It has an anti-cancer effect by inhibition of TNF-alpha-induced NF-kappaB activation. It is also a dual inhibitor of acyl-CoA:cholesterol acyltransferase 1 and 2 (ACAT1 and ACAT2), but is more selective for the ACAT2 isozyme. rubimaillin: structure given in first source | benzochromene; methyl ester; phenols | acyl-CoA:cholesterol acyltransferase 2 inhibitor; anti-inflammatory agent; antineoplastic agent; apoptosis inducer; neuroprotective agent; NF-kappaB inhibitor; plant metabolite |
| 5-chloropyrazinamide | |||
| trichostatin a | trichostatin A: chelates zinc ion in the active site of histone deacetylases, resulting in preventing histone unpacking so DNA is less available for transcription; do not confuse with TRICHOSANTHIN which is a protein; found in STREPTOMYCES | antibiotic antifungal agent; hydroxamic acid; trichostatin | bacterial metabolite; EC 3.5.1.98 (histone deacetylase) inhibitor; geroprotector |
| (3R,5S)-fluvastatin | (3R,5S)-fluvastatin : A (6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid diastereoisomer in which the stereocentres beta- and delta- to the carboxy group have R and S configuration, respectively. The drug fluvastatin is an equimolar mixture of this compound and its enantiomer. | (6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid; statin (synthetic) | |
| ly2784544 | pyridazines |