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Quinoxalines
|
D011810 |
|
|
Quinpirole
|
D019257 |
[A dopamine D2/D3 receptor agonist.
] |
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Quintuplets
|
D011811 |
[Five individuals derived from five FETUSES that were fertilized at or about the same time, developed in the UTERUS simultaneously, and born to the same mother.
] |
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Quinuclidines
|
D011812 |
|
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Quinuclidinyl Benzilate
|
D011813 |
[A high-affinity muscarinic antagonist commonly used as a tool in animal and tissue studies.
] |
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Quipazine
|
D011814 |
[A pharmacologic congener of serotonin that contracts smooth muscle and has actions similar to those of tricyclic antidepressants. It has been proposed as an oxytocic.
] |
|
Quisqualic Acid
|
D016318 |
[An agonist at two subsets of excitatory amino acid receptors, ionotropic receptors that directly control membrane channels and metabotropic receptors that indirectly mediate calcium mobilization from intracellular stores. The compound is obtained from the seeds and fruit of Quisqualis chinensis.
] |
|
Quorum Sensing
|
D053038 |
[A phenomenon where microorganisms communicate and coordinate their behavior by the accumulation of signaling molecules. A reaction occurs when a substance accumulates to a sufficient concentration. This is most commonly seen in bacteria.
, Inhibition of quorum sensing (signaling molecules) by degradation enzymes.
] |
|
R Factors
|
D011815 |
[A class of plasmids that transfer antibiotic resistance from one bacterium to another by conjugation.
] |
|
R-Loop Structures
|
D000080870 |
[An RNA-DNA hybrid structure formed when newly transcribed RNA remains bound to its DNA template. Stability of R-loops may play a role in GENETIC INSTABILITY.
] |
|
R-SNARE Proteins
|
D050683 |
[SNARE proteins where the central amino acid residue of the SNARE motif is an ARGININE. They are classified separately from the Q-SNARE PROTEINS where the central amino acid residue of the SNARE motif is a GLUTAMINE. This subfamily contains the vesicle associated membrane proteins (VAMPs) based on similarity to the prototype for the R-SNAREs, VAMP2 (synaptobrevin 2).
] |
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RANK Ligand
|
D053245 |
[A transmembrane protein belonging to the tumor necrosis factor superfamily that specifically binds RECEPTOR ACTIVATOR OF NUCLEAR FACTOR-KAPPA B and OSTEOPROTEGERIN. It plays an important role in regulating OSTEOCLAST differentiation and activation.
] |
|
RAW 264.7 Cells
|
D000067996 |
[A transformed macrophage cell line isolated from ASCITES of mice infected with ABELSON MURINE LEUKEMIA VIRUS.
] |
|
REM Sleep Behavior Disorder
|
D020187 |
[A disorder characterized by episodes of vigorous and often violent motor activity during REM sleep (SLEEP, REM). The affected individual may inflict self injury or harm others, and is difficult to awaken from this condition. Episodes are usually followed by a vivid recollection of a dream that is consistent with the aggressive behavior. This condition primarily affects adult males. (From Adams et al., Principles of Neurology, 6th ed, p393)
] |
|
REM Sleep Parasomnias
|
D020923 |
[Abnormal behavioral or physiologic events that are associated with REM sleep, including REM SLEEP BEHAVIOR DISORDER.
] |
|
RGS Proteins
|
D020710 |
[A large family of evolutionarily conserved proteins that function as negative regulators of HETEROTRIMERIC GTP-BINDING PROTEINS. RGS PROTEINS act by increasing the GTPase activity of the G alpha subunit of a heterotrimeric GTP-binding protein, causing it to revert to its inactive (GDP-bound) form.
] |
|
RING Finger Domains
|
D054829 |
[A zinc-binding domain defined by the sequence Cysteine-X2-Cysteine-X(9-39)-Cysteine-X(l-3)-His-X(2-3)-Cysteine-X2-Cysteine -X(4-48)-Cysteine-X2-Cysteine, where X is any amino acid. The RING finger motif binds two atoms of zinc, with each zinc atom ligated tetrahedrally by either four cysteines or three cysteines and a histidine. The motif also forms into a unitary structure with a central cross-brace region and is found in many proteins that are involved in protein-protein interactions. The acronym RING stands for Really Interesting New Gene.
] |
|
RNA
|
D012313 |
[A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
] |
|
RNA 3' End Processing
|
D026721 |
[The steps that generate the 3' ends of mature RNA molecules. For most mRNAs (RNA, MESSENGER), 3' end processing referred to as POLYADENYLATION includes the addition of POLY A.
] |
|
RNA 3' Polyadenylation Signals
|
D039104 |
[A hexanucleotide sequence found 10-30 nucleotides upstream of the site of polyandenylation of MRNA.
, Sequences found near the 3' end of MESSENGER RNA that direct the cleavage and addition of multiple ADENINE NUCLEOTIDES to the 3' end of mRNA.
] |
