All articles starting with R
22,461 articles
RACK1
RACK1 (receptor for activated C kinase 1), encoded by GNB2L1, is a 36-kDa WD40 repeat scaffold protein with a seven-bladed β-propeller. It anchors PKC, Src, and integrin signaling, sits on the 40S ribosomal subunit near the mRNA exit channel to regulate translation, and promotes or suppresses tumors depending on tissue context.
Racket (programming language)
Racket, formerly PLT Scheme, is a general-purpose, functional-first programming language, a Lisp dialect and Scheme descendant designed around building small problem-specific languages as easily as libraries.
Racket (sports equipment)
A racket, also spelled racquet, is a handled sports implement with a strung head used to strike a ball or shuttlecock in tennis, badminton, squash, and racquetball.
Racketeer Influenced and Corrupt Organizations Act
RICO, the Racketeer Influenced and Corrupt Organizations Act (18 U.S.C. §§1961–1968), a 1970 federal statute targeting organized crime through enterprise-and-pattern racketeering charges, 20-year-per-count penalties, and civil treble damages.
Racketeering
Racketeering, defined in US law by the 1970 RICO Act (18 U.S.C. 1961-1968), is conducting an enterprise through a pattern of at least two related predicate crimes such as mail or wire fraud, carrying 20-year-per-count penalties, forfeiture, and civil treble damages.
Racketlon
Racketlon, also known as mailapelit in Finland, is a sport combining table tennis, badminton, squash, and tennis, four sets to 21 points each, total points deciding; governed by the Federation of International Racketlon since 2002.
Raclette
Raclette: Swiss Valais dish and semi-hard cheese melted and scraped over boiled potatoes with pickled onions and gherkins; name from French racler, official since 1874, Raclette du Valais AOP since 2007.
Raclopride
Raclopride is a substituted benzamide acting as a potent, selective dopamine D2 receptor antagonist, best known as the carbon-11 PET tracer for imaging striatal D2 receptors.
Racomitrium lanuginosum
Racomitrium lanuginosum (Woolly Fringe-moss, còinneach gruaig chlòimhe) is a hoary, woolly Grimmiaceae moss dominating upland Racomitrium heath and scree, circumpolar and sub-Antarctic, with toothed hyaline leaf hair points and a 5°C photosynthesis optimum.
Racon
A racon, from RAdar beaCON, is a receiver-transmitter beacon mounted on navigational marks such as buoys and lighthouses that, when triggered by a ship's radar, replies with a Morse-coded signal identifying the mark.
Racotumomab
Racotumomab, also known as 1E10 and marketed as Vaxira, is an anti-idiotype monoclonal antibody cancer vaccine approved in Cuba and Argentina for non-small cell lung cancer.
Racquel Chevremont
Racquel Chevremont, American art curator, collector, and consultant from Brooklyn and the Bronx, formerly an Elite model; Deux Femmes Noires co-founder with Mickalene Thomas, Real Housewives of New York cast member, and curator of This Too Shall Pass (2023).
Racquetball
Racquetball, invented by Joseph Sobek in Connecticut around 1949-1950 as "paddle rackets," is an indoor four-wall racket sport; IRF founded 1979, IOC-recognized 1985, court 20x20x40 ft, balls over 150 mph.
Racquetball World Championships
The Racquetball World Championships are the top international racquetball competition for national teams, held every two years since 1981 and organized by the International Racquetball Federation.
Racquets
Racquets (rackets) is a four-walled-court ball sport played with strung racquets, contested at the Olympics only in 1908 in London, and the origin of squash; fewer than 30 courts remain in the USA and UK.
RACS study
RACS study (Risk in Acute Coronary Syndrome; Risk Markers in the Acute Coronary Syndromes, NCT00521976): single-center prospective Norwegian cohort of 871 chest-pain patients at Stavanger University Hospital, 2002-2003, studying risk markers, 24-month mortality, and recurrent troponin-T events.
RACSAM
RACSAM (Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas) is the Spanish Royal Academy of Sciences' mathematics journal, founded 2001 at volume 95, Springer-published since 2011, quarterly, first JCR decile.
Ractopamine
Ractopamine, a beta-adrenergic agonist feed additive (Paylean, Optaflexx), promotes growth and leanness in swine, cattle, and turkeys; FDA-approved in the US since 1999 but banned in the EU, China, and Russia over residue-limit disputes.
Rad (film)
Rad (1986) is a Hal Needham BMX racing drama starring Bill Allen as Cru Jones, competing in Helltrack for $100,000 and a Corvette; a box-office failure that became a BMX cult classic.
Rad Racer
Rad Racer, aka Highway Star (ハイウェイスター), is Square's 1987 pseudo-3D NES racing game with red-blue anaglyph 3D glasses, eight time-attack courses, Ferrari 328 or F1 cars, and music by Nobuo Uematsu.
RAD sequencing
RAD sequencing (RAD-seq) is a reduced-representation genotyping method that sequences DNA at restriction enzyme cut sites, widely used for genome-wide SNP discovery in non-model organisms.
RAD21
RAD21 (SCC1/Mcd1, CDLS4) is the human kleisin gene of the cohesin complex that holds sister chromatids together, mediates DNA repair and gene regulation; variants cause mild Cornelia de Lange syndrome and somatic changes drive cancers.
RAD23B
RAD23B (HR23B, HHR23B), human gene at 9q31.2 encoding a 409-amino-acid homolog of yeast Rad23; stabilizes XPC in global-genome nucleotide excision repair and shuttles ubiquitinated proteins to the 26S proteasome.
RAD50
RAD50 (hRad50, RAD502) is a human gene at 5q31.1 encoding the SMC-family ABC ATPase of the MRN DNA-repair complex; biallelic variants cause NBSLD, and heterozygous carriers show no increased breast cancer risk.
RAD51
RAD51, the central recombinase of homologous recombination DNA double-strand break repair; its nuclear foci form the RAD51 assay, a functional biomarker of homologous recombination deficiency predicting PARP inhibitor and platinum response in cancer.
RAD51C
RAD51C (RAD51 paralog C, FANCO, BROVCA3) is a human DNA repair gene encoding a 376-amino-acid RAD51 paralog essential for homologous recombination via BCDX2 and CX3 complexes; pathogenic variants raise ovarian and breast cancer risk.
RAD52
RAD52 (RAD52 DNA repair protein, gene at 12p13.33) is a human single-stranded DNA-binding protein mediating single-strand annealing and backup double-strand-break repair; its inhibition is synthetically lethal in BRCA1/2-deficient cancer, driving inhibitor development.
Rad9
Rad9: conserved DNA damage checkpoint protein. Budding yeast Rad9 is a 150 kDa adaptor (Tudor and BRCT domains); in fission yeast and humans, RAD9A forms the 9-1-1 clamp with Rad1 and Hus1, loaded by RAD17-RFC to activate ATR-Chk1 signaling.
Rad9, Rad1, Hus1-interacting nuclear orphan protein 1
RHNO1, also called RHINO or C12orf32, is a human nuclear checkpoint protein that binds the 9-1-1 clamp and TopBP1 to sustain ATR-Chk1 signaling, supports Pol θ-mediated mitotic DNA repair, and is overexpressed in cancer.
Rad9/Ddc1
Rad9/Ddc1 (IPR007268): conserved DNA damage checkpoint clamp subunits, Rad9 in the human 9-1-1 (Rad9-Hus1-Rad1) complex and Ddc1 in yeast Ddc1-Mec3-Rad17; PCNA-like rings that activate ATR-Chk1 via TopBP1 and link to cancer.