All articles starting with P
28,818 articles
PDPN
PDPN (podoplanin), also called E11, gp38, T1α, or Aggrus, is a mucin-type transmembrane glycoprotein marking lymphatic endothelium, binding platelet CLEC-2, and promoting cancer invasion and metastasis.
PDS 70
PDS 70 is a young K7 T Tauri star about 370 light-years away in Centaurus whose transition disk hosts two directly imaged giant planets, PDS 70 b and c.
PDT Partners
PDT Partners, also known as PDT Advisors, is a secretive New York quantitative hedge fund led by founder Peter Muller, spun out of Morgan Stanley in 2012.
PDU
PDU, an Italian-Swiss record label and music publisher founded in 1967 by singer Mina and her father Giacomo Mazzini, remains the corporate home of Mina's recordings.
PDVSA
PDVSA, or Petróleos de Venezuela, S.A., is Venezuela's state-owned oil and gas company, created in 1975 and given control of the nationalized oil industry in 1976.
PDX (tokamak)
PDX (Poloidal Divertor Experiment) was a tokamak at the Princeton Plasma Physics Laboratory that tested poloidal divertors for impurity control, operated from 1978 to 1983, and was converted into PBX.
PDX1
PDX1 (IPF1, IDX-1, STF-1) is a homeodomain transcription factor, master regulator of pancreas development and beta-cell identity; homozygous mutation causes pancreatic agenesis, heterozygous mutation causes MODY4 diabetes.
PDZ domain
PDZ domain (PSD-95/Dlg/ZO-1), an 80-100 residue protein interaction module binding C-terminal motifs via a GLGF carboxylate-binding loop; scaffolds receptors and ion channels at synapses and junctions; about 270 copies in the human proteome.
PDZ domain-containing protein MAGIX
MAGIX (MAGI family member, X-linked; PDZX, JM10) is a human X-linked PDZ-domain scaffolding protein, UniProt Q9H6Y5, 334 aa, at Xp11.23, expressed tissue-enhanced in liver and a favorable prognostic marker in four cancers.
PDZ-binding protein, CRIPT
CRIPT (cysteine-rich interactor of PDZ three, gene CRIPT/HSPC139) is a 101-aa postsynaptic protein binding PSD-95 PDZ3 via C-terminal QTSV and microtubules, linking PSD-95 to the cytoskeleton; distinct from CRIPTO/TDGF1.
PdZn intermetallic catalysts
PdZn intermetallic catalysts are heterogeneous catalysts based on ordered palladium–zinc compounds, most prominently β-PdZn, whose copper-like electronic structure makes them candidates for methanol synthesis and steam reforming.
Pe (Semitic letter)
Pe is the seventeenth letter of the Semitic abjads, appearing as Phoenician 𐤐, Hebrew פ, Aramaic, Syriac, and Arabic fāʾ; named for "mouth", it yields Greek pi and Latin P, with p/f dagesh alternation.
Pe Premier Bx Secondaries
PE Premier BX Secondaries is a program of paired Delaware and Cayman Islands feeder limited partnerships for private equity secondaries, administered by iCapital Strategies LLC of New York since 2021.
Pea
Pea (Pisum sativum), a founder-crop legume domesticated about 10,000 years ago in the Near East with a second Ethiopian domestication (P. abyssinicum); grown as English shelling, snow, and sugar snap peas, a cool-season crop harvested in about 60 days.
Pea coat
Pea coat, also peacoat or pea jacket, a short double-breasted heavy-wool sailor's coat from Dutch pijjekker (pij, coarse cloth), attested in English from 1721, US Navy regs 1841/1886.
Pea crab
The pea crab (Pinnotheres pisum) is a small crab that lives inside the shells of mussels, oysters, and other bivalves in European and Mediterranean waters.
Pea fiber
Pea fiber: dietary fiber ingredient from pea hulls and pods (Pisum sativum), 71-92% fiber in hulls, mostly insoluble cellulose and hemicellulose; used in bread, meat, and yogurt; FDA GRAS as GRN 525 (2014).
Pea protein
Pea protein is a plant protein extracted from yellow field peas (Pisum sativum), sold as concentrates and isolates for food use; FDA GRAS-listed, PDCAAS about 0.81 to 0.93, low in methionine, low allergenicity, used in meat analogues and beverages.
Pea shoots
Pea shoots are the young, tender vine tips of garden peas (Pisum sativum), a Hmong-introduced specialty green eaten raw, steamed, or stir-fried; rich in vitamins C, E, A, and potassium, grown in cool 55–65°F weather, and used within one to two days of harvest.
Pea soup
Pea soup: thick soup of dried split peas, pork, and aromatics; Nordic ärtsoppa/hernekeitto eaten Thursdays from medieval fasting, Dutch snert (2019 intangible heritage), and French Canadian soupe aux pois.
Pea soup fog
Pea soup fog, or pea-souper, is a thick yellowish or blackish fog colored by coal soot and sulfur dioxide, typified by London's fogs and the Great Smog of December 1952; the name comes from split-pea soup.
Peab
Peab AB is a Swedish construction and civil engineering company founded in 1959 by Erik and Mats Paulsson, headquartered in Förslöv and one of the Nordic region's largest contractors.
Peabo Bryson
Peabo Bryson (Robert "Peabo" Bryson, 1951-2026), American R&B balladeer from Greenville, South Carolina, two-time Grammy winner famous for the Disney duets "Beauty and the Beast" with Celine Dion and "A Whole New World" with Regina Belle.
Peabody Awards
Peabody Awards (George Foster Peabody Awards): annual University of Georgia honors for excellence in television, streaming, radio, podcast, and interactive storytelling, first given 1941; about 30 winners chosen yearly by a unanimous-vote Board of Jurors.
Peabody Energy
Peabody Energy is a St. Louis-based coal company founded in Chicago in 1883, among the largest U.S. coal producers with mines in the United States and Australia.
Peabody Museum of Natural History
The Peabody Museum of Natural History is Yale University's natural history museum in New Haven, Connecticut, founded in 1866 with a George Peabody gift. It holds 14 million objects, displays the first Brontosaurus specimen and Zallinger's Age of Reptiles mural, and reopened free in March 2024 after a $160 million renovation.
Peace
Peace, in peace research, means more than the absence of war: negative peace is the absence of direct violence, while positive peace, per Johan Galtung, adds social justice and the absence of structural and cultural violence, underpinning UN peacebuilding and indices like the Global Peace Index.
Peace – Romania First
Peace – Romania First is a Romanian Senate parliamentary group, also known as PACE – Romania First Group. It was formed by renaming the S.O.S. România group in September 2025.
PEACE (submarine cable)
PEACE (Pakistan & East Africa Connecting Europe) is a privately owned submarine communications cable linking Singapore, Pakistan, Kenya, Egypt, and France, fully activated from Singapore to Marseille in 2024.
Peace and conflict studies
Peace and conflict studies (peace studies, peace research) is an interdisciplinary field studying violence, war, and peace. Founded in the 1950s–60s around Johan Galtung, PRIO, and the Journal of Peace Research; known for negative versus positive peace and structural violence.