All articles starting with H

H1-10

H1-10 (H1FX, H1X, histone H1x) is a human gene on chromosome 3q21.3 encoding histone H1.10, a replication-independent somatic linker histone of 213 amino acids that binds active chromatin, nucleoli, and mitotic chromosomes.

H1-2

H1-2 (formerly HIST1H1C, HGNC:4716) is the human gene encoding H1.2, a 213-amino-acid replication-dependent linker histone on chromosome 6 that reads H3K27me3, compacts chromatin, silences growth-suppressive genes, and mediates DNA damage-induced apoptosis.

H1-4

H1-4 (HIST1H1E) is the human gene encoding histone H1.4, a replication-dependent linker histone on chromosome 6 that compacts chromatin, carries distinctive PTMs (K26me, S27p, S35p, K34ac), and whose frameshift mutations cause Rahman syndrome.

H1-5

H1-5 is the human gene encoding histone H1.5, one of eleven mammalian linker histone variants, located in the major histone cluster on chromosome 6 and implicated in chromatin condensation, gene regulation, and centromere integrity during mitosis.

H13 tool steel

H13 tool steel is a chromium hot-work tool steel, alloyed with chromium, molybdenum, and vanadium, and the most widely used grade for aluminum, magnesium, and zinc die-casting dies.

H1743-322

H1743-322, also cataloged as IGR J17464-3213, is a black hole X-ray binary and microquasar near the Galactic Center, discovered in 1977 and erupting in outbursts roughly every few years.

H19 (gene)

H19 is a human gene on chromosome 11 that produces a long noncoding RNA and is a classic example of genomic imprinting, with only the maternal copy typically active.

H2 Green Steel

H2 Green Steel, also known as H2GS AB and renamed Stegra in 2024, is a Swedish startup building a large-scale hydrogen-based steel plant in Boden, northern Sweden.

H2 Mobility

H2 Mobility is a German company founded in 2015 by six industrial firms including Air Liquide, Daimler, and Shell to build a nationwide hydrogen refuelling network.

Oct 22, 2026

H2@C60

H2@C60 is an endohedral fullerene in which a single hydrogen molecule sits inside the carbon cage of C60, first made by molecular surgery at Kyoto University in 2005.

H2/G

H2/G (H-2G) is the former name of the mouse H2g MHC haplotype and the HTG inbred strain, developed by Gorer about 1937 as an H2 recombinant; distinct from NOD's H2g7.

H2AX

H2AX (H2AFX, H2A.X) is a replication-independent histone H2A variant, 2.5–25% of mammalian H2A, whose ATM/ATR/DNA-PK phosphorylation on Ser139 (γH2AX) marks DNA double-strand breaks and supports repair, biodosimetry, and non-canonical chromatin roles.

H2O (disambiguation)

H2O most commonly denotes the chemical formula of water, and also names a US Department of Energy hydropower office, an Australian television series, and a machine learning platform.

H2o Surfshop

H2O Surfshop, a Portuguese surf, bodyboard, and skate gear shop founded in 2000 by Joca (Francisco Ferreira) in Marinha Grande, moved in 2021 to São Pedro de Moel beach, 17 km from Nazaré; distinct from Uruguayan and French namesakes.

H2O: Just Add Water

H2O: Just Add Water is an Australian children's fantasy drama (2006-2010, Network Ten, Jonathan M. Shiff) about Gold Coast teens Emma, Cleo, and Rikki, who become mermaids with water powers after visiting Mako Island's pool.

Oct 3, 2026

H₂O: Mermaid Adventures

H2O: Mermaid Adventures is a 2014 French-produced animated series, a Netflix Original with ZDF and France Télévisions, adapting H2O: Just Add Water; 26 episodes, premiered on Netflix May 22, 2015, canceled after two seasons.

Oct 26, 2026

H2O.ai

H2O.ai: Mountain View AI company founded 2012 by SriSatish Ambati; maker of H2O-3 open-source AutoML, Driverless AI, and h2oGPT; raised $251M, valued $1.7B in 2021.

Oct 22, 2026

H2O@C60

H2O@C60 is an endohedral fullerene in which a single water molecule is permanently sealed inside a C60 carbon cage, first synthesized in 2011 at Kyoto University.

H2oextreme

H2oextreme (H2O Extreme) names a kitesurfing and watersports centre founded 2003 at Galu Beach, Diani, Kenya, by Boris Polo; also a 2009 water-skiing film, a US hydrogen R&D firm, and a trademark.

H2S (radar)

H2S was a British airborne ground-mapping radar of the Second World War, developed by a team led by Bernard Lovell, that let RAF bombers navigate and bomb above cloud.

Oct 3, 2026

H3

H3 is the web-native comedy/talk brand of Ethan and Hila Klein: h3h3Productions (2011, 'Vape Nation') and the H3 Podcast (Dec 20, 2016), later the unified H3 Show (2024), with Frenemies and an October 2026 hiatus.

Sep 19, 2026

H3 (Kuwait)

H3 is a Neolithic coastal archaeological site at As-Sabiyah in Kuwait Bay, occupied in the sixth millennium BC and yielding the earliest evidence of mast and sail use.

H3 (rocket)

The H3, or H3 Launch Vehicle, is a two-stage expendable rocket developed by JAXA and Mitsubishi Heavy Industries as Japan's flagship launcher, replacing the H-IIA in 2023.

Oct 20, 2026

H3-4

H3-4 (H3.4, H3t, HIST3H3) is a human gene on chromosome 1q42.13 encoding histone H3.4, a mammalian, testis-enriched H3 variant essential for spermatogenesis, forming less stable nucleosomes than canonical H3.

H3B-6545

H3B-6545 is Eisai's oral selective estrogen receptor covalent antagonist (SERCA) that covalently binds C530 of ERalpha, inhibiting wild-type and mutant receptor in ER+/HER2- breast cancer; phase 1/2 testing showed 450 mg QD with ORR 20.2% and higher activity in ESR1 Y537S-mutant disease.