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Thialf (crane vessel)
Thialf is a semi-submersible crane vessel of the Netherlands' Heerema Marine Contractors, built in 1985, whose 14,200-metric ton tandem lift set a world record in 2000.
Thiamethoxam
Thiamethoxam is a systemic, broad-spectrum neonicotinoid insecticide developed by Novartis Crop Protection and introduced by Syngenta in 1998, used as a seed treatment and foliar spray against sucking pests.
Thiamin/thiamin pyrophosphate ABC transporter, substrate-binding protein, Proteobacteria
Thiamin/thiamin pyrophosphate ABC transporter substrate-binding protein (IPR005967; ThiB/TbpA) is a Proteobacteria periplasmic protein that binds thiamin, TMP, and TPP at nanomolar affinity and delivers them to the ThiBPQ ABC importer.
Thiamine
Thiamine (thiamin, vitamin B1) is a water-soluble B vitamin and TDP cofactor in energy metabolism; deficiency causes beriberi and Wernicke-Korsakoff syndrome. Isolated 1926, synthesized 1936; RDA 1.1–1.2 mg/day.
Thiamine ABC transporter, ATP-binding protein ThiQ
ThiQ is the ATP-binding ATPase subunit of the ThiBPQ (tbpA-thiPQ) ABC transporter importing thiamine, TMP, and TPP in Proteobacteria such as E. coli and Salmonella; EC 7.6.2.15, with partners ThiB and ThiP.
Thiamine ABC transporter, permease protein
Thiamine ABC transporter permease protein (ThiP) is the membrane channel subunit of the bacterial ThiBPQ ABC importer that, with ThiB and ThiQ, actively transports thiamine, TMP, and TPP into Proteobacteria.
Thiamine deficiency
Thiamine deficiency (vitamin B1 deficiency) causes beriberi and Wernicke-Korsakoff syndrome; historically linked to polished-rice diets, it remains a public health problem in low-income countries and among people with alcoholism.
Thiamine diphosphate biosynthesis
Thiamine diphosphate (ThDP) biosynthesis is the enzymatic pathway by which bacteria, fungi, and plants build the active coenzyme form of vitamin B1, assembling thiazole and pyrimidine rings separately.
Thiamine pyrophosphate
Thiamine pyrophosphate (TPP), also called thiamin diphosphate or cocarboxylase, is the active coenzyme form of vitamin B1 that about 80% of the body's thiamin takes.
Thiamine pyrophosphokinase
Thiamine pyrophosphokinase (TPK, EC 2.7.6.2; human gene TPK1) is a cytosolic homodimeric enzyme that pyrophosphorylates thiamine to TPP using ATP. TPK1 variants cause autosomal recessive TPK1 deficiency (thiamine metabolism dysfunction syndrome 5), a treatable episodic encephalopathy.
Thiamine-phosphate synthase ThiN-like
ThiN-like thiamine-phosphate synthase (EC 2.5.1.3, IPR019293) is an archaeal and bacterial analog of ThiE, condensing HMP-PP and HET-P into thiamine monophosphate; usually fused to ThiD, absent in eukaryotes.
Thiamine-responsive megaloblastic anemia syndrome
Thiamine-responsive megaloblastic anemia syndrome (TRMA, Rogers syndrome): rare autosomal recessive SLC19A2 disorder causing megaloblastic anemia, diabetes, and sensorineural deafness, treatable with high-dose thiamine.
Thiamine/thiamin pyrophosphate-binding periplasmic protein, ABC transporter
ThiB (TbpA) is the periplasmic thiamine-binding protein of the bacterial ABC importer ThiBPQ (ThiB, ThiP, ThiQ), which transports thiamine, TMP, and TPP in E. coli and Salmonella; TbpA binds all three at low-nanomolar affinity.
Thiamphenicol
Thiamphenicol is a synthetic antibiotic of the amphenicol family, a methylsulfonyl analog of chloramphenicol first synthesized in 1952, which inhibits bacterial protein synthesis and is used in human and veterinary medicine.
Thianthrenation
Thianthrenation is a chemical reaction, introduced by Tobias Ritter's group in 2019, that converts aromatic C–H bonds into aryl thianthrenium salts with unusually high para selectivity without a directing group.
Thiaridae
Thiaridae, thiarids or melanians, a family of tropical freshwater snails (Cerithioidea) with brood pouches and parthenogenetic reproduction; includes the invasive Melanoides tuberculata, used against schistosomiasis yet a trematode host.
Thiazafluron
Thiazafluron (CAS 25366-23-8, Erbotan, GS 29696) is a trifluoromethyl-thiadiazole substituted-urea herbicide, formerly used for total weed control at 2–16 kg/ha, now not approved in the EU and banned in Türkiye.
Thiazide
Thiazide diuretics (hydrochlorothiazide, chlorthalidone, indapamide) block the sodium-chloride cotransporter in the distal convoluted tubule; first-line hypertension drugs since chlorothiazide's 1958 launch, also used for kidney stones and edema.
Thiazole
Thiazole, or 1,3-thiazole, is an aromatic five-membered heterocyclic compound with the formula C3H3NS, first reported in 1887, serving as a core motif in drugs like cefotaxime and vitamin B1.
Thiazole biosynthesis ThiH
ThiH (EC 4.1.99.19, 2-iminoacetate synthase) is the E. coli radical SAM tyrosine lyase that cleaves tyrosine to dehydroglycine and p-cresol, supplying the thiazole precursor of thiamin biosynthesis in a ThiG-ThiH complex.
Thiazolidine
Thiazolidine, also known as 1,3-thiazolidine or tetrahydrothiazole, is a saturated five-membered heterocycle with formula C₃H₇NS; its derivatives, notably thiazolidinones and thiazolidinediones, are important medicinal-chemistry scaffolds.
Thiazolidinedione
Thiazolidines (TZDs), also known as glitazones, are a class of oral drugs for type 2 diabetes that lower blood glucose by increasing insulin sensitivity via PPARγ and PPARα.
Thiazopyr
Thiazopyr is a pyridine-family preemergence herbicide sold under the trade names MANDATE and VISOR, first registered in the United States in 1997 to control annual grasses and certain broadleaf weeds in citrus.
Thibaris
Thibaris was an ancient town of the Roman province of Africa Proconsularis in northern Tunisia, identified with ruins at Henshir Hamamet near Djebba, and a bishopric of Carthage now a Catholic titular see.
Thibault Anselmet
Thibault Anselmet (born 1997, Chambéry) is a French ski mountaineer and army sergeant; first Olympic mixed relay champion and sprint bronze medalist at Milan-Cortina 2026, with three overall World Cup titles (2023-2025).
Thibault Damour
Thibault Damour, born 1951 in Lyon, is a French theoretical physicist who co-invented the effective one-body formalism for predicting gravitational waves from coalescing black holes, winning the CNRS Gold Medal in 2017.
Thibaut Courtois
Thibaut Courtois, Belgian goalkeeper born 1992 in Bree, plays for Real Madrid and Belgium. Genk, Atlético loan, Chelsea, then Real Madrid 2018; two Champions Leagues, 2021/22 stand-out keeper, The Best FIFA Goalkeeper 2022 runner-up.
Thibaut Vallette
Thibaut Vallette (born 1974, Brest) is a French eventing rider and army lieutenant colonel, Olympic team gold medalist at Rio 2016 riding Qing du Briot, and chief écuyer of the Cadre Noir since 2021.
Thibaw Min
Thibaw Min (သီပေါမင်း) was the last king of the Konbaung dynasty and last monarch of Burma, reigning 1878 to 1885 before British exile to India.
Thibe Deseyn
Thibe Deseyn, born 2003 in Sierre, is a Swiss ski mountaineer. She won gold and silver at the 2020 Winter Youth Olympics, world championship golds in 2023 and 2025, and her first ISMF World Cup podium in December 2025.