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- U1 spliceosomal RNAU1 spliceosomal RNA is the small nuclear RNA (snRNA) component of U1 snRNP (small nuclear
- U2 spliceosomal RNAU2 spliceosomal snRNAs are a species of small nuclear RNA (snRNA) molecules found in the m
- U4 spliceosomal RNAThe U4 small nuclear Ribo-Nucleic Acid (U4 snRNA) is a non-coding RNA component of the maj
- UBA1Protein-coding gene in the species Homo sapiens
- UBE3AProtein found in humans
- UbiquitinRegulatory protein found in most eukaryotic tissues
- Ubiquitin A-52 residue ribosomal protein fusion product 160S ribosomal protein L40 (RPL40) is a protein that in humans is encoded by the UBA52 gene
- Ubiquitin BUbiquitin is a protein that in humans is encoded by the UBB gene.
- Ubiquitin CPolyubiquitin-C is a protein encoded by the UBC gene in humans. Polyubiquitin-C is one of
- Ubiquitin ligaseProtein
- Ubiquitin-activating enzymeUbiquitin-activating enzymes, also known as E1 enzymes, catalyze the first step in the ubi
- Ubiquitin-conjugating enzymeUbiquitin-conjugating enzymes, also known as E2 enzymes and more rarely as ubiquitin-carri
- UdderOrgan formed of mammary glands on the females of dairy animals
- UlnaMedial bone from forearm
- UltrabithoraxUltrabithorax (Ubx) is a homeobox gene found in insects, and is used in the regulation of
- UmamiOne of the five basic tastes
- Umbilical cordConduit between embryo/fetus and the placenta
- Umbrella speciesSpecies protected to aid further species
- Una M. RyanIrish biochemist
- Una RyanBritish-American biologist
- Underground stemPart of some vascular plants
- Unequal crossing overChromosomal crossover resulting in gene duplication or deletion
- Unicellular organismOrganism that consists of only one cell
- UniFracUniFrac, a shortened version of unique fraction metric, is a distance metric used for comp
- UnipedalismPerson or creature with one foot and one leg
- UniProtDatabase of protein sequences and functional information
- Unit of selectionBiological entity within the hierarchy of biological organization
- Universal DarwinismApplication of Darwinian theory to other fields
- Untranslated regionNon-coding regions on either end of mRNA
- Upward Sun River siteThe Upward Sun River site, or Xaasaa Na’, is a Late Pleistocene archaeological site associ
- UracilChemical compound of RNA
- Urban ecologyScientific study of living organisms
- Urea cycleSet of biochemical reactions
- Urea transporterA urea transporter is a membrane transport protein, transporting urea. Humans and other ma
- Ureaplasma parvumSpecies of bacterium
- Ureaplasma urealyticumSpecies of bacterium
- UreterTubes used in the urinary system in most animals
- UreteroscopyUreteroscopy is an examination of the upper urinary tract, usually performed with a ureter
- UrethraTube that connects the urinary bladder to the external urethral orifice
- Urethral glandThe urethral or periurethral glands (also Littré glands after Alexis Littré) are glands th
- Urethral sphinctersMuscles keeping urine in the bladder
- Uridine triphosphateChemical compound
- Urinary tract ultrasoundUltrasound of the urinary tract involves the use of an ultrasound probe to image parts of
- UrineLiquid by-product of animal metabolism
- Urogenital sinusPart of mammalian embryo
- Uropod (immunology)Uropods, in immunology, refer to the hind part of polarized cells during cell migration th
- Uterine contractionUterine contractions are muscle contractions of the uterine smooth muscle that can occur a
- Uterine microbiomeMicroorganisms in a healthy uterus
- Utricularia gibbaSpecies of plant, Humped bladderwort