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beta-Amylase
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D001614 |
[An enzyme that catalyzes the hydrolysis of 1,4-alpha-glycosidic linkages in starch, glycogen, and related polysaccharides and oligosaccharides so as to remove successive beta-maltose units from the non-reducing ends of the chains. EC 3.2.1.2.
] |
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beta-Arrestin 1
|
D000071559 |
[A beta-arrestin that functions in the down-regulation of signaling by G-PROTEIN-COUPLED RECEPTORS. It is also a major regulator of INSULIN signaling via the ERK 1-2 PATHWAY, and many other signaling processes, especially in NEURONS and LEUKOCYTES.
] |
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beta-Arrestin 2
|
D000071560 |
[A beta-arrestin that functions similarly to BETA-ARRESTIN 1 in regulating signaling by G-PROTEIN-COUPLED RECEPTORS. It is expressed at high levels in the central nervous system where it may regulate signaling by SYNAPTIC RECEPTORS.
] |
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beta-Arrestins
|
D000071557 |
[Non-visual system arrestins that negatively regulate G-PROTEIN-COUPLED RECEPTORS (GPCRs) and may also function independently of GPCR signaling. They bind and recruit many different signaling factors, including MITOGEN-ACTIVATED PROTEIN KINASES; SRC-FAMILY-KINASES; and FILAMIN to GPCRs and may recognize different phosphorylation states of the receptors to determine the specificity of the cellular response to signaling.
] |
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beta-Carotene 15,15'-Monooxygenase
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D050559 |
[A monooxygenase that catalyzes the conversion of BETA-CAROTENE into two molecules of RETINAL. It was formerly characterized as EC 1.13.11.21 and EC 1.18.3.1.
] |
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beta-Crystallin A Chain
|
D038205 |
[The acidic subunit of beta-crystallins.
] |
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beta-Crystallin B Chain
|
D038206 |
[The basic subunit of beta-crystallins.
] |
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beta-Crystallins
|
D038204 |
[A class of crystallins that provides refractive power and translucency to the lens (LENS, CRYSTALLINE) in VERTEBRATES. Beta-crystallins are similar in structure to GAMMA-CRYSTALLINS in that they both contain Greek key motifs. Beta-crystallins exist as oligomers formed from acidic (BETA-CRYSTALLIN A CHAIN) and basic (BETA-CRYSTALLIN B CHAIN) subunits.
] |
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beta-Cyclodextrins
|
D047392 |
[Cyclic GLUCANS consisting of seven (7) glucopyranose units linked by 1,4-glycosidic bonds.
] |
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beta-Defensins
|
D023083 |
[DEFENSINS found mainly in epithelial cells.
] |
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beta-Endorphin
|
D001615 |
[A 31-amino acid peptide that is the C-terminal fragment of BETA-LIPOTROPIN. It acts on OPIOID RECEPTORS and is an analgesic. Its first four amino acids at the N-terminal are identical to the tetrapeptide sequence of METHIONINE ENKEPHALIN and LEUCINE ENKEPHALIN.
] |
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beta-Fructofuranosidase
|
D043324 |
[A glycoside hydrolase found primarily in PLANTS and YEASTS. It has specificity for beta-D-fructofuranosides such as SUCROSE.
] |
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beta-Galactosidase
|
D001616 |
[A group of enzymes that catalyzes the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-galactosides. Deficiency of beta-Galactosidase A1 may cause GANGLIOSIDOSIS, GM1.
] |
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beta-Globins
|
D055544 |
[Members of the beta-globin family. In humans, they are encoded in a gene cluster on CHROMOSOME 11. They include epsilon-globin, gamma-globin, delta-globin and beta-globin. There is also a pseudogene of beta (theta-beta) in the gene cluster. Adult HEMOGLOBIN is comprised of two ALPHA-GLOBIN chains and two beta-globin chains.
] |
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beta-Glucans
|
D047071 |
[Glucose polymers consisting of a backbone of beta(1->3)-linked beta-D-glucopyranosyl units with beta(1->6) linked side chains of various lengths. They are a major component of the CELL WALL of organisms and of soluble DIETARY FIBER.
] |
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beta-Glucosidase
|
D001617 |
[An exocellulase with specificity for a variety of beta-D-glycoside substrates. It catalyzes the hydrolysis of terminal non-reducing residues in beta-D-glucosides with release of GLUCOSE.
] |
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beta-Hexosaminidase alpha Chain
|
D054820 |
[The alpha subunit of hexosaminidase A. Mutations in the gene that encodes this protein can result in loss of hexosaminidase A activity and are linked to TAY-SACHS DISEASE.
] |
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beta-Hexosaminidase beta Chain
|
D054821 |
[The beta subunit of hexosaminidase A and hexosamininidase B. Mutations in the gene that encodes this protein are linked to SANDHOFF DISEASE and can result in loss of both hexosaminidase A activity and hexosaminidase B activity.
] |
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beta-Keratins
|
D053800 |
[Keratins that form into a beta-pleated sheet structure. They are principle constituents of the corneous material of the carapace and plastron of turtles, the epidermis of snakes and the feathers of birds.
] |
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beta-Lactam Resistance
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D018440 |
[Nonsusceptibility of bacteria to the action of the beta-lactam antibiotics. Mechanisms responsible for beta-lactam resistance may be degradation of antibiotics by BETA-LACTAMASES, failure of antibiotics to penetrate, or low-affinity binding of antibiotics to targets.
] |
