Results 121 to 130 of about 3,563 (171)

Identification of β-aminoisobutyric acid in uremic serum

Clinica Chimica Acta, 1976
An unidentified ninhydrin-positive substance found in uremic sera but not found in normal sera was isolated by gel-filtration through Sephadex G-75 followed by high voltage paper electrophoresis (pH 3.5), and identified as beta-aminoisobutyric acid using paper chromatography and automated amino acid analyzer.
F, Gejyo, Y, Kinoshita, T, Ikenaka
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Transport of ?-aminoisobutyric acid in mammalian pancreatic �-cells

Diabetologia, 1971
Transport of α-aminoisobutyric acid (AIB) was studied in microdissected pancreatic islets of obesehyperglycaemic mice. These islets are characterized by an unusually high proportion of insulin-secretingβ-cells. The following main observations were made. 1. The islet cells exhibited a concentrative uptake of AIB, yielding distribution ratios much higher
B, Hellman, J, Sehlin, I B, Täljedal
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DL-3-Aminoisobutyric Acid Monohydrate

Acta Crystallographica Section C Crystal Structure Communications, 1998
The title acid, 3-amino-2-methylpropanoic acid monohydrate, C4H9NO2.H2O, crystallized in the centrosymmetric space group Pbca in the zwitterionic form. The three H atoms on N, which are involved in hydrogen bonding, are ordered. The three intermolecular N-H...O hydrogen bonds have N...O distances ranging from 2.758 (2) to 2.809 (2) A and N-H...O angles
A J, Dobson, R E, Gerkin
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Structures of N-acetyl-α-aminoisobutyric acid, C6H11NO3, and N-trifluoroacetyl-α-aminoisobutyric acid, C6H8F3NO3

Acta Crystallographica Section C Crystal Structure Communications, 1985
C6HI1NO 3 (Ac-Aib-OH; Ac, acetyl and Aib, a-aminoisobutyric acid): Mr= 145.16, monoclinic, P2~/n, a -- 10.165 (4), b = 8.030 (4), c = 9.712 (4)/~, fl-- 111.9 (3) °, V= 736 (2) A 3, Z-- 4, Dx= 1.31 g cm -3, 2(Mo Ka) = 0.71069 ,/k, /t = 0.98 cm -1, F(000) = 312, T--- 295 K.
G. Valle, C. Toniolo, G. M. Bonora
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Effects of hydrocortisone and adrenalectomy on uptake of α-aminoisobutyric acid

American Journal of Physiology-Legacy Content, 1961
Effects of adrenalectomy and hydrocortisone injection on distribution of α-aminoisobutyric acid (AIB) were measured in tissues of 16 groups of mice. Administration of hydrocortisone resulted in uniformly increased uptake of AIB by the liver and, less consistently, decreased uptake by lymphoid tissues and increased excretion by the kidneys. Experiments
S A, KAPLAN, C S, NAGAREDA
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Transport of 2-aminoisobutyric acid in cultured endothelial cells

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1994
Conflicting reports exist concerning the presence of a Na(+)-coupled amino acid transport system in cultured endothelial cells. We have employed a non-metabolizable analog, 2-aminoisobutyric acid (AIB), to investigate the activity of Na(+)-dependent amino acid transport in cultured human umbilical vein endothelial cells (HUVEC).
Y T, Lau, J K, Chen, B S, Chen, C C, Hsieh   +3 more
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Bradykinin analogs containing α-aminoisobutyric acid (Aib)

Peptides, 1980
All seven possible bradykinin (BK) analogs contained Aib in place of proline have been synthesized by the solid phase method and assayed for in vitro myotropic activity on the guinea pig ileum and rat uterus, and in vivo on the rat blood pressure, both in intravenous and intra-aortic administration. [Aib(2,3)]-BK, [Aib(2,7)]-BK, and [Aib(2,3,7)]-BK had
R J, Vavrek, J M, Stewart
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Phonon dispersion in poly(α-aminoisobutyric acid)

Polymer, 1995
The present work is a study of phonons and their dispersion in Poly (α-aminoisobutyric acid), which is an example of a polyamino acid having 3 10 helical conformation. It has been used as a model to carry out conformational studies on proteins and polypeptides.
Onkar Prasad, Poonam Tandon, V. D. Gupta, Shantanu Rastogi   +3 more
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The quantitation of β-aminoisobutyric acid in urine by mass fragmentography

Clinica Chimica Acta, 1973
Abstract A specific, rapid and sensitive method for the quantitation of β-aminoisobutyric acid in urine is described. The method is based on the analysis by quadrupole mass fragmentography of its N-TFA-O-n-butyl derivative using α-amino octanoic acid as an internal standard.
W E, Pereira, R E, Summons, W E, Reynolds, T C, Rindflelsch, A M, Duffield   +4 more
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Occurrence of β-Aminoisobutyric Acid in Mytilus edulis

Science, 1959
β-Aminoisobutyric acid was isolated from organ extracts of Mytilus edulis. Ion-exchange resins and large-scale paper chromatography were used to isolate minute quantities of the compound. β-Aminoisobutyric acid was identified by paper chromatography in several solvents and by conversion to DNP-β-aminoisobutyric acid
J, AWAPARA, K, ALLEN
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