Results 161 to 170 of about 6,130 (209)

Some metabolic studies of β-aminoisobutyric acid

Life Sciences, 1967
Abstract DL-β-aminoisobutyric acid-β- 14 C was synthesized and administered intraperitoneally to rats. Radioactivity was incorporated into all vascular tissues. Maximum radioactivity was found in rat livers and kidneys within 30 minutes after injection. β-Aminoisobutyric acid-β- 14 C was readily converted to 14 CO 2 .
I K, Mushahwar, A, Alter, A R, Schulz
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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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Synthesis of [11C-methyl]-α-aminoisobutyric acid (AIB)

Nuclear Medicine and Biology, 1996
Alpha-aminoisobutyric acid (AIB) labeled with the cyclotron-produced, positron-emitting radionuclide 11C has been synthesized with the label in the alpha-methyl group. Our previously published synthesis of [11C] AIB in the carboxyl position from [11C] HCN requires a rigorous quality assurance program to ensure that the concentration of cyanide in the ...
B, Schmall, P S, Conti, M M, Alauddin
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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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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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The effect of endotoxin on plasma α-aminoisobutyric acid

Experientia, 1980
The i.v. injection of bacterial endotoxin into dogs was found to cause a rapid increase in plasma levels of infused alpha-aminoisobutyric acid. The findings suggest that nonmetabolic factors (tissue uptake, fluid shifts) influence amino acid distribution during endotoxemia.
R E, Kuttner, J J, Spitzer
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α-Aminoisobutyric acid uptake by cultured beating heart cells

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1972
Abstract 1. 1. The uptake of the amino acid analog, α-aminoisobutyric acid (AIB) by cultured beating rat heart cells has been investigated, taking advantage of a culture technique enabling to obtain 80–90 % myoblasts. 2. 2. AIB was found to be transported and accumulated within the myoblasts by a process requiring energy, K + and Na + , as ...
P, Dunand, B, Blondel, L, Girardier, B, Jeanrenaud   +3 more
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Structural studies of poly(α‐aminoisobutyric acid)

Biopolymers, 1986
AbstractThe electron‐diffraction pattern of an oriented film of poly(α‐aminoisobutyric acid) in the 310‐helical conformation has been analyzed. The conformation was obtained by a linked‐atom least‐squares refinement of average values from crystal structures.
B. R. Malcolm, M. D. Walkinshaw
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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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α-Aminoisobutyric acid uptake in isolated mouse fat cells

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1969
Abstract 1. 1. The uptake of the amino acid analogue, α-aminoisobutyric acid into mouse isolated fat cells has been studied. 2. 2. α-Aminoisobutyric acid was found to be transported into and accumulated within the cells by a process that was both temperature and energy-dependent. 3. 3.
M, Touabi, B, Jeanrenaud
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