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Query: UNIPROT:P06889 (Mol)
 630,302 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Systematic series of monoamines, diamines, and triamines were used to define the structural requirements for interaction at the polyamine recognition site of the N-methyl-D-aspartate receptor complex. Effects of amines on binding of [3H]MK-801 to washed synaptic plasma membranes were measured in the presence of L-glutamate and glycine (100 microM each), in the absence or presence of spermine (10 microM). Linear aliphatic monoamines of methylene chain length up to 12 (dodecylamine) did not interact with the polyamine recognition site. Nonspecific inhibition of binding was observed at high concentrations of the longer monoamines. alpha,omega-Diamines of methylene chain length 2 (1,2-diaminoethane, DA2) through 12 (1,12-diaminododecane, DA12) had varying actions, depending on chain length. The shortest diamines (DA2 and DA3) acted as weak partial agonists, enhancing the binding of [3H[MK-801. Intermediate-length diamines (DA4-DA7) were selective polyamine antagonists, having little or no effect on binding of [3H]MK-801 measured in the absence of spermine but inhibiting binding measured in the presence of spermine. The longest diamines tested (DA8-DA12) acted as inverse agonists; they inhibited binding in the absence or presence of spermine, and this inhibition was blocked by the selective polyamine antagonist diethylenetriamine. Computer modeling of conformations of the diamines quantitatively documented that 1) these molecules are flexible and 2) long diamines may easily adopt conformations with inter-nitrogen distances mimicking those of short diamines. The cis and trans isomers of 1,4-diaminocyclohexane are inflexible, conformationally restricted diamines with markedly different actions. The cis isomer was a partial agonist and the trans isomer was an antagonist at the polyamine recognition site. Triamines of general structure NH2(CH2)3NH(CH2)xNH2 (TRI[3,x]), in which x = 3-12, were synthesized and tested for activity at the polyamine recognition site. Despite the large range of size, TRI[3,3] through TRI[3,9] were all fully polyamine agonists of similar potency. TRI[3,10] was a partial agonist, whereas TRI[3,12] inhibited binding of [3H]MK-801. Diethylenetriamine did not attenuate the effect of TRI[3,12]. Based on the results of the radioligand binding studies and the computer analysis, a model of the polyamine recognition site is proposed.
Mol Pharmacol 1992 Apr
PMID:Effects of mono-, di-, and triamines on the N-methyl-D-aspartate receptor complex: a model of the polyamine recognition site. 153 70

Absolute line intensities of (12)C(16)O(2) are experimentally measured for the first time for the (00(0)3)(I) <-- (10(0)0)(II) band at 5687.17 cm(-1) and the (00(0)3)(I) <-- (10(0)0)(I) band at 5584.39 cm(-1). The spectra were obtained using a Bomem DA8 Fourier transform spectrometer and a 25-m base-path White cell at NASA-Ames Research Center. The rotationless bandstrengths at a temperature of 296 K and the Herman-Wallis parameters are S(0)(vib) = 6.68(30) x 10(-25) cm(-1)/(molecule/cm(2)); A(1) = 1.4(9) x 10(-4), and A(2) = -1.1(5) x 10(-5) for the (00(0)3)(I) <-- (10(0)0)(II) band and S(0)(vib) = 6.07(22) x 10(-25) cm(-1)/(molecule/cm(2)); A(1) = 5.2(1.5) x 10(-4) and A(2) = -4.0(7) x 10(-5) for the (00(0)3)(I) <-- (10(0)0)(I) band.
J Mol Spectrosc 2000 Feb
PMID:Rovibrational Intensities of the (00(0)3) <-- (10(0)0) Dyad Absorption Bands of (12)C(16)O(2). 1063 8

For the first time, the emission spectrum of A(3)Pi(0)-X(1)Sigma(+) band system of InCl molecule has been recorded on BOMEM DA8 Fourier transform spectrometer at an apodized resolution of 0.025 cm(-1). The rotational structure of 1-0, 2-1, 0-0, 0-1, 1-2, 0-2, and 1-3 bands belonging to the A(3)Pi(0)-X(1)Sigma(+) transition of In(35)Cl has been analyzed and accurate equilibrium rotational constants of the A(3)Pi(0) state obtained. It has also been possible to unambiguously assign rotational lines of 1-0, 0-0, and 0-1 bands belonging to In(37)Cl isotopomer. No perturbations have been observed contrary to what has been reported by some of the earlier workers. Copyright 2001 Academic Press.
J Mol Spectrosc 2001 Jul
PMID:The Fourier Transform Emission Spectrum of the A(3)Pi(0)-X(1)Sigma(+) Band System of InCl. 1143 53