Cytosine hybrid dipeptides




Doi, M., Nakamoto, Y. & Asano, A.
Cytosine-containitg hybrid dipeptides: N-[2-(4-amino-2-oxo-1,2-dihydropyrimidin-1-yl) propionyl]-L-phenylalanine N-[2-(4-amino-2-oxo-1,2-dihydropyrimidin-1-yl)propionyl]-L-serine monohydrate and N-[2-(4-amino-2-oxo-1,2-dihydropyrimidin-1-yl)propionyl]-L-lysine.
Acta Crystallogr., C61, o577-o582 (2005).
@Jan. 2006
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See also. Asano et al., 2002: Interaction Modes between N7-Quarternized Guanine and Cytosine-Containing Dipeptides. Chem. Lett. 11, 1136-1137.

X-Ray Data Summary

compound C-Phe C-Ser C-Lys
formula 4(C16H18N4O4) 2(C10H14N4O5, H2O) 2(C13H21N5O4)
weight 1321.4 456.5 622.5
space group P1 P1 P1
Cell
a, Ang. 9.359(1) 4.863(1) 6.9334(9)
b, Ang. 10.345(1) 10.771(2) 8.298(1)
c, Ang. 16.925(2) 12.228(2) 13.249(2)
α, deg. 92.079(2) 80.45(3) 90.780(2)
β, deg. 95.775(2) 89.23(3) 93.498(2)
γ, deg. 95.245(2) 88.61(3) 107.293(2)
volume, Ang^3 1621.7(4) 631.4(2) 726.0(2)
Z 4 2 2
Crystal
Dx, g/ml 1.353 1.516 1.424
F(000) 696 304 332
μ, mm^-1 0.100 0.126 0.108
Radiation Mo Kα Mo Kα Mo Kα
Diffrn measurement
device type Bruker SMART APEX Bruker SMART APEX Bruker SMART APEX
T, K 100 100 100
No.of reflections (obs) 8913 3919 7954
Rint 0.0250 0.0221 0.0253
θmax (deg.) 25.68 25.68 26.36
No.of reflections (I>2σ(I)) 5788 2284 2714
Refinement
Flack -0.6(13) 0.6(14) -0.5(11)
parameters 896 377 399
restraints 180 3 3
Goodness of fit 1.130 1.167 1.000
Δ/σmax 0.011 0.007 <0.001
R1 0.0641 0.0479 0.0381
wR 0.1478 0.1131 0.0969
Δρmax, e A^-3 0.331 0.321 0.341
Δρmin, e A^-3 -0.313 -0.254 -0.194
PDB here here here
Position of amino acid in hybrid dipeptide



Molecular fittings drawn by iMol

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