Canbin Liang

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An examination of x-ray structures of single-cluster [4Fe-4S] proteins in the Protein Data Bank has revealed that all redox proteins and the glutamine 5-phosphoribosyl-l-pyrophosphate amidotransferase from Bacillus subtilis have a topological configuration arbitrarily designated as D, whereas the DNA repair enzyme endonuclease III from Escherichia coli has(More)
Raman spectra of normal hair shafts and hair shafts from patients exhibiting trichothiodystrophy (TTD) were obtained using line focus laser illumination. Because hair from TTD patients has a significant decrease in the content of the sulfur-containing amino acids in comparison to normal hair, the 550-500 cm(-1) disulfide stretching mode region of the Raman(More)
Time-like and null hypersurfaces in the degenerate space-times in Ashtekar theory are defined in the light of the degenerate causal structure proposed by Matschull. Using the new definition of null hypersurfaces, the conjecture that the “phase boundary” separating the degenerate space-time region from the nondegenerate one in Ashtekar’s gravity is always(More)
The structure of the phase boundary between degenerate and nondegenerate regions in Ashtekar’s gravity has been recently studied by Bengtsson and Jacobson who conjectured that the phase boundary should be always null. In this paper, we reformulate the reparametrization procedure in the mapping language and distinguish a phase boundary ∂M1 from its image(More)
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