Characterization of precrystallization aggregation of canavalin by dynamic light scattering.

Published on Jan 1, 1990in Biophysical Journal3.67
· DOI :10.1016/S0006-3495(90)82513-3
Webe Kadima4
Estimated H-index: 4
(UCR: University of California, Riverside),
Alexander McPherson51
Estimated H-index: 51
(UCR: University of California, Riverside)
+ 1 AuthorsFrances Jurnak25
Estimated H-index: 25
(UCR: University of California, Riverside)
The aggregation processes leading to crystallization and precipitation of canavalin have been investigated by dynamic light scattering (DLS) in photon correlation spectroscopy (PCS) mode. The sizes of aggregates formed under various conditions of pH, salt concentration, and protein concentrations were deduced from the correlation functions generated by the fluctuating intensity of light scattered by the solutions of the protein. Results obtained indicate that the barrier to crystallization of canavalin is the formation of the trimer, a species that has been characterized by x-ray crystallographic studies (McPherson, A. 1980. J. Biol. Chem. 255:10472–10480). The dimensions of the trimer in solution are in good agreement with those obtained both from the crystal (McPherson, A. 1980. J. Biol. Chem. 255:10472–10480) and from a low angle x-ray scattering study in solution (Plietz, P., P. Damaschun, J. J. Muller, and B. Schlener. 1983. FEBS [Fed. Eur. Biochem. Soc.] Lett. 162:43–46). Furthermore, under conditions known to lead to the formation of rhombohedral crystals of canavalin, a limiting size is reached at high concentrations of canavalin. The size measured corresponds to an aggregate of trimers making a unit rhombohedral cell consistent with x-ray crystallographic data (McPherson, A. 1980. J. Biol. Chem. 255:10472–10480). Presumably, such aggregates are the nuclei from which crystal growth proceeds. The present study was undertaken primarily to test the potential of DLS (PCS) as a tool for rapid, routine screening to determine the ultimate fate of protein solutions (i.e., crystallization or amorphous precipitation) at an early stage, therefore eliminating the need for long-term visual observation.(ABSTRACT TRUNCATED AT 250 WORDS)
  • References (0)
  • Citations (70)
Cited By70
#1Yue Yu (JLU: Jilin University)H-Index: 2
#2Jianfeng GuoH-Index: 1
Last.Liying Wang (JLU: Jilin University)H-Index: 11
view all 6 authors...
1 CitationsSource
#1Mike Sleutel (Vrije Universiteit Brussel)H-Index: 12
#2Alexander E. S. Van Driessche (IFSTTAR)H-Index: 3
3 CitationsSource
#1Hilary P. Stevenson (University of Pittsburgh)H-Index: 9
#2Alexander M. Makhov (University of Pittsburgh)H-Index: 17
Last.Guillermo Calero (University of Pittsburgh)H-Index: 15
view all 16 authors...
35 CitationsSource
#1Giuseppe Vitiello (University of Naples Federico II)H-Index: 19
#2Gaetano Mangiapia (University of Naples Federico II)H-Index: 18
Last.Gerardino D'Errico (University of Naples Federico II)H-Index: 28
view all 8 authors...
6 CitationsSource
1 Citations
#1Richard Giegé (CNRS: Centre national de la recherche scientifique)H-Index: 54
66 CitationsSource
35 CitationsSource
#1Wang Wei (SWU: Southwest University)H-Index: 110
#2Chun Liu (SWU: Southwest University)H-Index: 1
Last.ChengZhi Huang (SWU: Southwest University)H-Index: 6
view all 4 authors...
4 CitationsSource