Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Susceptibility of different proteins to flow-induced conformational changes monitored with Raman spectroscopy
AU - Ashton, Lorna
AU - Dusting, Jonathan
AU - Imomoh, Eboshogwe
AU - Balabani, Stavroula
AU - Blanch, Ewan W.
PY - 2010/2/17
Y1 - 2010/2/17
N2 - By directly monitoring stirred protein solutions with Raman spectroscopy, the reversible unfolding of proteins caused by fluid shear is examined for several natural proteins with varying structural properties and molecular weight. While complete denaturation is not observed. a wide range of spectral variances occur for the different proteins, indicating subtle conformational changes that appear to be protein-specific A number of significant overall trends are apparent from the study For globular proteins, the overall extent of spectral variance increases with protein size and the proportion of beta-structure For two less structured proteins, fetuin and a-casein. the observed changes are of relatively low magnitude, despite the greater molecular structural mobility of these proteins This implies that other protein-specific factors, such as posttranslational modifications, may also be significant Individual band changes occurring in the spectral profiles of each individual protein are also discussed in detail
AB - By directly monitoring stirred protein solutions with Raman spectroscopy, the reversible unfolding of proteins caused by fluid shear is examined for several natural proteins with varying structural properties and molecular weight. While complete denaturation is not observed. a wide range of spectral variances occur for the different proteins, indicating subtle conformational changes that appear to be protein-specific A number of significant overall trends are apparent from the study For globular proteins, the overall extent of spectral variance increases with protein size and the proportion of beta-structure For two less structured proteins, fetuin and a-casein. the observed changes are of relatively low magnitude, despite the greater molecular structural mobility of these proteins This implies that other protein-specific factors, such as posttranslational modifications, may also be significant Individual band changes occurring in the spectral profiles of each individual protein are also discussed in detail
KW - BETA-LACTOGLOBULIN
KW - STRUCTURAL-CHARACTERIZATION
KW - SECONDARY STRUCTURE
KW - FILAMENTOUS VIRUS
KW - CONCANAVALIN-A
KW - SHEAR-FLOW
KW - CASEIN
KW - PHOSPHORYLATION
KW - TRANSITION
KW - FETUIN
U2 - 10.1016/bpj.2009.10.010
DO - 10.1016/bpj.2009.10.010
M3 - Journal article
VL - 98
SP - 707
EP - 714
JO - Biophysical Journal
JF - Biophysical Journal
SN - 0006-3495
IS - 4
ER -