TY - JOUR
T1 - Molecular weights of high molecular weight subunits of glutenin determined by mass spectrometry
AU - Hickman, Dominic R.
AU - Roepstorff, Peter
AU - Shewry, Peter R.
AU - Tatham, Arthur S.
PY - 1995
Y1 - 1995
N2 - High molecular weight (HMW) subunits of glutenin, corresponding to those for which full length gene sequences are available, were purified and their Mrs determined by mass spectrometry [matrix-assisted laser desorption ionisation (MALDI)]. In general, the Mrs determined were within the experimental error of the techniques employed [at the mass range of the high molecular weight (hmw) prolamins, error ∼ 500 Da]. Two subunits, 1 Dx2 and 1By9, however, showed Mrs approximately 900 Da higher and 1700 Da lower, respectively, than expected from their gene sequences. These data confirm that the HMW subunits are not extensively glycosylated and also demonstrate the utility of mass spectrometry for determining the Mrs of prolamins.
AB - High molecular weight (HMW) subunits of glutenin, corresponding to those for which full length gene sequences are available, were purified and their Mrs determined by mass spectrometry [matrix-assisted laser desorption ionisation (MALDI)]. In general, the Mrs determined were within the experimental error of the techniques employed [at the mass range of the high molecular weight (hmw) prolamins, error ∼ 500 Da]. Two subunits, 1 Dx2 and 1By9, however, showed Mrs approximately 900 Da higher and 1700 Da lower, respectively, than expected from their gene sequences. These data confirm that the HMW subunits are not extensively glycosylated and also demonstrate the utility of mass spectrometry for determining the Mrs of prolamins.
KW - glutenin subunits
KW - mass spectrometry
KW - molecular weights
UR - http://www.scopus.com/inward/record.url?scp=0001589833&partnerID=8YFLogxK
U2 - 10.1016/0733-5210(95)90038-1
DO - 10.1016/0733-5210(95)90038-1
M3 - Article
AN - SCOPUS:0001589833
SN - 0733-5210
VL - 22
SP - 99
EP - 103
JO - Journal of Cereal Science
JF - Journal of Cereal Science
IS - 2
ER -