GAO Yuxi1 FENG Weiyue1 LI Bai1 ZHANG Peiqun1 HE Wei2 HUANG Yuying2 CHAI Zhifang1 1. Analysis of zinc in protein bands after electrophoresis separation by synchrotron radiation X-ray fluorescence[J]. Nuclear techniques, 2004, (3): 165-168.
GAO Yuxi1 FENG Weiyue1 LI Bai1 ZHANG Peiqun1 HE Wei2 HUANG Yuying2 CHAI Zhifang1 1. Analysis of zinc in protein bands after electrophoresis separation by synchrotron radiation X-ray fluorescence[J]. Nuclear techniques, 2004, (3): 165-168.DOI:
A procedure based on isoelectric focusing ( IEF ) separation and synchrotron radiation X-ray fluorescence ( SRXRF ) analysis for speciation of trace elements in biological samples was preliminarily established. The proteins in human liver cytosol were separated by IEF
and zinc amount in each protein band was measured by SRXRF. The results indicate that there were three main zinc-containing bands with isoelectric points ( pIs) of 4.69
5.93
and 9.84 present in the sample
and the zinc percentages in the three bands to the total recovered zinc were 33.08%
17.05%
and 26.54%
respectively. In addition
several zinc-containing proteins were present in the pI range of 6.6 ? 9.3