TY - JOUR
T1 - Comparative phenotypic analyses of human plasma and urinary retinol binding protein using mass spectrometric immunoassay
AU - Kiernan, Urban A.
AU - Tubbs, Kemmons A.
AU - Nedelkov, Dobrin
AU - Niederkofler, Eric E.
AU - Nelson, Randall W.
PY - 2002
Y1 - 2002
N2 - Mass spectrometric immunoassay (MSIA) is a proteomics technology that combines the selectivity of affinity capture with the sensitivity and resolution of mass spectrometric detection. This unique approach allows for intact protein identification therefore is readily capable of discriminating between protein variants, i.e., mutations, posttranslational modifications, and truncations. In this work, MSIA is used in the comparative analyses of retinol binding protein (RBP) from the plasma and urine of a small study population. Detailed RBP profiles were obtained from both biological fluids, resulting in the identification of several catabolic RBP products (present in urine) that have not been previously reported. In addition, comparative analysis of urine samples taken from healthy and renally impaired individuals revealed different breakdown profiles. These results illustrate the use of MSIA for the rapid, sensitive, and accurate profiling of RBP both within and between individuals.
AB - Mass spectrometric immunoassay (MSIA) is a proteomics technology that combines the selectivity of affinity capture with the sensitivity and resolution of mass spectrometric detection. This unique approach allows for intact protein identification therefore is readily capable of discriminating between protein variants, i.e., mutations, posttranslational modifications, and truncations. In this work, MSIA is used in the comparative analyses of retinol binding protein (RBP) from the plasma and urine of a small study population. Detailed RBP profiles were obtained from both biological fluids, resulting in the identification of several catabolic RBP products (present in urine) that have not been previously reported. In addition, comparative analysis of urine samples taken from healthy and renally impaired individuals revealed different breakdown profiles. These results illustrate the use of MSIA for the rapid, sensitive, and accurate profiling of RBP both within and between individuals.
KW - Humans
KW - MALDI-TOF MS
KW - Posttranslational modifications
KW - Retinol binding protein
KW - Urine protein
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U2 - 10.1016/S0006-291X(02)02212-X
DO - 10.1016/S0006-291X(02)02212-X
M3 - Article
C2 - 12237133
AN - SCOPUS:0036398996
SN - 0006-291X
VL - 297
SP - 401
EP - 405
JO - Biochemical and Biophysical Research Communications
JF - Biochemical and Biophysical Research Communications
IS - 2
ER -