Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Robert C. Woodworth"'
Autor:
A. T. Tan, Robert C. Woodworth
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 30:599-606
The stabilities of conalbumin and transition metal-conalbumin complexes toward denaturants were studied by UV absorption and emission spectroscopy. The difference spectra of conalbumin and metal-conalbumins in buffer, pH 8.0 vs. the same species in b
Publikováno v:
Journal of Biological Chemistry. 276:8829-8835
Several bismuth compounds are currently used as antiulcer drugs, but their mechanism of action is not well established. Proteins are thought to be target sites. In this work we establish that the competitive binding of Bi(3+) to the blood serum prote
Autor:
Qing-Yu HE, Anne B. MASON, Barbara A. LYONS, Beatrice M. TAM, Vinh NGUYEN, Ross T.A. MACGILLIVRAY, Robert C. WOODWORTH
Publikováno v:
Biochemical Journal. 354:423-429
Human serum transferrin N-lobe (hTF/2N) contains three conserved tryptophan residues, Trp8, Trp128 and Trp264, located in three different environments. The present report addresses the different contributions of the three tryptophan residues to the U
Publikováno v:
Biochemical Journal. 350:909-915
The major function of human transferrin is to deliver iron from the bloodstream to actively dividing cells. Upon iron release, the protein changes its conformation from ‘closed’ to ‘open’. Extensive studies in vitro indicate that iron release
Publikováno v:
Biochemical Journal. 344:881-887
The N-lobe of human serum transferrin (hTF/2N) and single point mutants in which each of the five methionine residues was individually mutated have been produced in a mammalian tissue-culture expression system. Since the five methionine residues are
Publikováno v:
Biochemical Journal. 337:105-111
Interactions of recombinant N-lobe of human serum transferrin (hTF/2N) with Bi3+, a metal ion widely used in medicine, have been investigated by both UV and NMR spectroscopy. The bicarbonate-independent stability constant for Bi3+ binding (K*) to hTF
Autor:
Qing-Yu He, Robert C. Woodworth, N. Dennis Chasteen, Beatrice M. Tam, Ross T. A. MacGillivray, Anne B. Mason, John K. Grady
Publikováno v:
Journal of Biological Chemistry. 273:17018-17024
The x-ray crystal structure of the N-lobe of human serum transferrin has shown that there is a hydrogen bond network, the so-called “second shell,” around the transferrin iron binding site. Tyrosine at position 85 and glutamic acid at position 83
Autor:
Beatrice M. Tam, N. Dennis Chasteen, Anne B. Mason, Qing-Yu He, and John K. Grady, Ross T. A. MacGillivray, Robert C. Woodworth
Publikováno v:
Biochemistry. 36:14853-14860
Human serum transferrin N-lobe (hTF/2N) has four iron-binding ligands, including one histidine, one aspartate, and two tyrosines. The present report elucidates the inequivalence of the two tyrosine ligands (Tyr 95 and Tyr 188) on the metal-binding pr
Autor:
Anne B. Mason, John F. Brandts, Ross T. A. MacGillivray, Beatrice M. Tam, Janet A. Lineback, Robert C. Woodworth, Lung-Nan Lin, Brian N. Green, Ronald W. A. Oliver, Kerry J. Savage
Publikováno v:
Biochemical Journal. 326:77-85
The binding of iron by transferrin leads to a significant conformational change in each lobe of the protein. Numerous studies have shown that the transferrin receptor discriminates between iron-saturated and iron-free transferrin and that it modulate