| 释义 |
prealbumin Biochem.|priːˈælbjʊmɪn, -ælˈbjuːmɪn|
[pre- B. 3; so called because it appears slightly in front of albumin during electrophoresis.]
A plasma protein with an electrophoretic mobility slightly greater than that of albumin; spec. a tetramer in human blood which binds thyroxine and the retinol-binding protein.
1955O. Smithies in Biochem. Jrnl. LXI. 634/2 The two components migrating more rapidly than the broad albumen zone are referred to as the pre-albumins1 and 2 (1 indicating the faster-moving component). 1959Nature 3 Oct. 1067/2 (heading) Separation of prealbumins by starch gel electrophoresis. 1975F. W. Putnam Plasma Proteins (ed. 2) I. ii. 72 Prealbumins have been described in other species such as the mouse; the molecular weight is only about 20,000 and the function is unknown. 1976Sci. Amer. Sept. 58/2 When dietary protein intake is deficient, the two proteins that play a role in the transport of vitamin A (retinol-binding protein and prealbumin) are not made by the liver in adequate amounts. |