URANIUM BIOACCUMULATION BY A CITROBACTER SP AS A RESULT OF ENZYMATICALLY MEDIATED GROWTH OF POLYCRYSTALLINE HUO2PO4

被引：228
作者：
MACASKIE, LE
EMPSON, RM
CHEETHAM, AK
GREY, CP
SKARNULIS, AJ
机构：
[1] ST MARYS HOSP,SCH MED,LONDON W2 1NY,ENGLAND
[2] UNIV OXFORD,CHEM CRYSTALLOG LAB,OXFORD OX1 3PD,ENGLAND
来源：
SCIENCE | 1992年 / 257卷 / 5071期
关键词：
D O I：
10.1126/science.1496397
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A Citrobacter sp. accumulates heavy deposits of metal phosphate, derived from an enzymatically liberated phosphate ligand. The cells are not subject to saturation constraints and can accumulate several times their own weight of precipitated metal. This high capacity is attributable to biomineralization; uranyl phosphate accumulates as polycrystalline HUO2PO4 at the cell surface. The precipitated metal is indistinguishable from crystalline HUO2PO4.4H2O grown by chemical methods.
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页码：782 / 784
页数：3
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