Crystallographic analysis of human serum albumin complexed with 4Z,15E-bilirubin-IXalpha.
Crystallographic analysis of human serum albumin complexed with 4Z,15E-bilirubin-IXalpha.
复制标题
DOI:
10.1016/j.jmb.2008.06.016
复制
发表时间:
2008-08-29
影响因子:
5.6
通讯作者:
Curry, Stephen
中科院分区:
文献类型:
--
作者:
Zunszain, Patricia A.;Ghuman, Jamie;McDonagh, Antony F.;Curry, Stephen
Bilirubin, an insoluble yellow-orange pigment derived from heme catabolism, accumulates to toxic levels in individuals with impaired or immature liver function. The resulting jaundice may be managed with phototherapy to isomerize the biosynthetic 4Z,15Z-bilirubin-IXα to more soluble and excretable isomers, such as 4Z,15E-bilirubin. Bilirubin and its configurational isomers are transported to the liver by human serum albumin (HSA) but their precise binding location(s) on the protein have yet to be determined. To investigate the molecular details of their interaction, we co-crystallised bilirubin with HSA. Strikingly, the crystal structure—determined to 2.42 Å resolution—revealed the 4Z,15E-bilirubin-IXα isomer bound to an L-shaped pocket in sub-domain IB. We also determined the co-crystal structure of HSA complexed with fusidic acid, an antibiotic that competitively displaces bilirubin from the protein, and showed that it binds to the same pocket. These results provide the first crystal structure of a natural bilirubin pigment bound to serum albumin, challenge some of the present conceptions about HSA–bilirubin interactions, and provide a sound structural framework for finally resolving the long-standing question of where 4Z,15Z-bilirubin-IXα binds to the protein.
登录
查看更多内容
DOI:
10.1111/j.1651-2227.1985.tb10051.x
发表时间:
1985-01-01
期刊:
ACTA PAEDIATRICA SCANDINAVICA
影响因子:
--
作者:
BRODERSEN, R
通讯作者:
BRODERSEN, R
影响因子:
4.8
作者:
Bhattacharya, AA;Curry, S;Franks, NP
通讯作者:
Franks, NP
DOI:
10.1111/j.1432-1033.1974.tb03295.x
发表时间:
1974-01-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
BEAVEN, GH;CHEN, SH;GRATZER, WB
通讯作者:
GRATZER, WB
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL
DOI:
10.1016/j.bbrc.2005.06.127
发表时间:
2005-08-26
影响因子:
3.1
作者:
Ascenzi, P;Bocedi, A;Fasano, M
通讯作者:
Fasano, M