The structural basis for recognition of base J containing DNA by a novel DNA binding domain in JBP1.
The structural basis for recognition of base J containing DNA by a novel DNA binding domain in JBP1.
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DOI:
10.1093/nar/gkr125
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发表时间:
2011-07
影响因子:
14.9
通讯作者:
Perrakis A
中科院分区:
文献类型:
--
作者:
Heidebrecht T;Christodoulou E;Chalmers MJ;Jan S;Ter Riet B;Grover RK;Joosten RP;Littler D;van Luenen H;Griffin PR;Wentworth P Jr;Borst P;Perrakis A
The J-binding protein 1 (JBP1) is essential for biosynthesis and maintenance of DNA base-J (β-d-glucosyl-hydroxymethyluracil). Base-J and JBP1 are confined to some pathogenic protozoa and are absent from higher eukaryotes, prokaryotes and viruses. We show that JBP1 recognizes J-containing DNA (J-DNA) through a 160-residue domain, DB-JBP1, with 10 000-fold preference over normal DNA. The crystal structure of DB-JBP1 revealed a helix-turn-helix variant fold, a ‘helical bouquet’ with a ‘ribbon’ helix encompassing the amino acids responsible for DNA binding. Mutation of a single residue (Asp525) in the ribbon helix abrogates specificity toward J-DNA. The same mutation renders JBP1 unable to rescue the targeted deletion of endogenous JBP1 genes in Leishmania and changes its distribution in the nucleus. Based on mutational analysis and hydrogen/deuterium-exchange mass-spectrometry data, a model of JBP1 bound to J-DNA was constructed and validated by small-angle X-ray scattering data. Our results open new possibilities for targeted prevention of J-DNA recognition as a therapeutic intervention for parasitic diseases.
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DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
DOI:
10.1107/s0907444903018043
发表时间:
2003-11-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Grosse-Kunstleve, RW;Adams, PD
通讯作者:
Adams, PD
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
6.1
作者:
Konarev, PV;Volkov, VV;Svergun, DI
通讯作者:
Svergun, DI
影响因子:
14.9
作者:
Davis IW;Leaver-Fay A;Chen VB;Block JN;Kapral GJ;Wang X;Murray LW;Arendall WB 3rd;Snoeyink J;Richardson JS;Richardson DC
通讯作者:
Richardson DC