XFEL Crystal Structures of Peroxidase Compound II
XFEL Crystal Structures of Peroxidase Compound II
复制标题
过氧化物酶化合物 II 的 XFEL 晶体结构
DOI:
10.1002/ange.202103010
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发表时间:
2021
影响因子:
--
通讯作者:
Kwon H
中科院分区:
文献类型:
--
作者:
Kwon H
Oxygen activation in all heme enzymes requires the formation of high oxidation states of iron, usually referred to as ferryl heme. There are two known intermediates: Compound I and Compound II. The nature of the ferryl heme—and whether it is an FeIV=O or FeIV‐OH species—is important for controlling reactivity across groups of heme enzymes. The most recent evidence for Compound I indicates that the ferryl heme is an unprotonated FeIV=O species. For Compound II, the nature of the ferryl heme is not unambiguously established. Here, we report 1.06 Å and 1.50 Å crystal structures for Compound II intermediates in cytochromecperoxidase (CcP) and ascorbate peroxidase (APX), collected using the X‐ray free electron laser at SACLA. The structures reveal differences between the two peroxidases. The iron‐oxygen bond length in CcP (1.76 Å) is notably shorter than in APX (1.87 Å). The results indicate that the ferryl species is finely tuned across Compound I and Compound II species in closely related peroxidase enzymes. We propose that this fine‐tuning is linked to the functional need for proton delivery to the heme.
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影响因子:
15
作者:
Wang X;Peter S;Kinne M;Hofrichter M;Groves JT
通讯作者:
Groves JT
影响因子:
4.6
作者:
Gordon, Zachary;Drummond, Michael J.;Fout, Alison R.
通讯作者:
Fout, Alison R.
影响因子:
15
作者:
Zaragoza JPT;Yosca TH;Siegler MA;Moënne-Loccoz P;Green MT;Goldberg DP
通讯作者:
Goldberg DP
DOI:
10.1098/rspb.1937.0015
发表时间:
1937-04-01
期刊:
PROCEEDINGS OF THE ROYAL SOCIETY SERIES B-BIOLOGICAL SCIENCES
影响因子:
--
作者:
Keilin, D;Mann, T
通讯作者:
Mann, T
DOI:
10.1016/j.jinorgbio.2006.01.008
发表时间:
2006
期刊:
Journal of inorganic biochemistry.
影响因子:
--
作者:
Terner,James;Palaniappan,Vaithianathan;Gold,Avram;Weiss,Raymond;Fitzgerald,MelissaM;Sullivan,AnnM;Hosten,CharlesM
通讯作者:
Hosten,CharlesM