Enzyme

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     1. Oxidoreductases
        1.10 Acting on diphenols and related substances as donors
            1.10.3 With oxygen as acceptor
ID:1.10.3.9
Description:Photosystem II.
Cath: 1.20.5.70; 1.20.5.700; 2.102.10.10;

3D structure

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References

External Links

UniProtKB Enzyme Link: UniProtKB 1.10.3.9
BRENDA Enzyme Link: BRENDA 1.10.3.9
KEGG Enzyme Link: KEGG1.10.3.9
BioCyc Enzyme Link: BioCyc 1.10.3.9
ExPASy Enzyme Link: ExPASy1.10.3.9
EC2PDB Enzyme Link: EC2PDB 1.10.3.9
ExplorEnz Enzyme Link: ExplorEnz 1.10.3.9
PRIAM enzyme-specific profiles Link: PRIAM 1.10.3.9
IntEnz Enzyme Link: IntEnz 1.10.3.9
MEDLINE Enzyme Link: MEDLINE 1.10.3.9
MSA:

1.10.3.9;

Phylogenetic Tree:

1.10.3.9;

Uniprot:
M-CSA:
RHEA:36359 2 a plastoquinone + 2 H2O + 4 hnu = 2 a plastoquinol + O2
RULE(radius=1) [*:1]-[C;H0;+0:2]1=[C;H0;+0:3](-[*:4])-[C;H0;+0:5](=[O;H0;+0:6])-[C;H0;+0:7](-[*:8])=[CH;+0:9]-[C;H0;+0:10]-1=[O;H0;+0:11].[*:12]-[C;H0;+0:13]1=[C;H0;+0:14](-[*:15])-[C;H0;+0:16](=[O;H0;+0:17])-[CH;+0:18]=[C;H0;+0:19](-[*:20])-[C;H0;+0:21]-1=[O;H0;+0:22].[OH2;+0:23].[OH2;+0:24]>>[*:12]-[c;H0;+0:13]1:[c;H0;+0:21](-[OH;+0:22]):[c;H0;+0:19](-[*:20]):[cH;+0:18]:[c;H0;+0:16](-[OH;+0:17]):[c;H0;+0:14]:1-[*:15].[*:1]-[c;H0;+0:2]1:[c;H0;+0:10](-[OH;+0:11]):[cH;+0:9]:[c;H0;+0:7](-[*:8]):[c;H0;+0:5](-[OH;+0:6]):[c;H0;+0:3]:1-[*:4].[O;H0;+0:23]=[O;H0;+0:24]
Reaction
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References

TitleAuthorsDatePubMed ID
Cyanobacterial photosystem II at 2.9-A resolution and the role of quinones, lipids, channels and chloride.Guskov A, Kern J, Gabdulkhakov A, Broser M, Zouni A, Saenger W2009 Mar19219048
Taking snapshots of photosynthetic water oxidation using femtosecond X-ray diffraction and spectroscopy.Kern J, Tran R, Alonso-Mori R, Koroidov S, Echols N, Hattne J, Ibrahim M, Gul S, Laksmono H, Sierra RG, Gildea RJ, Han G, Hellmich J, Lassalle-Kaiser B, Chatterjee R, Brewster AS, Stan CA, Glöckner C, Lampe A, DiFiore D, Milathianaki D, Fry AR, Seibert MM, Koglin JE, Gallo E, Uhlig J, Sokaras D, Weng TC, Zwart PH, Skinner DE, Bogan MJ, Messerschmidt M, Glatzel P, Williams GJ, Boutet S, Adams PD, Zouni A, Messinger J, Sauter NK, Bergmann U, Yano J, Yachandra VK2014 Jul 925006873
Structure of Sr-substituted photosystem II at 2.1 A resolution and its implications in the mechanism of water oxidation.Koua FH, Umena Y, Kawakami K, Shen JR2013 Mar 523426624
Crystal structure of oxygen-evolving photosystem II at a resolution of 1.9 Å.Umena Y, Kawakami K, Shen JR, Kamiya N2011 May 521499260
Crystal structure of monomeric photosystem II from Thermosynechococcus elongatus at 3.6-a resolution.Broser M, Gabdulkhakov A, Kern J, Guskov A, Müh F, Saenger W, Zouni A2010 Aug 2020558739
Location of chloride and its possible functions in oxygen-evolving photosystem II revealed by X-ray crystallography.Kawakami K, Umena Y, Kamiya N, Shen JR2009 May 2619433803
Crystal structure of oxygen-evolving photosystem II from Thermosynechococcus vulcanus at 3.7-A resolution.Kamiya N, Shen JR2003 Jan 712518057

RHEA:30247 2 H2O + 4 hnu + 2 plastoquinone-9 = O2 + 2 plastoquinol-9
RULE(radius=1) [*:1]-[C;H0;+0:2]1=[C;H0;+0:3](-[*:4])-[C;H0;+0:5](=[O;H0;+0:6])-[C;H0;+0:7](-[*:8])=[CH;+0:9]-[C;H0;+0:10]-1=[O;H0;+0:11].[*:12]-[C;H0;+0:13]1=[C;H0;+0:14](-[*:15])-[C;H0;+0:16](=[O;H0;+0:17])-[CH;+0:18]=[C;H0;+0:19](-[*:20])-[C;H0;+0:21]-1=[O;H0;+0:22].[OH2;+0:23].[OH2;+0:24]>>[*:12]-[c;H0;+0:13]1:[c;H0;+0:21](-[OH;+0:22]):[c;H0;+0:19](-[*:20]):[cH;+0:18]:[c;H0;+0:16](-[OH;+0:17]):[c;H0;+0:14]:1-[*:15].[*:1]-[c;H0;+0:2]1:[c;H0;+0:10](-[OH;+0:11]):[cH;+0:9]:[c;H0;+0:7](-[*:8]):[c;H0;+0:5](-[OH;+0:6]):[c;H0;+0:3]:1-[*:4].[O;H0;+0:23]=[O;H0;+0:24]
Reaction
Core-to-Core More

References

TitleAuthorsDatePubMed ID
The role of plastoquinone and beta-carotene in the primary reaction of plant photosystem II.Knaff DB, Malkin R, Myron JC, Stoller M1977 Mar 11849432
Cyanobacterial photosystem II at 2.9-A resolution and the role of quinones, lipids, channels and chloride.Guskov A, Kern J, Gabdulkhakov A, Broser M, Zouni A, Saenger W2009 Mar19219048