Protein Domain : IPR006241

Type:  Family Name:  Photosystem II cytochrome b559, beta subunit
Description:  Oxygenic photosynthesis uses two multi-subunit photosystems (I and II) located in the cell membranes of cyanobacteria and in the thylakoid membranes of chloroplasts in plants and algae. Photosystem II (PSII) has a P680 reaction centre containing chlorophyll 'a' that uses light energy to carry out the oxidation (splitting) of water molecules, and to produce ATP via a proton pump. Photosystem I (PSI) has a P700 reaction centre containing chlorophyll that takes the electron and associated hydrogen donated from PSII to reduce NADP+ to NADPH. Both ATP and NADPH are subsequently used in the light-independent reactions to convert carbon dioxide to glucose using the hydrogen atom extracted from water by PSII, releasing oxygen as a by-product.PSII is a multisubunit protein-pigment complex containing polypeptides both intrinsic and extrinsic to the photosynthetic membrane [, ]. Within the core of the complex, the chlorophyll and beta-carotene pigments are mainly bound to the antenna proteins CP43 (PsbC) and CP47 (PsbB), which pass the excitation energy on to the reaction centre proteins D1 (Qb, PsbA) and D2 (Qa, PsbD) that bind all the redox-active cofactors involved in the energy conversion process. The PSII oxygen-evolving complex (OEC) oxidises water to provide protons for use by PSI, and consists of OEE1 (PsbO), OEE2 (PsbP) and OEE3 (PsbQ). The remaining subunits in PSII are of low molecular weight (less than 10 kDa), and are involved in PSII assembly, stabilisation, dimerisation, and photo-protection []. This family represents the beta subunit (PsbF) of cytochrome b559, which forms a haem-binding heterodimer with the alpha subunit (PsbE) () within the reaction centre core of PSII. Both PsbE and PsbF are essential components for PSII assembly, and are probably involved in secondary electron transport mechanisms that help to protect PSII from photo-damage []. Short Name:  PSII_cyt_b559_bsu
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0 Child Features

2 Contains

DB identifier Type Name
IPR013081 Domain Photosystem II cytochrome b559, N-terminal
IPR006216 Conserved_site Photosystem II cytochrome b559, conserved site

3 Cross Referencess

Identifier
PIRSF000037
TIGR01333
MF_00643

0 Found In

7 GO Annotations

GO Term Gene Name
GO:0020037 IPR006241
GO:0009767 IPR006241
GO:0015979 IPR006241
GO:0019684 IPR006241
GO:0009523 IPR006241
GO:0009539 IPR006241
GO:0016021 IPR006241

7 Ontology Annotations

GO Term Gene Name
GO:0020037 IPR006241
GO:0009767 IPR006241
GO:0015979 IPR006241
GO:0019684 IPR006241
GO:0009523 IPR006241
GO:0009539 IPR006241
GO:0016021 IPR006241

0 Parent Features

249 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
ATCG00570.1 P62095 PAC:19637979 Arabidopsis thaliana 39  
Spipo0G0132300 PAC:31508810 Spirodela polyrhiza 71  
Pahal.B00694.1 PAC:32505945 Panicum hallii 50  
Bradi2g23535.1.p A0A0Q3MP81 PAC:32771892 Brachypodium distachyon 39  
Bradi3g03943.1.p B3TN66 PAC:32818112 Brachypodium distachyon 39  
Aco019126.1 PAC:33045629 Ananas comosus 366  
Brdisv1Per11017226m.p A0A0Q3MP81 PAC:33217682 Brachypodium distachyon Per1 39  
Brdisv1Uni21035629m.p PAC:33291239 Brachypodium distachyon Uni2 39  
Brdisv1BdTR7a1017009m.p A0A0Q3MP81 PAC:33361938 Brachypodium distachyon BdTR7a 39  
Brdisv1Koz-11038099m.p A0A0Q3MP81 PAC:33419108 Brachypodium distachyon Koz-1 39  
Brdisv1Koz-11047092m.p PAC:33387121 Brachypodium distachyon Koz-1 39  
Brdisv1Koz-11047124m.p PAC:33386931 Brachypodium distachyon Koz-1 39  
Brdisv20Bd21Ref1018228m.p A0A0Q3MP81 PAC:33427029 Brachypodium distachyon Bd21 AnntCtrl 39  
Brdisv1ABR9_r1015726m.p PAC:33538450 Brachypodium distachyon ABR9 39  
Brdisv1ABR9_r1026423m.p B3TN66 PAC:33542952 Brachypodium distachyon ABR9 39  
Brdisv1BdTR13a1047477m.p PAC:33559358 Brachypodium distachyon BdTR13a 39  
Brdisv1BdTR13a1047513m.p PAC:33560107 Brachypodium distachyon BdTR13a 39  
Brdisv1BdTR13a1039615m.p A0A0Q3MP81 PAC:33590155 Brachypodium distachyon BdTR13a 39  
Brdisv1BdTR13a1045652m.p PAC:33598405 Brachypodium distachyon BdTR13a 39  
Brdisv1pangenome1031493m.p A0A0Q3MP81 PAC:33616807 Brachypodium distachyon Pangenome 39  
Brdisv1ABR6_r1017284m.p A0A0Q3MP81 PAC:33687327 Brachypodium distachyon ABR6 39  
Brdisv1ABR21026779m.p A0A0Q3MP81 PAC:33710398 Brachypodium distachyon ABR2 39  
Brdisv1Bis-11045518m.p PAC:33770723 Brachypodium distachyon Bis-1 107  
Brdisv1Bis-11035471m.p A0A0Q3MP81 PAC:33790102 Brachypodium distachyon Bis-1 39  
Brdisv1Gaz-81023731m.p PAC:33822902 Brachypodium distachyon Gaz-8 39  
Brdisv1S8iiC1026270m.p PAC:33843554 Brachypodium distachyon S8iic 39  
Brdisv1Kah-51047058m.p PAC:33957864 Brachypodium distachyon Kah-5 107  
Brdisv1ABR31036313m.p A0A0Q3MP81 PAC:34008208 Brachypodium distachyon ABR3 39  
Brdisv1ABR31040887m.p B3TN66 PAC:34017591 Brachypodium distachyon ABR3 39  
Brdisv1Bd30-11015695m.p A0A0Q3MP81 PAC:34036587 Brachypodium distachyon Bd30-1 39  

4 Publications

First Author Title Year Journal Volume Pages PubMed ID
            12518057
            14871485
            15100025
            12560096