Protein Domain : IPR003372

Type:  Family Name:  Photosystem II PsbL
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 low molecular weight transmembrane protein PsbL found in PSII. PsbL is located in a gene cluster with PsbE, PsbF and PsbJ (PsbEFJL). Both PsbL and PsbJ () are essential for proper assembly of the OEC. Mutations in PsbL prevent the formation of both PSII core dimers and PSII-light harvesting complex []. In addition, both PsbL and PsbJ are involved in the unidirectional flow of electrons, where PsbJ regulates the forward electron flow from D2 (Qa) to the plastoquinone pool, and PsbL prevents the reduction of PSII by back electron flow from plastoquinol protecting PSII from photo-inactivation []. Short Name:  PSII_PsbL
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0 Child Features

0 Contains

3 Cross Referencess

Identifier
PF02419
PD005113
MF_01317

0 Found In

4 GO Annotations

GO Term Gene Name
GO:0015979 IPR003372
GO:0009523 IPR003372
GO:0009539 IPR003372
GO:0016020 IPR003372

4 Ontology Annotations

GO Term Gene Name
GO:0015979 IPR003372
GO:0009523 IPR003372
GO:0009539 IPR003372
GO:0016020 IPR003372

0 Parent Features

386 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
ATCG00560.1 P60129 PAC:19638029 Arabidopsis thaliana 38  
Potri.002G237300.1 A0A2K2BNG4 PAC:27019952 Populus trichocarpa 81  
Gorai.007G253400.1 A0A0D2TLA0 PAC:26785320 Gossypium raimondii 38  
Gorai.007G008800.1 A0A0D2P093 PAC:26780663 Gossypium raimondii 85  
Glyma.12G232700.1.p K7LWI6 PAC:30548962 Glycine max 142  
Medtr4g050850.1 G7JFY7 PAC:31115005 Medicago truncatula 136  
Kalax.1783s0003.1.p PAC:32558871 Kalanchoe laxiflora 142  
Sphfalx0020s0201.1.p PAC:32621116 Sphagnum fallax 38  
Seita.J013200.1.p PAC:32706051 Setaria italica 142  
Seita.J021600.1.p PAC:32706120 Setaria italica 142  
Bradi1g05779.1.p A0A0Q3JKU1 PAC:32804699 Brachypodium distachyon 142  
Bradi5g23871.1.p PAC:32809369 Brachypodium distachyon 142  
Bradi1g39213.1.p PAC:32792020 Brachypodium distachyon 142  
Bradi3g03941.1.p PAC:32820761 Brachypodium distachyon 38  
Bradi3g27337.1.p PAC:32821012 Brachypodium distachyon 38  
Aqcoe7G231000.1.p PAC:33070758 Aquilegia coerulea 117  
Aqcoe2G164200.1.p PAC:33055549 Aquilegia coerulea 142  
Aqcoe2G194200.1.p A0A2G5DIW7 PAC:33058571 Aquilegia coerulea 38  
Aqcoe2G188800.1.p PAC:33056357 Aquilegia coerulea 75  
Brdisv1Per11043919m.p A0A0Q3FC53 PAC:33246689 Brachypodium distachyon Per1 38  
Brdisv1Per11043920m.p PAC:33247644 Brachypodium distachyon Per1 142  
Brdisv1Per11006561m.p PAC:33227684 Brachypodium distachyon Per1 142  
Brdisv1Uni21045368m.p PAC:33257235 Brachypodium distachyon Uni2 145  
Brdisv1BdTR7a1031254m.p PAC:33364371 Brachypodium distachyon BdTR7a 145  
Brdisv1BdTR7a1044956m.p PAC:33377305 Brachypodium distachyon BdTR7a 129  
Brdisv1BdTR7a1002544m.p PAC:33349312 Brachypodium distachyon BdTR7a 38  
Brdisv1Koz-11041347m.p PAC:33423885 Brachypodium distachyon Koz-1 142  
Brdisv1Koz-11047086m.p PAC:33386650 Brachypodium distachyon Koz-1 142  
Brdisv1Koz-11047147m.p PAC:33388095 Brachypodium distachyon Koz-1 142  
Brdisv1Koz-11047064m.p PAC:33387722 Brachypodium distachyon Koz-1 142  

5 Publications

First Author Title Year Journal Volume Pages PubMed ID
            12518057
            14871485
            15100025
            14979726
            14686923