ID A0A0D6ASQ5_9CHRO Unreviewed; 355 AA.
AC A0A0D6ASQ5;
DT 27-MAY-2015, integrated into UniProtKB/TrEMBL.
DT 27-MAY-2015, sequence version 1.
DT 27-MAR-2024, entry version 47.
DE RecName: Full=Photosystem II protein D1 {ECO:0000256|HAMAP-Rule:MF_01379};
DE Short=PSII D1 protein {ECO:0000256|HAMAP-Rule:MF_01379};
DE EC=1.10.3.9 {ECO:0000256|HAMAP-Rule:MF_01379};
DE AltName: Full=Photosystem II Q(B) protein {ECO:0000256|HAMAP-Rule:MF_01379};
GN Name=psbA {ECO:0000256|HAMAP-Rule:MF_01379};
GN ORFNames=GM3709_2229 {ECO:0000313|EMBL:BAQ65464.1};
OS Geminocystis sp. NIES-3709.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Chroococcales; Geminocystaceae; Geminocystis.
OX NCBI_TaxID=1617448 {ECO:0000313|EMBL:BAQ65464.1, ECO:0000313|Proteomes:UP000064126};
RN [1] {ECO:0000313|EMBL:BAQ65464.1, ECO:0000313|Proteomes:UP000064126}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NIES-3709 {ECO:0000313|EMBL:BAQ65464.1,
RC ECO:0000313|Proteomes:UP000064126};
RA Hirose Y.;
RT "Geminocystis sp. NIES-3709 complete genome sequence.";
RL Submitted (MAR-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Photosystem II (PSII) is a light-driven water:plastoquinone
CC oxidoreductase that uses light energy to abstract electrons from H(2)O,
CC generating O(2) and a proton gradient subsequently used for ATP
CC formation. It consists of a core antenna complex that captures photons,
CC and an electron transfer chain that converts photonic excitation into a
CC charge separation. The D1/D2 (PsbA/PsbD) reaction center heterodimer
CC binds P680, the primary electron donor of PSII as well as several
CC subsequent electron acceptors. {ECO:0000256|ARBA:ARBA00037683,
CC ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 a plastoquinone + 2 H2O + 4 hnu = 2 a plastoquinol + O2;
CC Xref=Rhea:RHEA:36359, Rhea:RHEA-COMP:9561, Rhea:RHEA-COMP:9562,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15379, ChEBI:CHEBI:17757,
CC ChEBI:CHEBI:30212, ChEBI:CHEBI:62192; EC=1.10.3.9;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01379};
CC -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA,
CC PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT,
CC PsbX, PsbY, PsbZ, Psb30/Ycf12, peripheral proteins PsbO, CyanoQ (PsbQ),
CC PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.
CC {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane
CC {ECO:0000256|ARBA:ARBA00004636, ECO:0000256|HAMAP-Rule:MF_01379};
CC Multi-pass membrane protein {ECO:0000256|ARBA:ARBA00004636,
CC ECO:0000256|HAMAP-Rule:MF_01379}. Membrane
CC {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
CC -!- PTM: C-terminally processed by CtpA; processing is essential to allow
CC assembly of the oxygen-evolving complex and thus photosynthetic growth.
CC {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- PTM: Tyr-160 forms a radical intermediate that is referred to as redox-
CC active TyrZ, YZ or Y-Z. {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- MISCELLANEOUS: 2 of the reaction center chlorophylls (ChlD1 and ChlD2)
CC are entirely coordinated by water. {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- MISCELLANEOUS: Cyanobacteriota usually contain more than 2 copies of
CC the psbA gene. {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- MISCELLANEOUS: Herbicides such as atrazine, BNT, diuron or ioxynil bind
CC in the Q(B) binding site and block subsequent electron transfer.
CC {ECO:0000256|HAMAP-Rule:MF_01379}.
CC -!- SIMILARITY: Belongs to the reaction center PufL/M/PsbA/D family.
CC {ECO:0000256|ARBA:ARBA00008204, ECO:0000256|HAMAP-Rule:MF_01379,
CC ECO:0000256|RuleBase:RU004331}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AP014821; BAQ65464.1; -; Genomic_DNA.
DR RefSeq; WP_066119090.1; NZ_AP014821.1.
DR AlphaFoldDB; A0A0D6ASQ5; -.
DR STRING; 1617448.GM3709_2229; -.
DR KEGG; gen:GM3709_2229; -.
DR PATRIC; fig|1617448.3.peg.2264; -.
DR OrthoDB; 505356at2; -.
DR Proteomes; UP000064126; Chromosome.
DR GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-UniRule.
DR GO; GO:0045156; F:electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity; IEA:InterPro.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016682; F:oxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor; IEA:UniProtKB-UniRule.
DR GO; GO:0010242; F:oxygen evolving activity; IEA:UniProtKB-EC.
DR GO; GO:0009772; P:photosynthetic electron transport in photosystem II; IEA:InterPro.
DR GO; GO:0009635; P:response to herbicide; IEA:UniProtKB-KW.
DR CDD; cd09289; Photosystem-II_D1; 1.
DR Gene3D; 1.20.85.10; Photosystem II protein D1-like; 2.
DR HAMAP; MF_01379; PSII_PsbA_D1; 1.
DR InterPro; IPR036854; Photo_II_D1/D2_sf.
DR InterPro; IPR000484; Photo_RC_L/M.
DR InterPro; IPR005867; PSII_D1.
DR NCBIfam; TIGR01151; psbA; 1.
DR PANTHER; PTHR33149; PHOTOSYSTEM II PROTEIN D1; 1.
DR PANTHER; PTHR33149:SF12; PHOTOSYSTEM II PROTEIN D1; 1.
DR Pfam; PF00124; Photo_RC; 1.
DR PRINTS; PR00256; REACTNCENTRE.
DR SUPFAM; SSF81483; Bacterial photosystem II reaction centre, L and M subunits; 1.
DR PROSITE; PS00244; REACTION_CENTER; 1.
PE 3: Inferred from homology;
KW Calcium {ECO:0000256|ARBA:ARBA00022837, ECO:0000256|HAMAP-Rule:MF_01379};
KW Chlorophyll {ECO:0000256|ARBA:ARBA00022494, ECO:0000256|HAMAP-
KW Rule:MF_01379};
KW Chromophore {ECO:0000256|ARBA:ARBA00022991, ECO:0000256|HAMAP-
KW Rule:MF_01379}; Electron transport {ECO:0000256|HAMAP-Rule:MF_01379};
KW Herbicide resistance {ECO:0000256|ARBA:ARBA00022646, ECO:0000256|HAMAP-
KW Rule:MF_01379}; Iron {ECO:0000256|HAMAP-Rule:MF_01379};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01379};
KW Manganese {ECO:0000256|ARBA:ARBA00023211, ECO:0000256|HAMAP-Rule:MF_01379};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_01379};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01379}; Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_01379};
KW Photosynthesis {ECO:0000256|ARBA:ARBA00022531, ECO:0000256|HAMAP-
KW Rule:MF_01379}; Photosystem II {ECO:0000256|HAMAP-Rule:MF_01379};
KW Thylakoid {ECO:0000256|HAMAP-Rule:MF_01379};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_01379};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_01379}; Transport {ECO:0000256|HAMAP-Rule:MF_01379}.
FT CHAIN 1..343
FT /note="Photosystem II protein D1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT /id="PRO_5023255466"
FT PROPEP 344..355
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT /id="PRO_5007334471"
FT TRANSMEM 28..54
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 108..126
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 138..160
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 197..217
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 269..294
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT BINDING 117
FT /ligand="chlorophyll a"
FT /ligand_id="ChEBI:CHEBI:58416"
FT /ligand_label="ChlzD1"
FT /ligand_part="Mg"
FT /ligand_part_id="ChEBI:CHEBI:25107"
FT /note="axial binding residue"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 125
FT /ligand="pheophytin a"
FT /ligand_id="ChEBI:CHEBI:136840"
FT /ligand_label="D1"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 169
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 188
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 197
FT /ligand="chlorophyll a"
FT /ligand_id="ChEBI:CHEBI:58416"
FT /ligand_label="PD1"
FT /ligand_part="Mg"
FT /ligand_part_id="ChEBI:CHEBI:25107"
FT /note="axial binding residue"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 214
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 214
FT /ligand="a quinone"
FT /ligand_id="ChEBI:CHEBI:132124"
FT /ligand_label="B"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 263..264
FT /ligand="a quinone"
FT /ligand_id="ChEBI:CHEBI:132124"
FT /ligand_label="B"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 271
FT /ligand="Fe cation"
FT /ligand_id="ChEBI:CHEBI:24875"
FT /ligand_note="ligand shared with heterodimeric partner"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 331
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 332
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 341
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT BINDING 343
FT /ligand="[CaMn4O5] cluster"
FT /ligand_id="ChEBI:CHEBI:189552"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT SITE 160
FT /note="Tyrosine radical intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT SITE 189
FT /note="Stabilizes free radical intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
FT SITE 343..344
FT /note="Cleavage; by CtpA"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01379"
SQ SEQUENCE 355 AA; 39233 MW; 0FC1D48A8255A2E7 CRC64;
MTTTLQQQQS STWEQFCQWI TSTNNRLYVG WFGTLMIPTL LTATTCFIIA FIAAPPVDID
GIREPVAGSL LYGNNIISGA VVPSSNAIGL HFYPIWEAAS LDEWLYNGGP YQLVVFHFLI
GIFCYMGRQW ELSFRLGMRP WICVAYSAPV SAATAVFLIY PIGQGSFSDG MPLGISGTFN
FMFVFQAEHN ILMHPFHMLG VAGVFGGSLF SAMHGSLVTS SLVRETTETE SQNYGYKFGQ
EEETYNIVAA HGYFGRLIFQ YASFNNSRAL HFFLGAWPVI GIWFTAMGVS TMAFNLNGFN
FNQSILDSQG HVIGTWADVL NRANIGIEVM HERNAHNFPL DLASAEPVSA PVING
//
