ID   PSBJ_TOBAC              Reviewed;          40 AA.
AC   P69692; P12190;
DT   29-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   29-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 47.
DE   RecName: Full=Photosystem II reaction center protein J {ECO:0000255|HAMAP-Rule:MF_01305};
DE            Short=PSII-J {ECO:0000255|HAMAP-Rule:MF_01305};
GN   Name=psbJ {ECO:0000255|HAMAP-Rule:MF_01305};
OS   Nicotiana tabacum (Common tobacco).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC   Nicotiana.
OX   NCBI_TaxID=4097;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Bright Yellow 4;
RX   PubMed=16453699; DOI=10.1002/j.1460-2075.1986.tb04464.x;
RA   Shinozaki K., Ohme M., Tanaka M., Wakasugi T., Hayashida N.,
RA   Matsubayashi T., Zaita N., Chunwongse J., Obokata J.,
RA   Yamaguchi-Shinozaki K., Ohto C., Torazawa K., Meng B.-Y., Sugita M.,
RA   Deno H., Kamogashira T., Yamada K., Kusuda J., Takaiwa F., Kato A.,
RA   Tohdoh N., Shimada H., Sugiura M.;
RT   "The complete nucleotide sequence of the tobacco chloroplast genome: its
RT   gene organization and expression.";
RL   EMBO J. 5:2043-2049(1986).
RN   [2]
RP   FUNCTION, AND DISRUPTION PHENOTYPE.
RC   STRAIN=cv. Petit Havana;
RX   PubMed=11546758; DOI=10.1074/jbc.m102007200;
RA   Regel R.E., Ivleva N.B., Zer H., Meurer J., Shestakov S.V., Herrmann R.G.,
RA   Pakrasi H.B., Ohad I.;
RT   "Deregulation of electron flow within photosystem II in the absence of the
RT   PsbJ protein.";
RL   J. Biol. Chem. 276:41473-41478(2001).
RN   [3]
RP   FUNCTION, SUBUNIT, AND DISRUPTION PHENOTYPE.
RC   STRAIN=cv. Petit Havana;
RX   PubMed=11827973; DOI=10.1074/jbc.m112053200;
RA   Hager M., Hermann M., Biehler K., Krieger-Liszkay A., Bock R.;
RT   "Lack of the small plastid-encoded PsbJ polypeptide results in a defective
RT   water-splitting apparatus of photosystem II, reduced photosystem I levels,
RT   and hypersensitivity to light.";
RL   J. Biol. Chem. 277:14031-14039(2002).
RN   [4]
RP   FUNCTION, AND DISRUPTION PHENOTYPE.
RC   STRAIN=cv. Petit Havana;
RX   PubMed=12655396; DOI=10.1007/s00438-002-0791-1;
RA   Swiatek M., Regel R.E., Meurer J., Wanner G., Pakrasi H.B., Ohad I.,
RA   Herrmann R.G.;
RT   "Effects of selective inactivation of individual genes for low-molecular-
RT   mass subunits on the assembly of photosystem II, as revealed by chloroplast
RT   transformation: the psbEFLJoperon in Nicotiana tabacum.";
RL   Mol. Genet. Genomics 268:699-710(2003).
RN   [5]
RP   FUNCTION, AND DISRUPTION PHENOTYPE.
RC   STRAIN=cv. Petit Havana;
RX   PubMed=14979726; DOI=10.1021/bi0348260;
RA   Ohad I., Dal Bosco C., Herrmann R.G., Meurer J.;
RT   "Photosystem II proteins PsbL and PsbJ regulate electron flow to the
RT   plastoquinone pool.";
RL   Biochemistry 43:2297-2308(2004).
CC   -!- FUNCTION: One of the components of the core complex of photosystem II
CC       (PSII). Essential for PSII function, it may be important for
CC       unidirectionality of electron flow (PubMed:11546758, PubMed:12655396,
CC       PubMed:14979726) and/or assembly of the oxygen evolving complex
CC       (PubMed:11827973). 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. {ECO:0000255|HAMAP-Rule:MF_01305,
CC       ECO:0000269|PubMed:11546758, ECO:0000269|PubMed:11827973,
CC       ECO:0000269|PubMed:12655396, ECO:0000269|PubMed:14979726}.
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, Ycf12, at least 3 peripheral proteins of the oxygen-
CC       evolving complex and a large number of cofactors. It forms dimeric
CC       complexes. {ECO:0000255|HAMAP-Rule:MF_01305,
CC       ECO:0000305|PubMed:11827973}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01305}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01305}.
CC   -!- DISRUPTION PHENOTYPE: Able to assemble functional PSII, however
CC       electron flow is deregulated; forward flow from Q(A) to plastoquinone
CC       is slower while reduction of the oxygen evolving complex is faster,
CC       loss of light-activated, redox-dependent phosphorylation of LCHII,
CC       plants senesce quickly (PubMed:11546758, PubMed:12655396,
CC       PubMed:14979726). Plants are hypersensitive to light, cannot grow
CC       photoautotrophically and have drastically reduced oxygen-evolving
CC       capacity. Dramatic reduction in PSI subunits, almost complete loss of
CC       PsbP, a subunit of the oxygen-evolving complex (PubMed:11827973).
CC       {ECO:0000269|PubMed:11546758, ECO:0000269|PubMed:11827973,
CC       ECO:0000269|PubMed:12655396, ECO:0000269|PubMed:14979726}.
CC   -!- SIMILARITY: Belongs to the PsbJ family. {ECO:0000255|HAMAP-
CC       Rule:MF_01305}.
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DR   EMBL; Z00044; CAA77417.1; -; Genomic_DNA.
DR   PIR; S05686; S05686.
DR   RefSeq; NP_054514.1; NC_001879.2.
DR   AlphaFoldDB; P69692; -.
DR   SMR; P69692; -.
DR   GeneID; 800496; -.
DR   KEGG; nta:800496; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01305; PSII_PsbJ; 1.
DR   InterPro; IPR002682; PSII_PsbJ.
DR   InterPro; IPR037267; PSII_PsbJ_sf.
DR   PANTHER; PTHR34812; PTHR34812; 1.
DR   Pfam; PF01788; PsbJ; 1.
DR   SUPFAM; SSF161021; SSF161021; 1.
PE   1: Evidence at protein level;
KW   Chloroplast; Membrane; Photosynthesis; Photosystem II; Plastid;
KW   Reaction center; Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..40
FT                   /note="Photosystem II reaction center protein J"
FT                   /id="PRO_0000216620"
FT   TRANSMEM        8..28
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01305"
SQ   SEQUENCE   40 AA;  4131 MW;  565920BE0A4AB88C CRC64;
     MADTTGRIPL WIIGTVAGIL VIGLIGIFFY GSYSGLGSSL