ID PSBZ_TOBAC Reviewed; 62 AA.
AC P09974;
DT 01-JUL-1989, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-1989, sequence version 1.
DT 27-MAR-2024, entry version 109.
DE RecName: Full=Photosystem II reaction center protein Z {ECO:0000255|HAMAP-Rule:MF_00644};
DE Short=PSII-Z {ECO:0000255|HAMAP-Rule:MF_00644};
GN Name=psbZ {ECO:0000255|HAMAP-Rule:MF_00644, ECO:0000303|PubMed:16453699};
GN Synonyms=ycf9 {ECO:0000303|PubMed:16453699};
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, SUBUNIT, SUBCELLULAR LOCATION, AND DISRUPTION PHENOTYPE.
RX PubMed=11402165; DOI=10.1105/tpc.13.6.1347;
RA Swiatek M., Kuras R., Sokolenko A., Higgs D., Olive J., Cinque G.,
RA Mueller B., Eichacker L.A., Stern D.B., Bassi R., Herrmann R.G.,
RA Wollman F.-A.;
RT "The chloroplast gene ycf9 encodes a photosystem II (PSII) core subunit,
RT PsbZ, that participates in PSII supramolecular architecture.";
RL Plant Cell 13:1347-1367(2001).
CC -!- FUNCTION: Controls the interaction of photosystem II (PSII) cores with
CC the light-harvesting antenna, aiding in the dissipation of excitation
CC energy within PSII (PubMed:11402165). PSII is a light-driven water
CC plastoquinone oxidoreductase, using light energy to abstract electrons
CC from H(2)O, generating a proton gradient subsequently used for ATP
CC formation (By similarity). {ECO:0000255|HAMAP-Rule:MF_00644,
CC ECO:0000269|PubMed:11402165}.
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 PsbY, PsbZ, Psb30/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_00644}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000255|HAMAP-Rule:MF_00644, ECO:0000269|PubMed:11402165}; Multi-
CC pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00644}.
CC Note=Associated with the photosystem II complex.
CC {ECO:0000269|PubMed:11402165}.
CC -!- DISRUPTION PHENOTYPE: Not essential, plants grow and produce fertile
CC seeds. Plants are pale green under 100 umol photons/m(2)/s at 25
CC degrees Celsius, pale green and 'dwarfed' under 10 umol photons/m(2)/s
CC at 20 degrees Celsius. Loss of PSII-light harvesting supercomplexes
CC without a decrease of major antenna proteins, in 'dwarf' conditions
CC loss of minor antenna chlorophyll a-b binding proteins CP26 (Lhcb5),
CC decreased levels of CP29 (Lhcb4). Altered phosphorylation state of PSII
CC and LHCII, impaired non-photochemical energy quenching.
CC {ECO:0000269|PubMed:11402165}.
CC -!- SIMILARITY: Belongs to the PsbZ family. {ECO:0000255|HAMAP-
CC Rule:MF_00644}.
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DR EMBL; Z00044; CAA77349.1; -; Genomic_DNA.
DR PIR; A05189; A05189.
DR RefSeq; NP_054494.1; NC_001879.2.
DR AlphaFoldDB; P09974; -.
DR SMR; P09974; -.
DR GeneID; 800480; -.
DR KEGG; nta:800480; -.
DR OMA; WRIRTMT; -.
DR OrthoDB; 829593at2759; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR GO; GO:0042549; P:photosystem II stabilization; IEA:InterPro.
DR Gene3D; 1.10.287.740; Photosystem II PsbZ, reaction centre; 1.
DR HAMAP; MF_00644; PSII_PsbZ; 1.
DR InterPro; IPR002644; PSII_PsbZ.
DR InterPro; IPR036512; PSII_PsbZ_sf.
DR NCBIfam; TIGR03043; PS_II_psbZ; 1.
DR PANTHER; PTHR34971; PHOTOSYSTEM II REACTION CENTER PROTEIN Z; 1.
DR PANTHER; PTHR34971:SF2; PHOTOSYSTEM II REACTION CENTER PROTEIN Z; 1.
DR Pfam; PF01737; Ycf9; 1.
DR SUPFAM; SSF161055; PsbZ-like; 1.
PE 1: Evidence at protein level;
KW Chloroplast; Membrane; Photosynthesis; Photosystem II; Plastid;
KW Reaction center; Thylakoid; Transmembrane; Transmembrane helix.
FT CHAIN 1..62
FT /note="Photosystem II reaction center protein Z"
FT /id="PRO_0000217730"
FT TRANSMEM 8..28
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00644"
FT TRANSMEM 41..61
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00644"
SQ SEQUENCE 62 AA; 6553 MW; 4C797B7DB28A4CF5 CRC64;
MTLAFQLAVF ALIATSLILL ISVPVVFASP DGWSSNKNVV FSGTSLWIGL VFLVGILNSL
IS
//
