PETN_GUITH
ID PETN_GUITH Reviewed; 29 AA.
AC O78498;
DT 15-DEC-1998, integrated into UniProtKB/Swiss-Prot.
DT 01-NOV-1998, sequence version 1.
DT 25-MAY-2022, entry version 85.
DE RecName: Full=Cytochrome b6-f complex subunit 8;
DE AltName: Full=Cytochrome b6-f complex subunit PetN;
DE AltName: Full=Cytochrome b6-f complex subunit VIII;
GN Name=petN; Synonyms=ycf6;
OS Guillardia theta (Cryptophyte) (Cryptomonas phi).
OG Plastid; Chloroplast.
OC Eukaryota; Cryptophyceae; Pyrenomonadales; Geminigeraceae; Guillardia.
OX NCBI_TaxID=55529;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=9929392; DOI=10.1007/pl00006462;
RA Douglas S.E., Penny S.L.;
RT "The plastid genome of the cryptophyte alga, Guillardia theta: complete
RT sequence and conserved synteny groups confirm its common ancestry with red
RT algae.";
RL J. Mol. Evol. 48:236-244(1999).
CC -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates
CC electron transfer between photosystem II (PSII) and photosystem I
CC (PSI), cyclic electron flow around PSI, and state transitions.
CC {ECO:0000250}.
CC -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and
CC the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and
CC PetN. The complex functions as a dimer (By similarity). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000250}; Single-pass membrane protein {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the PetN family. {ECO:0000305}.
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DR EMBL; AF041468; AAC35689.1; -; Genomic_DNA.
DR RefSeq; NP_050755.1; NC_000926.1.
DR AlphaFoldDB; O78498; -.
DR SMR; O78498; -.
DR GeneID; 857060; -.
DR HOGENOM; CLU_215774_2_0_1; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009512; C:cytochrome b6f complex; IEA:InterPro.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:InterPro.
DR GO; GO:0017004; P:cytochrome complex assembly; IEA:UniProtKB-UniRule.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR HAMAP; MF_00395; Cytb6_f_PetN; 1.
DR InterPro; IPR036143; Cytochr_b6-f_cplx_su8_sf.
DR InterPro; IPR005497; Cytochrome_b6-f_cplx_su8.
DR Pfam; PF03742; PetN; 1.
DR SUPFAM; SSF103451; SSF103451; 1.
PE 3: Inferred from homology;
KW Chloroplast; Electron transport; Membrane; Photosynthesis; Plastid;
KW Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..29
FT /note="Cytochrome b6-f complex subunit 8"
FT /id="PRO_0000217109"
FT TRANSMEM 3..23
FT /note="Helical"
FT /evidence="ECO:0000255"
SQ SEQUENCE 29 AA; 3231 MW; 13FB2B1B7B3525BD CRC64;
MDILSLGWSA LMVVFTFSLA LVVWGRNGF