ID   PETN_CHLRE              Reviewed;          35 AA.
AC   P0C1D4; A8J9I7;
DT   16-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   22-FEB-2012, sequence version 2.
DT   03-AUG-2022, entry version 58.
DE   RecName: Full=Cytochrome b6-f complex subunit 8, chloroplastic;
DE   AltName: Full=Cytochrome b6-f complex subunit PetN;
DE   AltName: Full=Cytochrome b6-f complex subunit VIII;
GN   Name=PETN; ORFNames=CHLREDRAFT_177155;
OS   Chlamydomonas reinhardtii (Chlamydomonas smithii).
OC   Eukaryota; Viridiplantae; Chlorophyta; core chlorophytes; Chlorophyceae;
OC   CS clade; Chlamydomonadales; Chlamydomonadaceae; Chlamydomonas.
OX   NCBI_TaxID=3055;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CC-503;
RX   PubMed=17932292; DOI=10.1126/science.1143609;
RA   Merchant S.S., Prochnik S.E., Vallon O., Harris E.H., Karpowicz S.J.,
RA   Witman G.B., Terry A., Salamov A., Fritz-Laylin L.K., Marechal-Drouard L.,
RA   Marshall W.F., Qu L.H., Nelson D.R., Sanderfoot A.A., Spalding M.H.,
RA   Kapitonov V.V., Ren Q., Ferris P., Lindquist E., Shapiro H., Lucas S.M.,
RA   Grimwood J., Schmutz J., Cardol P., Cerutti H., Chanfreau G., Chen C.L.,
RA   Cognat V., Croft M.T., Dent R., Dutcher S., Fernandez E., Fukuzawa H.,
RA   Gonzalez-Ballester D., Gonzalez-Halphen D., Hallmann A., Hanikenne M.,
RA   Hippler M., Inwood W., Jabbari K., Kalanon M., Kuras R., Lefebvre P.A.,
RA   Lemaire S.D., Lobanov A.V., Lohr M., Manuell A., Meier I., Mets L.,
RA   Mittag M., Mittelmeier T., Moroney J.V., Moseley J., Napoli C.,
RA   Nedelcu A.M., Niyogi K., Novoselov S.V., Paulsen I.T., Pazour G.J.,
RA   Purton S., Ral J.P., Riano-Pachon D.M., Riekhof W., Rymarquis L.,
RA   Schroda M., Stern D., Umen J., Willows R., Wilson N., Zimmer S.L.,
RA   Allmer J., Balk J., Bisova K., Chen C.J., Elias M., Gendler K., Hauser C.,
RA   Lamb M.R., Ledford H., Long J.C., Minagawa J., Page M.D., Pan J.,
RA   Pootakham W., Roje S., Rose A., Stahlberg E., Terauchi A.M., Yang P.,
RA   Ball S., Bowler C., Dieckmann C.L., Gladyshev V.N., Green P., Jorgensen R.,
RA   Mayfield S., Mueller-Roeber B., Rajamani S., Sayre R.T., Brokstein P.,
RA   Dubchak I., Goodstein D., Hornick L., Huang Y.W., Jhaveri J., Luo Y.,
RA   Martinez D., Ngau W.C., Otillar B., Poliakov A., Porter A., Szajkowski L.,
RA   Werner G., Zhou K., Grigoriev I.V., Rokhsar D.S., Grossman A.R.;
RT   "The Chlamydomonas genome reveals the evolution of key animal and plant
RT   functions.";
RL   Science 318:245-250(2007).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 2-35.
RX   PubMed=10691129; DOI=10.1093/dnares/6.6.369;
RA   Asamizu E., Nakamura Y., Sato S., Fukuzawa H., Tabata S.;
RT   "A large scale structural analysis of cDNAs in a unicellular green alga,
RT   Chlamydomonas reinhardtii. I. Generation of 3433 non-redundant expressed
RT   sequence tags.";
RL   DNA Res. 6:369-373(1999).
RN   [3]
RP   X-RAY CRYSTALLOGRAPHY (3.1 ANGSTROMS) OF 5-35.
RX   PubMed=14647374; DOI=10.1038/nature02155;
RA   Stroebel D., Choquet Y., Popot J.-L., Picot D.;
RT   "An atypical haem in the cytochrome b(6)f complex.";
RL   Nature 426:413-418(2003).
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   -!- 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.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single-
CC       pass membrane protein.
CC   -!- MISCELLANEOUS: Unlike its orthologs this protein is not encoded in the
CC       chloroplast.
CC   -!- SIMILARITY: Belongs to the PetN family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=EDO99536.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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; DS496146; EDO99536.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; AV388719; -; NOT_ANNOTATED_CDS; mRNA.
DR   PDB; 1Q90; X-ray; 3.10 A; N=5-35.
DR   PDBsum; 1Q90; -.
DR   AlphaFoldDB; P0C1D4; -.
DR   SMR; P0C1D4; -.
DR   IntAct; P0C1D4; 1.
DR   STRING; 3055.EDO99536; -.
DR   PaxDb; P0C1D4; -.
DR   eggNOG; ENOG502SX6V; Eukaryota.
DR   HOGENOM; CLU_2213418_0_0_1; -.
DR   InParanoid; P0C1D4; -.
DR   OrthoDB; 1644755at2759; -.
DR   BioCyc; MetaCyc:CHLREDRAFT_177155-MON; -.
DR   EvolutionaryTrace; P0C1D4; -.
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:InterPro.
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   1: Evidence at protein level;
KW   3D-structure; Chloroplast; Electron transport; Membrane; Photosynthesis;
KW   Plastid; Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..35
FT                   /note="Cytochrome b6-f complex subunit 8, chloroplastic"
FT                   /id="PRO_0000415884"
FT   TRANSMEM        10..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   HELIX           8..32
FT                   /evidence="ECO:0007829|PDB:1Q90"
SQ   SEQUENCE   35 AA;  3727 MW;  2DB9E4A2E007C486 CRC64;
     MLAEGEPAIV QIGWAATCVM FSFSLSLVVW GRSGL