PETL_MASLA
ID PETL_MASLA Reviewed; 32 AA.
AC P83795;
DT 10-MAY-2004, integrated into UniProtKB/Swiss-Prot.
DT 15-MAR-2004, sequence version 1.
DT 25-MAY-2022, entry version 67.
DE RecName: Full=Cytochrome b6-f complex subunit 6 {ECO:0000255|HAMAP-Rule:MF_00433};
DE AltName: Full=Cytochrome b6-f complex subunit PetL {ECO:0000255|HAMAP-Rule:MF_00433};
DE AltName: Full=Cytochrome b6-f complex subunit VI {ECO:0000255|HAMAP-Rule:MF_00433};
GN Name=petL {ECO:0000255|HAMAP-Rule:MF_00433};
OS Mastigocladus laminosus (Fischerella sp.).
OC Bacteria; Cyanobacteria; Nostocales; Hapalosiphonaceae; Mastigocladus.
OX NCBI_TaxID=83541;
RN [1]
RP X-RAY CRYSTALLOGRAPHY (3.0 ANGSTROMS) IN CYTOCHROME B6-F COMPLEX, FUNCTION,
RP SUBUNIT, AND SUBCELLULAR LOCATION.
RX PubMed=14526088; DOI=10.1126/science.1090165;
RA Kurisu G., Zhang H., Smith J.L., Cramer W.A.;
RT "Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning
RT the cavity.";
RL Science 302:1009-1014(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 (PubMed:14526088). PetL is important for photoautotrophic growth as
CC well as for electron transfer efficiency and stability of the
CC cytochrome b6-f complex. {ECO:0000305|PubMed:14526088}.
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. {ECO:0000269|PubMed:14526088}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane
CC {ECO:0000305|PubMed:14526088}; Single-pass membrane protein
CC {ECO:0000269|PubMed:14526088}.
CC -!- SIMILARITY: Belongs to the PetL family. {ECO:0000255|HAMAP-
CC Rule:MF_00433}.
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DR PDB; 1VF5; X-ray; 3.00 A; E/R=1-32.
DR PDB; 2D2C; X-ray; 3.80 A; E/R=1-32.
DR PDB; 2E74; X-ray; 3.00 A; E=1-32.
DR PDB; 2E75; X-ray; 3.55 A; E=1-32.
DR PDB; 2E76; X-ray; 3.41 A; E=1-32.
DR PDB; 4H0L; X-ray; 3.25 A; E=1-32.
DR PDB; 4H13; X-ray; 3.07 A; E=1-32.
DR PDB; 4I7Z; X-ray; 2.80 A; E=1-32.
DR PDB; 4PV1; X-ray; 3.00 A; E=1-32.
DR PDBsum; 1VF5; -.
DR PDBsum; 2D2C; -.
DR PDBsum; 2E74; -.
DR PDBsum; 2E75; -.
DR PDBsum; 2E76; -.
DR PDBsum; 4H0L; -.
DR PDBsum; 4H13; -.
DR PDBsum; 4I7Z; -.
DR PDBsum; 4PV1; -.
DR AlphaFoldDB; P83795; -.
DR SMR; P83795; -.
DR DrugBank; DB08453; 2-Nonyl-4-quinolinol 1-oxide.
DR DrugBank; DB04646; Dibromothymoquinone.
DR EvolutionaryTrace; P83795; -.
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:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:UniProtKB-UniRule.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR HAMAP; MF_00433; Cytb6_f_PetL; 1.
DR InterPro; IPR007802; Cyt_b6/f_cplx_su6.
PE 1: Evidence at protein level;
KW 3D-structure; Electron transport; Membrane; Photosynthesis; Thylakoid;
KW Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..32
FT /note="Cytochrome b6-f complex subunit 6"
FT /id="PRO_0000220486"
FT TRANSMEM 6..26
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00433,
FT ECO:0000305|PubMed:14526088"
FT HELIX 3..27
FT /evidence="ECO:0007829|PDB:4I7Z"
FT TURN 28..30
FT /evidence="ECO:0007829|PDB:2E74"
SQ SEQUENCE 32 AA; 3502 MW; B9C10271C3DE499F CRC64;
MILGAVFYIV FIALFFGIAV GIIFAIKSIK LI
