ID   PSAL_NOSS1              Reviewed;         172 AA.
AC   P58577;
DT   23-JAN-2002, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2002, sequence version 1.
DT   25-MAY-2022, entry version 105.
DE   RecName: Full=Photosystem I reaction center subunit XI;
DE   AltName: Full=PSI subunit V;
DE   AltName: Full=PSI-L;
GN   Name=psaL; OrderedLocusNames=all0107;
OS   Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=103690;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA   Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA   Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA   Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT   "Complete genomic sequence of the filamentous nitrogen-fixing
RT   cyanobacterium Anabaena sp. strain PCC 7120.";
RL   DNA Res. 8:205-213(2001).
RN   [2]
RP   PROTEIN SEQUENCE OF 2-28, SUBUNIT, AND SUBCELLULAR LOCATION.
RC   STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX   PubMed=24550276; DOI=10.1073/pnas.1320599111;
RA   Watanabe M., Semchonok D.A., Webber-Birungi M.T., Ehira S., Kondo K.,
RA   Narikawa R., Ohmori M., Boekema E.J., Ikeuchi M.;
RT   "Attachment of phycobilisomes in an antenna-photosystem I supercomplex of
RT   cyanobacteria.";
RL   Proc. Natl. Acad. Sci. U.S.A. 111:2512-2517(2014).
CC   -!- SUBUNIT: The cyanobacterial PSI reaction center is composed of one copy
CC       each of PsaA,B,C,D,E,F,I,J,K,L,M and X, and forms dimeric and
CC       tetrameric complexes. {ECO:0000269|PubMed:24550276}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane
CC       {ECO:0000269|PubMed:24550276}; Multi-pass membrane protein
CC       {ECO:0000250}.
CC   -!- PTM: Two stable N-terminal degradation products have been sequenced at
CC       the protein level. {ECO:0000269|PubMed:24550276}.
CC   -!- SIMILARITY: Belongs to the PsaL family. {ECO:0000305}.
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DR   EMBL; BA000019; BAB77631.1; -; Genomic_DNA.
DR   PIR; AC1820; AC1820.
DR   RefSeq; WP_010994284.1; NZ_RSCN01000016.1.
DR   PDB; 6JEO; EM; 3.30 A; aL/bL/cL/dL=1-172.
DR   PDB; 6K61; EM; 2.37 A; L/l=1-172.
DR   PDBsum; 6JEO; -.
DR   PDBsum; 6K61; -.
DR   AlphaFoldDB; P58577; -.
DR   SMR; P58577; -.
DR   STRING; 103690.17135085; -.
DR   EnsemblBacteria; BAB77631; BAB77631; BAB77631.
DR   KEGG; ana:all0107; -.
DR   eggNOG; ENOG502ZMJ2; Bacteria.
DR   OMA; GPFTICG; -.
DR   OrthoDB; 1791383at2; -.
DR   Proteomes; UP000002483; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009538; C:photosystem I reaction center; IEA:InterPro.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.20.1240.10; -; 1.
DR   HAMAP; MF_00447; PSI_PsaL; 1.
DR   InterPro; IPR003757; PSI_PsaL.
DR   InterPro; IPR036592; PSI_PsaL_sf.
DR   InterPro; IPR022980; PSI_suXI.
DR   PANTHER; PTHR34803; PTHR34803; 1.
DR   Pfam; PF02605; PsaL; 1.
DR   SUPFAM; SSF81568; SSF81568; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Direct protein sequencing; Membrane; Photosynthesis;
KW   Photosystem I; Reference proteome; Thylakoid; Transmembrane;
KW   Transmembrane helix.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:24550276"
FT   CHAIN           2..172
FT                   /note="Photosystem I reaction center subunit XI"
FT                   /id="PRO_0000194694"
FT   TRANSMEM        92..112
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        142..162
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   REGION          1..24
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   HELIX           24..26
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           36..39
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           41..49
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   TURN            51..53
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           59..81
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   TURN            83..86
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           90..113
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           131..134
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           136..162
FT                   /evidence="ECO:0007829|PDB:6K61"
FT   HELIX           164..170
FT                   /evidence="ECO:0007829|PDB:6K61"
SQ   SEQUENCE   172 AA;  18119 MW;  B483CD37C9A43A8D CRC64;
     MAQAVDASKN LPSDPRNREV VFPAGRDPQW GNLETPVNAS PLVKWFINNL PAYRPGLTPF
     RRGLEVGMAH GYFLFGPFAK LGPLRDAANA NLAGLLGAIG LVVLFTLALS LYANSNPPTA
     LASVTVPNPP DAFQSKEGWN NFASAFLIGG IGGAVVAYFL TSNLALIQGL VG