ID   SECY_TRICV              Reviewed;         425 AA.
AC   P49461;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   25-MAY-2022, entry version 83.
DE   RecName: Full=Protein translocase subunit SecY {ECO:0000255|HAMAP-Rule:MF_01465};
GN   Name=secY {ECO:0000255|HAMAP-Rule:MF_01465};
OS   Trieres chinensis (Marine centric diatom) (Odontella sinensis).
OG   Plastid; Chloroplast.
OC   Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta; Mediophyceae;
OC   Biddulphiophycidae; Eupodiscales; Parodontellaceae; Trieres.
OX   NCBI_TaxID=1514140;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Kowallik K.V., Stoebe B., Schaffran I., Kroth-Pancic P., Freier U.;
RT   "The chloroplast genome of a chlorophyll a+c-containing alga, Odontella
RT   sinensis.";
RL   Plant Mol. Biol. Rep. 13:336-342(1995).
CC   -!- FUNCTION: The central subunit of the protein translocation channel
CC       SecYE. Consists of two halves formed by TMs 1-5 and 6-10. These two
CC       domains form a lateral gate at the front which open onto the bilayer
CC       between TMs 2 and 7, and are clamped together by SecE at the back. The
CC       channel is closed by both a pore ring composed of hydrophobic SecY
CC       resides and a short helix (helix 2A) on the extracellular side of the
CC       membrane which forms a plug. {ECO:0000255|HAMAP-Rule:MF_01465}.
CC   -!- SUBUNIT: Component of the plastid Sec protein translocase complex,
CC       which is composed of at least SecY, SecE and SecG. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01465}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01465}.
CC   -!- SIMILARITY: Belongs to the SecY/SEC61-alpha family. {ECO:0000255|HAMAP-
CC       Rule:MF_01465}.
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DR   EMBL; Z67753; CAA91631.1; -; Genomic_DNA.
DR   PIR; S78258; S78258.
DR   AlphaFoldDB; P49461; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0065002; P:intracellular protein transmembrane transport; IEA:UniProtKB-UniRule.
DR   GO; GO:0006605; P:protein targeting; IEA:UniProtKB-UniRule.
DR   Gene3D; 1.10.3370.10; -; 1.
DR   HAMAP; MF_01465; SecY; 1.
DR   InterPro; IPR026593; SecY.
DR   InterPro; IPR002208; SecY/SEC61-alpha.
DR   InterPro; IPR030659; SecY_CS.
DR   InterPro; IPR023201; SecY_dom_sf.
DR   PANTHER; PTHR10906; PTHR10906; 1.
DR   Pfam; PF00344; SecY; 1.
DR   PIRSF; PIRSF004557; SecY; 1.
DR   SUPFAM; SSF103491; SSF103491; 1.
DR   TIGRFAMs; TIGR00967; 3a0501s007; 1.
DR   PROSITE; PS00755; SECY_1; 1.
DR   PROSITE; PS00756; SECY_2; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Membrane; Plastid; Protein transport; Thylakoid;
KW   Translocation; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..425
FT                   /note="Protein translocase subunit SecY"
FT                   /id="PRO_0000131776"
FT   TRANSMEM        15..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        62..82
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        113..131
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        139..159
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        168..188
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        201..221
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        266..286
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        304..324
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        364..384
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
FT   TRANSMEM        385..405
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01465"
SQ   SEQUENCE   425 AA;  47396 MW;  992890526CE585CB CRC64;
     MKQTDDKDSL LNRLLLSLGI LLFIRMGTFL PVPGIDHGHL EFYIERHFRL RTLVSTFAGD
     NTVVVGLFTL NIFPYINASI IMQLLVSLLP GLSKLQKEGG AEARRSINSL TRLLTLGWSL
     IQSTSVAFYL KRALFEWNLV LAFEIVIWLT TGAMIVLWLS EIITEYGLGN GPSLLIYTNI
     VSSLPGFVKQ VITESSGKVP IGSWLLSGFV LFVALYGIVL LQEGMRKVYL ISSKQLNQTS
     LPFSGSSNLE SGYYIPLRFN QAGVMPIILT TAVLVIPTFI YNLGLLRILT PLITLPVFVK
     SYKIIYWVSY FVLILLFSLF YSTIVVNPKD LSDELQKMAV SIPGIRPGVE TTFYLKQVMK
     RVTLLGAIML ALLATLPNII QAILSLSGFT NLGTTSLLIL VGVILDLTRE MRSIILSNIY
     YDMFD