ID   CEMA_OLTVI              Reviewed;         352 AA.
AC   Q20EU1;
DT   10-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   18-APR-2006, sequence version 1.
DT   25-MAY-2022, entry version 40.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Oltmannsiellopsis viridis (Marine flagellate) (Oltmannsiella viridis).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Chlorophyta; Ulvophyceae; Oltmannsiellopsidales;
OC   Oltmannsiellopsidaceae; Oltmannsiellopsis.
OX   NCBI_TaxID=51324;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16472375; DOI=10.1186/1741-7007-4-3;
RA   Pombert J.-F., Lemieux C., Turmel M.;
RT   "The complete chloroplast DNA sequence of the green alga Oltmannsiellopsis
RT   viridis reveals a distinctive quadripartite architecture in the chloroplast
RT   genome of early diverging ulvophytes.";
RL   BMC Biol. 4:3-3(2006).
CC   -!- FUNCTION: May be involved in proton extrusion. Indirectly promotes
CC       efficient inorganic carbon uptake into chloroplasts.
CC       {ECO:0000255|HAMAP-Rule:MF_01308}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast inner membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01308}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01308}.
CC   -!- SIMILARITY: Belongs to the Cema family. {ECO:0000305}.
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DR   EMBL; DQ291132; ABB81972.1; -; Genomic_DNA.
DR   RefSeq; YP_635904.1; NC_008099.1.
DR   AlphaFoldDB; Q20EU1; -.
DR   GeneID; 4100090; -.
DR   GO; GO:0009706; C:chloroplast inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0015078; F:proton transmembrane transporter activity; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_01308; CemA; 1.
DR   InterPro; IPR004282; CemA.
DR   PANTHER; PTHR33650; PTHR33650; 1.
DR   Pfam; PF03040; CemA; 2.
PE   3: Inferred from homology;
KW   Chloroplast; Hydrogen ion transport; Ion transport; Membrane; Plastid;
KW   Plastid inner membrane; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..352
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000293525"
FT   TRANSMEM        52..72
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        227..247
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        312..332
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
SQ   SEQUENCE   352 AA;  40050 MW;  125AEBC45DC9F807 CRC64;
     MDSESQLLEG AVEKIGLIPR SIIRTINRFQ QQLFPDAVEY FIQEFRVSRS QVLVSLQCLL
     TLIIIPLFIH FFAKTVFLTP CIEYVWNTYK TDIFLNSYQQ EQALTEMRNF EEILYFDLLV
     QSNEEPVTQE GLPFTFLQHS QGSVDEEKTT APITAYAVSN MGNPETATIA PQHLHGSVGG
     KLESEFRFTN PSFVGKNNVT GATTITAAIP LQKKLVDLAQ SANKQSIAAL TNLFADLLTL
     FSLIILFIRL KSQIIILKSF LIETFYSLND TTKSFMLIFS TDLLVGFHSP RGWEIFLDFI
     LSRFGLPHDE NIILLFVATF PVLLDSVIKY WIFRYLNKIS PSTVATYHAM IE