ID   CEMA_NEPOL              Reviewed;         392 AA.
AC   Q9TKZ2;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   03-AUG-2022, entry version 65.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Nephroselmis olivacea (Green alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Chlorophyta; Nephroselmidophyceae;
OC   Nephroselmidales; Nephroselmidaceae; Nephroselmis.
OX   NCBI_TaxID=31312;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-484 / S-N-5-8;
RX   PubMed=10468594; DOI=10.1073/pnas.96.18.10248;
RA   Turmel M., Otis C., Lemieux C.;
RT   "The complete chloroplast DNA sequence of the green alga Nephroselmis
RT   olivacea: insights into the architecture of ancestral chloroplast
RT   genomes.";
RL   Proc. Natl. Acad. Sci. U.S.A. 96:10248-10253(1999).
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; AF137379; AAD54824.1; -; Genomic_DNA.
DR   RefSeq; NP_050853.1; NC_000927.1.
DR   AlphaFoldDB; Q9TKZ2; -.
DR   SMR; Q9TKZ2; -.
DR   GeneID; 801919; -.
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; 1.
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..392
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000216649"
FT   TRANSMEM        172..194
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        267..289
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        315..337
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        352..373
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
SQ   SEQUENCE   392 AA;  45538 MW;  D7C9E74A56FE88E8 CRC64;
     MLAQSIRDCI LWIRKTPDRA LRAAKEAADL YQNIQQESRI YQNLRGANDA TVILYLDKEL
     SQYERTVKLR LQEFRVSSAL LRGFEASQTE SAETKKMVEE IEMAISRSQF LRSILSASSV
     KTHKPLAFEK TGIIPRSIPR TFDRLRRELL ASSEDLVVQE FRISRYQTLT SLKFLASLIW
     IPWIVSWFLR VWWLEPTITM FWNQDQTQLF LHRSQEERAL SDMRAFQEKV YFEVLVGEAP
     DPTPEVLQRR IQAKARDLAE ASNQNSIESL ANLGSDILAC LILLAMLSLE KTKIAVLKSF
     LDELIYSLND ATKAFFLILV TDVFVGFHST HGWEVILELL FAHFGFPESK KFIFMFVATF
     PVLLDTVFKY WIFRYLNHIS PSTVAVYHNM NE