ID   CEMA_MESVI              Reviewed;         236 AA.
AC   Q9MUN7;
DT   01-JUN-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2001, sequence version 2.
DT   03-AUG-2022, entry version 64.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Mesostigma viride (Green alga).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Mesostigmatophyceae;
OC   Mesostigmatales; Mesostigmataceae; Mesostigma.
OX   NCBI_TaxID=41882;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-296 / KY-14 / CCMP 2046;
RX   PubMed=10688199; DOI=10.1038/35001059;
RA   Lemieux C., Otis C., Turmel M.;
RT   "Ancestral chloroplast genome in Mesostigma viride reveals an early branch
RT   of green plant evolution.";
RL   Nature 403:649-652(2000).
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAF43863.1; Type=Frameshift; Evidence={ECO:0000305};
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DR   EMBL; AF166114; AAF43863.1; ALT_FRAME; Genomic_DNA.
DR   RefSeq; NP_038423.2; NC_002186.1.
DR   AlphaFoldDB; Q9MUN7; -.
DR   PRIDE; Q9MUN7; -.
DR   GeneID; 800996; -.
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..236
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000216648"
FT   TRANSMEM        13..35
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        112..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        159..181
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        196..218
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
SQ   SEQUENCE   236 AA;  27957 MW;  C8A76014DF98DC1E CRC64;
     MINNQESLRS QTFFCIKYII SLSFFFILIY QLLNFLVLRP YAEYLWNHYQ TDVFLNSSQE
     ERIFAKLQNF EEEMQFDMLI SYTYPLNPQV LHKEMEEKAF ELAHMSNNES INSIAHVFTD
     LLIAFLIFCL LINAKKEIAI IQTYIDQYIY SLTDAKKSFF LILFTDIFVG FHSSHGWKIL
     IELCLTHLGL PENKGFIFLF VATFPVILDT LFKYWIFLYL NRISPSAVAT FNNMNE