ID   CEMA_ATRBE              Reviewed;         229 AA.
AC   Q8S8W5;
DT   06-DEC-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2002, sequence version 1.
DT   25-MAY-2022, entry version 55.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Atropa belladonna (Belladonna) (Deadly nightshade).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Solanoideae; Hyoscyameae; Atropa.
OX   NCBI_TaxID=33113;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Ab5p(kan);
RX   PubMed=12200487; DOI=10.1093/oxfordjournals.molbev.a004222;
RA   Schmitz-Linneweber C., Regel R., Du T.G., Hupfer H., Herrmann R.G.,
RA   Maier R.M.;
RT   "The plastid chromosome of Atropa belladonna and its comparison with that
RT   of Nicotiana tabacum: the role of RNA editing in generating divergence in
RT   the process of plant speciation.";
RL   Mol. Biol. Evol. 19:1602-1612(2002).
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; AJ316582; CAC88056.1; -; Genomic_DNA.
DR   RefSeq; NP_783244.1; NC_004561.1.
DR   AlphaFoldDB; Q8S8W5; -.
DR   GeneID; 806464; -.
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..229
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000216634"
FT   TRANSMEM        10..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        107..126
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        188..210
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
SQ   SEQUENCE   229 AA;  26794 MW;  195A74B709945FB0 CRC64;
     MAKKKAFTPL FYLASIVFLP WWISFSVNKC LESWVTNWWN TGQSEIFLNN IQEKSLLEKF
     IELEELLLLD EMIKEYSETH LEEFGIGIHK ETIQLIKIQN ENRIHTILHF STNIICFIIL
     SGYSILGNEK LVILNSWAQE FLYNLSDTVK AFSILLLTDL CIGFHSPHGW ELMIGSIYKD
     FGFVHNDQII SGLVSTFPVI LDTIFKYWIF RYLNRLSPSL VVIYHSMND