ID   CEMA_CUCSA              Reviewed;         229 AA.
AC   Q2QD77; A5J1U6; Q4VZI0;
DT   06-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   25-MAY-2022, entry version 48.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308}; OrderedLocusNames=CsCp052;
OS   Cucumis sativus (Cucumber).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Cucurbitales; Cucurbitaceae; Benincaseae; Cucumis.
OX   NCBI_TaxID=3659;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Baekmibaekdadagi;
RX   PubMed=16362300; DOI=10.1007/s00299-005-0097-y;
RA   Kim J.-S., Jung J.D., Lee J.-A., Park H.-W., Oh K.-H., Jeong W.J.,
RA   Choi D.-W., Liu J.R., Cho K.Y.;
RT   "Complete sequence and organization of the cucumber (Cucumis sativus L. cv.
RT   Baekmibaekdadagi) chloroplast genome.";
RL   Plant Cell Rep. 25:334-340(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Borszczagowski;
RX   PubMed=17607527; DOI=10.2478/s11658-007-0029-7;
RA   Plader W.W., Yukawa Y., Sugiura M., Malepszy S.;
RT   "The complete structure of the cucumber (Cucumis sativus L.) chloroplast
RT   genome: its composition and comparative analysis.";
RL   Cell. Mol. Biol. Lett. 12:584-594(2007).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Chipper, and cv. Gy14;
RX   PubMed=17546086; DOI=10.1139/g07-003;
RA   Chung S.-M., Gordon V.S., Staub J.E.;
RT   "Sequencing cucumber (Cucumis sativus L.) chloroplast genomes identifies
RT   differences between chilling-tolerant and -susceptible cucumber lines.";
RL   Genome 50:215-225(2007).
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; DQ119058; AAZ94663.1; -; Genomic_DNA.
DR   EMBL; AJ970307; CAJ00770.1; -; Genomic_DNA.
DR   EMBL; DQ865975; ABI97429.1; -; Genomic_DNA.
DR   EMBL; DQ865976; ABI98757.1; -; Genomic_DNA.
DR   RefSeq; YP_247611.1; NC_007144.1.
DR   AlphaFoldDB; Q2QD77; -.
DR   GeneID; 3429357; -.
DR   KEGG; csv:3429357; -.
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_0000275234"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        114..134
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        141..163
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        189..209
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   CONFLICT        221
FT                   /note="V -> G (in Ref. 2; CAJ00770)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   229 AA;  26881 MW;  69AC3D46CB94AA7A CRC64;
     MEKKKAFIPL LYLASIVFLP WWISLSFNKS LESWVTNWWN TGQSENFLND IQEKSIIKKV
     LELEELFLLD EMLKEYPETH LQKLRIAISK ETIQLIKMHN EDRIHTILHF STNIICFVIL
     SGYSILGNEE LVILNSWVQE FLYNLSDTIK AFSILLLTDL CIGFHSPHGW ELMIGSVYKD
     FGFSHNDQII SSLVSTFPVI LDTIFKYWIF RYLNRVSPSL VVIYHSLND