ID   CEMA_STAPU              Reviewed;         582 AA.
AC   Q32RT2;
DT   10-JUL-2007, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   25-MAY-2022, entry version 45.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Staurastrum punctulatum (Green alga) (Cosmoastrum punctulatum).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Zygnemophyceae; Zygnematophycidae;
OC   Desmidiales; Desmidiaceae; Staurastrum.
OX   NCBI_TaxID=102822;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16236178; DOI=10.1186/1741-7007-3-22;
RA   Turmel M., Otis C., Lemieux C.;
RT   "The complete chloroplast DNA sequences of the charophycean green algae
RT   Staurastrum and Zygnema reveal that the chloroplast genome underwent
RT   extensive changes during the evolution of the Zygnematales.";
RL   BMC Biol. 3:22-22(2005).
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; AY958085; AAX45689.1; -; Genomic_DNA.
DR   RefSeq; YP_636444.1; NC_008116.1.
DR   AlphaFoldDB; Q32RT2; -.
DR   SMR; Q32RT2; -.
DR   PRIDE; Q32RT2; -.
DR   GeneID; 4108647; -.
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..582
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000293534"
FT   TRANSMEM        364..384
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        460..480
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        507..527
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        543..563
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   REGION          183..316
FT                   /note="Insert"
FT   REGION          284..307
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        285..300
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   582 AA;  67890 MW;  8868A9FA0A1F119C CRC64;
     MLMKAHDSKF YRWLFSTPYR ALHRAYEASK KVRNIQRDYL FYKNAVGDSS KRSFYNVTLY
     IDSILNQSAS NIFWSLLEFK ISINLCNFIV SLRDPHIDNE KSDFIFESFN KSTKENLENL
     VDLQKDKNLL SNERKNVISL NSYTRSFKQK IGNYINLLIG WKPKNEVNYL TENLSFTSSI
     EENCFFLKKF YNKTLDWERW NRKLTWIEAV LIDLELLKNK GWFSSEALSE QRNPQPFPNF
     NTSYKTVSLS GPFVERSKKM QKIGSRSKLN QNFSPYIDPG AGTYGSTTKE GSSGANSRKG
     NPFGRSVRGT EKVKDTAYES LGLVPRSITR TLSRFQTELA GRSASLVLPE FRLAKYQAIT
     SIKYLAFLIF CPWLVLTVCK ILFLEPLIEN WWNTAQFQIF LSFSQEEKAL KRLQQVEELL
     WLDIIMADSS AKQPQDLSAQ IHQRTIDLVE TYNQESIQTI LHFFTNFLFI FVVISLLIWG
     KKRLAILNSW VQEVFYSLSD TMKAFFILLF TDLCIGFHSP HGWEILIGFI LEHLGFSHNK
     HVISCFVSTF PVILDTVFKY WIFRHLNRIS PSIVVSYHTM NE