ID   CEMA_PSINU              Reviewed;         449 AA.
AC   Q8WI08;
DT   06-DEC-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   25-MAY-2022, entry version 57.
DE   RecName: Full=Chloroplast envelope membrane protein;
GN   Name=cemA {ECO:0000255|HAMAP-Rule:MF_01308};
OS   Psilotum nudum (Whisk fern) (Lycopodium nudum).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Polypodiopsida; Ophioglossidae; Psilotales; Psilotaceae; Psilotum.
OX   NCBI_TaxID=3240;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Kingyoku;
RX   PubMed=15240838; DOI=10.1093/molbev/msh203;
RA   Nishiyama T., Wolf P.G., Kugita M., Sinclair R.B., Sugita M., Sugiura C.,
RA   Wakasugi T., Yamada K., Yoshinaga K., Yamaguchi K., Ueda K., Hasebe M.;
RT   "Chloroplast phylogeny indicates that bryophytes are monophyletic.";
RL   Mol. Biol. Evol. 21:1813-1819(2004).
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; AP004638; BAB84228.1; -; Genomic_DNA.
DR   RefSeq; NP_569641.1; NC_003386.1.
DR   AlphaFoldDB; Q8WI08; -.
DR   GeneID; 2545231; -.
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..449
FT                   /note="Chloroplast envelope membrane protein"
FT                   /id="PRO_0000216659"
FT   TRANSMEM        10..29
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        228..247
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        324..346
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        371..393
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
FT   TRANSMEM        408..430
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01308"
SQ   SEQUENCE   449 AA;  53456 MW;  642BBECE9953B8CC CRC64;
     MNMELNNSVF LIYWSLLECK FSIFVLNFWN RWKHILLYKF SSPISIYNHL SSRSKNRISS
     REYFFNMNIR DPILNTYFYL SFLFERIGLK KDEDVGKLKR NRIFDIFDER SKENRLVYAV
     KYMSKKSNNR EKMNRRLAWI ETTLNDLRIC KKYFYNFPFS VEIKDRLDEE LSISKSIELT
     VPTTIAYESI NIVPRSITRT LSRFKAELIG QSSSLVLHEF KLAKYQALAS LRYMGCLLFL
     PFFISSISKK WVLEPRIKDW WNTSQFQIFI NHLQEKKALK RLQDVEELLW LDRIILEEDH
     SKDLSIKIRE KTVQLVAIYN EDSIQIILNL LTDIISFTIL SVLVIIGKKR LAVSNSWIQE
     LFHSLSDTMK AFFILLLTDL FIGFHSPHGW EIIIGSILEH IGFAYDKYTI SYFVSTFPVI
     LDTVFKYWIF RHLNRLSPSI VATYHTMNE