ID   CLSA_BUCAP              Reviewed;         486 AA.
AC   Q8K9P9;
DT   08-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 113.
DE   RecName: Full=Cardiolipin synthase A {ECO:0000255|HAMAP-Rule:MF_00190};
DE            Short=CL synthase {ECO:0000255|HAMAP-Rule:MF_00190};
DE            EC=2.7.8.- {ECO:0000255|HAMAP-Rule:MF_00190};
GN   Name=clsA {ECO:0000255|HAMAP-Rule:MF_00190}; Synonyms=cls;
GN   OrderedLocusNames=BUsg_262;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- FUNCTION: Catalyzes the reversible phosphatidyl group transfer from one
CC       phosphatidylglycerol molecule to another to form cardiolipin (CL)
CC       (diphosphatidylglycerol) and glycerol. {ECO:0000255|HAMAP-
CC       Rule:MF_00190}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol) = a
CC         cardiolipin + glycerol; Xref=Rhea:RHEA:31451, ChEBI:CHEBI:17754,
CC         ChEBI:CHEBI:62237, ChEBI:CHEBI:64716; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00190};
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC       Rule:MF_00190}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC       Rule:MF_00190}.
CC   -!- SIMILARITY: Belongs to the phospholipase D family. Cardiolipin synthase
CC       subfamily. ClsA sub-subfamily. {ECO:0000255|HAMAP-Rule:MF_00190}.
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DR   EMBL; AE013218; AAM67820.1; -; Genomic_DNA.
DR   RefSeq; WP_011053787.1; NC_004061.1.
DR   AlphaFoldDB; Q8K9P9; -.
DR   SMR; Q8K9P9; -.
DR   STRING; 198804.BUsg_262; -.
DR   EnsemblBacteria; AAM67820; AAM67820; BUsg_262.
DR   KEGG; bas:BUsg_262; -.
DR   eggNOG; COG1502; Bacteria.
DR   HOGENOM; CLU_038053_1_0_6; -.
DR   OMA; TRFILDW; -.
DR   OrthoDB; 1881748at2; -.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0008808; F:cardiolipin synthase activity; IEA:InterPro.
DR   GO; GO:0032049; P:cardiolipin biosynthetic process; IEA:InterPro.
DR   HAMAP; MF_00190; Cardiolipin_synth_ClsA; 1.
DR   InterPro; IPR022924; Cardiolipin_synthase.
DR   InterPro; IPR030840; CL_synthase_A.
DR   InterPro; IPR025202; PLD-like_dom.
DR   InterPro; IPR001736; PLipase_D/transphosphatidylase.
DR   Pfam; PF13091; PLDc_2; 2.
DR   SMART; SM00155; PLDc; 2.
DR   TIGRFAMs; TIGR04265; bac_cardiolipin; 1.
DR   PROSITE; PS50035; PLD; 2.
PE   3: Inferred from homology;
KW   Cell inner membrane; Cell membrane; Lipid biosynthesis; Lipid metabolism;
KW   Membrane; Phospholipid biosynthesis; Phospholipid metabolism; Repeat;
KW   Transferase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..486
FT                   /note="Cardiolipin synthase A"
FT                   /id="PRO_0000201250"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   TRANSMEM        38..58
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   DOMAIN          219..246
FT                   /note="PLD phosphodiesterase 1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   DOMAIN          399..426
FT                   /note="PLD phosphodiesterase 2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        224
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        226
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        231
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        404
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        406
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
FT   ACT_SITE        411
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00190"
SQ   SEQUENCE   486 AA;  56293 MW;  91185D4BC1992F9A CRC64;
     MDIFYDLIKW LVVLIYWLLI ANITYRILIK RRSIPSSMSW LLTIYIIPFI GIAIWFFFGE
     LYLGKRQKKI AKKIWSISNT YLNKLKSYKY IFQIKNSEVA TSLFQLCKHR QGIYGIKNNK
     ITLLTNTQNT IEVLIRDIYS ARNNIEMVFY IWKPGGIADD VAMALIDSAK RGVHCRLMLD
     SAGSVEFFRS PWFDIMKKSG IEIVEALKVS LIRIFLRRLD VRQHRKIILI DNYISYSGSM
     NLVDPYLFKQ SSGVGQWIDL MTRIEGPVAT AIGIIYSCDW EIETGFKILP KLPNKEMLKK
     KCNQNSSIQV IASGPGFPKN VIHQALLTAI YSARNELIMT TPYLVPSDDL LHAICTAAQR
     GVKVSIIIPL YHDSILVKWA SRVFFSELLE AGVKIYQFKK GLLHSKSILI DQQLSLIGTV
     NLDMRSLWLN FEITLVIDDR KFSHHLSAIQ KEYIDNSRLL DKNTWSMRAY WTRILEKIFY
     FLSPLL