ID   ACEA_RICCO              Reviewed;         576 AA.
AC   P15479;
DT   01-APR-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-APR-1990, sequence version 1.
DT   03-AUG-2022, entry version 117.
DE   RecName: Full=Isocitrate lyase {ECO:0000250|UniProtKB:P28297};
DE            Short=ICL {ECO:0000250|UniProtKB:P28297};
DE            EC=4.1.3.1 {ECO:0000250|UniProtKB:P28297};
DE   AltName: Full=Isocitrase {ECO:0000250|UniProtKB:P28297};
DE   AltName: Full=Isocitratsysase {ECO:0000250|UniProtKB:P28297};
OS   Ricinus communis (Castor bean).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Malpighiales; Euphorbiaceae; Acalyphoideae; Acalypheae;
OC   Ricinus.
OX   NCBI_TaxID=3988;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RX   AGRICOLA=IND91035316; DOI=10.1007/BF00017992;
RA   Beeching J.R., Northcote D.H.;
RT   "Nucleic acid (cDNA) and amino acid sequences of isocitrate lyase from
RT   castor bean.";
RL   Plant Mol. Biol. 8:471-475(1987).
CC   -!- FUNCTION: Involved in storage lipid mobilization during the growth of
CC       higher plant seedling. {ECO:0000250|UniProtKB:P28297}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=D-threo-isocitrate = glyoxylate + succinate;
CC         Xref=Rhea:RHEA:13245, ChEBI:CHEBI:15562, ChEBI:CHEBI:30031,
CC         ChEBI:CHEBI:36655; EC=4.1.3.1;
CC         Evidence={ECO:0000250|UniProtKB:P28297};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000250|UniProtKB:P9WKK7};
CC   -!- PATHWAY: Carbohydrate metabolism; glyoxylate cycle; (S)-malate from
CC       isocitrate: step 1/2. {ECO:0000250|UniProtKB:P28297}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000250|UniProtKB:P28297}.
CC   -!- SUBCELLULAR LOCATION: Glyoxysome {ECO:0000250|UniProtKB:P28297}.
CC   -!- SIMILARITY: Belongs to the isocitrate lyase/PEP mutase superfamily.
CC       Isocitrate lyase family. {ECO:0000305}.
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DR   EMBL; M17145; AAA53378.1; -; mRNA.
DR   PIR; S06274; WZCSI.
DR   RefSeq; NP_001310641.1; NM_001323712.1.
DR   AlphaFoldDB; P15479; -.
DR   SMR; P15479; -.
DR   STRING; 3988.XP_002529741.1; -.
DR   GeneID; 8264280; -.
DR   KEGG; rcu:8264280; -.
DR   eggNOG; KOG1260; Eukaryota.
DR   UniPathway; UPA00703; UER00719.
DR   GO; GO:0009514; C:glyoxysome; IEA:UniProtKB-SubCell.
DR   GO; GO:0004451; F:isocitrate lyase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006097; P:glyoxylate cycle; IEA:UniProtKB-UniPathway.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-KW.
DR   CDD; cd00377; ICL_PEPM; 1.
DR   Gene3D; 3.20.20.60; -; 1.
DR   InterPro; IPR039556; ICL/PEPM.
DR   InterPro; IPR006254; Isocitrate_lyase.
DR   InterPro; IPR018523; Isocitrate_lyase_ph_CS.
DR   InterPro; IPR015813; Pyrv/PenolPyrv_Kinase-like_dom.
DR   InterPro; IPR040442; Pyrv_Kinase-like_dom_sf.
DR   PANTHER; PTHR21631; PTHR21631; 1.
DR   Pfam; PF00463; ICL; 1.
DR   PIRSF; PIRSF001362; Isocit_lyase; 1.
DR   SUPFAM; SSF51621; SSF51621; 1.
DR   TIGRFAMs; TIGR01346; isocit_lyase; 1.
DR   PROSITE; PS00161; ISOCITRATE_LYASE; 1.
PE   2: Evidence at transcript level;
KW   Glyoxylate bypass; Glyoxysome; Lyase; Magnesium; Metal-binding; Peroxisome;
KW   Tricarboxylic acid cycle.
FT   CHAIN           1..576
FT                   /note="Isocitrate lyase"
FT                   /id="PRO_0000068810"
FT   MOTIF           574..576
FT                   /note="Microbody targeting signal"
FT                   /evidence="ECO:0000255"
FT   ACT_SITE        213
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         104..106
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         175
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         214..215
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         250
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         437..441
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
FT   BINDING         472
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250|UniProtKB:P9WKK7"
SQ   SEQUENCE   576 AA;  64752 MW;  8177A7679050579B CRC64;
     MAASFSGPSM IMEEEGRFEA EVAEVQAWWN SERFKLTRRP YTARDVVALR GNLKQSYASN
     ELAKKLWRTL KTHQANGTAS RTFGALDPVQ VTMMAKHLDS IYVSGWQCSS THTTTNEPGP
     DLADYPYDTV PNKVEHLFFA QQYHDRKQRE ARMSMSREER ARTPYVDYLK PIIADGDTGF
     GGTTATVKLC KLFVERGAAG VHIEDQSSVT KKCGHMAGKV LVAISEHINR LVAARLQFDV
     MGVETLLVAR TDAEAANLIQ SNVDTRDHQF ILGVTNPNLR GKSLATLLAT GMANGKTGAE
     LQATEDNWLA MAQLKTFPEC VMDAIKNMNA GEDEKRRRMN EWMNHTSYDK CLSYEQGREI
     ADRMGLKNLF WDWDLPRTRE GFYRFKGSVM AAVVRGRAFA PHADIIWMET AKPDFAECTA
     FAEGVKSMHP EIMLAYNLSP SFNWDASGMT DEQMRDFIPR IARLGFCWQF ITLGGFHADA
     LVIDTFAKDY ARRGMLAYVE RIQREERKNG VDTLAHQKWS GANYYDRYLK TVQGGISSTA
     AMGKGVTEEQ FKETWTRPGA MEMGSAGSEV VAKARM