ID   ACEA_HELAN              Reviewed;          58 AA.
AC   P20699;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   02-SEP-2026, entry version 99.
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};
DE   Flags: Fragment;
OS   Helianthus annuus (Common sunflower).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; campanulids; Asterales; Asteraceae; Asteroideae;
OC   Heliantheae alliance; Heliantheae; Helianthus.
OX   NCBI_TaxID=4232;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=cv. Giant grey stripe; TISSUE=Seedling;
RX   PubMed=16665941; DOI=10.1104/pp.86.2.527;
RA   Allen R.D., Trelease R.N., Thomas T.L.;
RT   "Regulation of isocitrate lyase gene expression in sunflower.";
RL   Plant Physiol. 86:527-532(1988).
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; L37751; AAA56819.1; -; mRNA.
DR   PIR; JA0155; JA0155.
DR   AlphaFoldDB; P20699; -.
DR   SMR; P20699; -.
DR   UniPathway; UPA00703; UER00719.
DR   GO; GO:0009514; C:glyoxysome; ISS:UniProtKB.
DR   GO; GO:0004451; F:isocitrate lyase activity; ISS:UniProtKB.
DR   GO; GO:0006097; P:glyoxylate cycle; IEA:UniProtKB-UniPathway.
DR   Gene3D; 3.20.20.60; Phosphoenolpyruvate-binding domains; 1.
DR   InterPro; IPR006254; Isocitrate_lyase.
DR   InterPro; IPR015813; Pyrv/PenolPyrv_kinase-like_dom.
DR   InterPro; IPR040442; Pyrv_kinase-like_dom_sf.
DR   PANTHER; PTHR21631:SF3; BIFUNCTIONAL GLYOXYLATE CYCLE PROTEIN; 1.
DR   PANTHER; PTHR21631; ISOCITRATE LYASE/MALATE SYNTHASE; 1.
DR   Pfam; PF00463; ICL; 1.
DR   SUPFAM; SSF51621; Phosphoenolpyruvate/pyruvate domain; 1.
PE   2: Evidence at transcript level;
KW   Glyoxylate bypass; Glyoxysome; Lyase; Peroxisome.
FT   CHAIN           <1..>58
FT                   /note="Isocitrate lyase"
FT                   /id="PRO_0000068807"
FT   NON_TER         1
FT   NON_TER         58
SQ   SEQUENCE   58 AA;  6513 MW;  EFB03982D8B1089A CRC64;
     TRGMLAYVEK IQREERKHGV DTLAHQKWSG ANYYDRVLRT VQGGMTSTAA MGKGVTEE
//