ID J4KSK2_9GAMM Unreviewed; 293 AA.
AC J4KSK2;
DT 31-OCT-2012, integrated into UniProtKB/TrEMBL.
DT 31-OCT-2012, sequence version 1.
DT 13-SEP-2023, entry version 43.
DE RecName: Full=2-methylisocitrate lyase {ECO:0000256|HAMAP-Rule:MF_01939};
DE Short=2-MIC {ECO:0000256|HAMAP-Rule:MF_01939};
DE Short=MICL {ECO:0000256|HAMAP-Rule:MF_01939};
DE EC=4.1.3.30 {ECO:0000256|HAMAP-Rule:MF_01939};
DE AltName: Full=(2R,3S)-2-methylisocitrate lyase {ECO:0000256|HAMAP-Rule:MF_01939};
GN Name=prpB {ECO:0000256|HAMAP-Rule:MF_01939,
GN ECO:0000313|EMBL:EJP72849.1};
GN ORFNames=NT02SARS_0789 {ECO:0000313|EMBL:EJP72849.1};
OS SAR86 cluster bacterium SAR86B.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; SAR86 cluster.
OX NCBI_TaxID=1123867 {ECO:0000313|EMBL:EJP72849.1, ECO:0000313|Proteomes:UP000010116};
RN [1] {ECO:0000313|EMBL:EJP72849.1, ECO:0000313|Proteomes:UP000010116}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=22170421; DOI=10.1038/ismej.2011.189;
RA Dupont C.L., Rusch D.B., Yooseph S., Lombardo M.J., Richter R.A., Valas R.,
RA Novotny M., Yee-Greenbaum J., Selengut J.D., Haft D.H., Halpern A.L.,
RA Lasken R.S., Nealson K., Friedman R., Venter J.C.;
RT "Genomic insights to SAR86, an abundant and uncultivated marine bacterial
RT lineage.";
RL ISME J. 6:1186-1199(2012).
CC -!- FUNCTION: Catalyzes the thermodynamically favored C-C bond cleavage of
CC (2R,3S)-2-methylisocitrate to yield pyruvate and succinate.
CC {ECO:0000256|RuleBase:RU361121}.
CC -!- FUNCTION: Involved in the catabolism of short chain fatty acids (SCFA)
CC via the 2-methylcitrate cycle (propionate degradation route). Catalyzes
CC the thermodynamically favored C-C bond cleavage of (2R,3S)-2-
CC methylisocitrate to yield pyruvate and succinate via an alpha-carboxy-
CC carbanion intermediate. {ECO:0000256|HAMAP-Rule:MF_01939}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(2S,3R)-3-hydroxybutane-1,2,3-tricarboxylate = pyruvate +
CC succinate; Xref=Rhea:RHEA:16809, ChEBI:CHEBI:15361,
CC ChEBI:CHEBI:30031, ChEBI:CHEBI:57429; EC=4.1.3.30;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01939,
CC ECO:0000256|RuleBase:RU361121};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|ARBA:ARBA00001946,
CC ECO:0000256|HAMAP-Rule:MF_01939};
CC -!- PATHWAY: Organic acid metabolism; propanoate degradation.
CC {ECO:0000256|HAMAP-Rule:MF_01939, ECO:0000256|RuleBase:RU361121}.
CC -!- SUBUNIT: Homotetramer; dimer of dimers. {ECO:0000256|HAMAP-
CC Rule:MF_01939}.
CC -!- SIMILARITY: Belongs to the isocitrate lyase/PEP mutase superfamily.
CC Methylisocitrate lyase family. {ECO:0000256|ARBA:ARBA00009282,
CC ECO:0000256|HAMAP-Rule:MF_01939, ECO:0000256|RuleBase:RU361121}.
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DR EMBL; JH611185; EJP72849.1; -; Genomic_DNA.
DR AlphaFoldDB; J4KSK2; -.
DR HOGENOM; CLU_027389_3_2_6; -.
DR UniPathway; UPA00946; -.
DR Proteomes; UP000010116; Unassembled WGS sequence.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046421; F:methylisocitrate lyase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019629; P:propionate catabolic process, 2-methylcitrate cycle; IEA:UniProtKB-UniRule.
DR CDD; cd00377; ICL_PEPM; 1.
DR Gene3D; 3.20.20.60; Phosphoenolpyruvate-binding domains; 1.
DR HAMAP; MF_01939; PrpB; 1.
DR InterPro; IPR039556; ICL/PEPM.
DR InterPro; IPR018523; Isocitrate_lyase_ph_CS.
DR InterPro; IPR012695; PrpB.
DR InterPro; IPR015813; Pyrv/PenolPyrv_Kinase-like_dom.
DR InterPro; IPR040442; Pyrv_Kinase-like_dom_sf.
DR NCBIfam; TIGR02317; prpB; 1.
DR PANTHER; PTHR42905:SF5; CARBOXYVINYL-CARBOXYPHOSPHONATE PHOSPHORYLMUTASE, CHLOROPLASTIC; 1.
DR PANTHER; PTHR42905; PHOSPHOENOLPYRUVATE CARBOXYLASE; 1.
DR Pfam; PF13714; PEP_mutase; 1.
DR SUPFAM; SSF51621; Phosphoenolpyruvate/pyruvate domain; 1.
DR PROSITE; PS00161; ISOCITRATE_LYASE; 1.
PE 3: Inferred from homology;
KW Lyase {ECO:0000256|HAMAP-Rule:MF_01939, ECO:0000256|RuleBase:RU361121};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_01939};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01939};
KW Reference proteome {ECO:0000313|Proteomes:UP000010116}.
FT BINDING 42..44
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 82
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 84
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 119..120
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 154
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 184
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 206..208
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 237
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
FT BINDING 266
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01939"
SQ SEQUENCE 293 AA; 32050 MW; A5DEBA9887CA65B2 CRC64;
MSAGKKFREA IQENSPLIIP GVINAYAAIL AKKSNHKAIY LSGGGVAAAS YGIPDLGITS
MEDVLTDAKR ITSASDLPLL VDIDTGWGGA FNISKTIKEF IKAGVAAVHI EDQVSQKRCG
HRPNKSLVSS EEMQDRLKAA ADARNDENFF IMARTDALAS EGMAASIERS LAYIEAGADG
IFFEAATSID EYNEFKESIN VPVLANITEF GKTPLFTATE LQNVGIEMVL YPLTAFRAMS
KIAEKIYVSI LKDGTQEGLL DIMQTREELY TNLDYHSFEK KLDDLFSEND RES
//
