Entry: O33123 Genes: leuC ML1685 MLCB637.32 Length: 476 aa

3-isopropylmalate dehydratase large subunit

LEUC_MYCLE Mycobacterium leprae (strain TN)
Navigate Overview Model Scores RCSB 1D Mol* Pockets B-Cell Epitopes Function and interactions Ontology and localisation Sequence features and PTMs Evidence and cross-references

Summary

Download FASTA UniProt: O33123 ML Locus: ML1685
Entry O33123
Reviewed reviewed
Entry Name LEUC_MYCLE
Gene Names leuC ML1685 MLCB637.32
ML locus tag ML1685
Organism Mycobacterium leprae (strain TN)
Length 476 aa
Mass 51010 Da
Annotation 3.0
Annotation Summary

Evidence and cross-references

PubMed ID 11234002
DOI ID 10.1038/35059006
STRING 272631.gene:17575528;
KEGG mle:ML1685;
eggNOG COG0065;
InterPro IPR004430;IPR015931;IPR001030;IPR018136;IPR036008;IPR050067;IPR033941;

Oligomer Models

Best Boltz2 oligomer and local AlphaFold‑3 homooligomer structure models matched to ML1685, with the same model switching, Mol*, Nightingale, pLDDT, PAE, and download functionality as monomers.
Count: 1
Assembly Method Template / Source Overall Rank Download
Homo 2-mer Boltz2 4NQY 0.812835 Download Model

Ligands

Curated ligands imported from the selected oligomer template/YAML rows. The displayed ligand code is the original template CCD code; predicted-model placeholders such as LIG1/LIG2 are not shown. Click a ligand code to focus the ligand in Mol*.
Ligands: 0
Ligand Code Ligand Name PubChem ID
No curated ligand rows were found for this oligomer in the database.

Monomer Models

Monomer structure models for ML1685, retaining all existing model selection, Mol*, Nightingale, pLDDT, PAE, and download functionality.
Count: 4
Assembly Method Model Overall Rank Download
Monomer Boltz2 0 0.923774 Download Model
Monomer AlphaFold‑3 2 0.964886 Download Model
Monomer Boltz 0 0.928808 Download Model
Monomer CHAI 4 0.193098 Download Model

Sequence & Feature Viewer

Residue-level feature tracks for the loaded model — pLDDT confidence colouring, mapped annotations, and interactive PAE selection ranges. Drag a region on the heatmap to highlight it here and in Mol*.
RCSB 1D
Sequence viewer will initialise once a structure model is loaded.
Mol* — ML1685

Mol* Structure Viewer

Local mmCIF model display for ML1685 with Mol* controls hidden.
Default: Homo 2-mer • Boltz2
Preparing Homo 2-mer • Boltz2 model 0 for ML1685…
Residue focus: none
Heterooligomer ML IDs / chain selection

PAE Map Panel

Predicted aligned error heatmap for the currently loaded model, when pairwise confidence data are available in the local mmCIF.
PAE • Waiting for Model
PAE Heatmap
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Scored residue
Aligned residue
Hover over the heatmap to inspect residue-pair PAE values.
Click a cell or drag across the heatmap to select residue blocks and mirror them in the sequence viewer.

B-cell Epitope Propensity

Per-residue conformational B-cell epitope predictions from DiscoTope-3.0.
Epitope · Loading
Low
Epitope
Residue number Residue type DiscoTope-3.0 score Focus
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Annotation Summary

Function and interactions

EC number 4.2.1.33
Pathway PATHWAY: Amino-acid biosynthesis; L-leucine biosynthesis; L-leucine from 3-methyl-2-oxobutanoate: step 2/4. {ECO:0000255|HAMAP-Rule:MF_01026}.
Catalytic activity CATALYTIC ACTIVITY: Reaction=(2R,3S)-3-isopropylmalate = (2S)-2-isopropylmalate; Xref=Rhea:RHEA:32287, ChEBI:CHEBI:1178, ChEBI:CHEBI:35121; EC=4.2.1.33; Evidence={ECO:0000255|HAMAP-Rule:MF_01026};
Binding site BINDING 357; /ligand="[4Fe-4S] cluster"; /ligand_id="ChEBI:CHEBI:49883"; /evidence="ECO:0000255|HAMAP-Rule:MF_01026"; BINDING 417; /ligand="[4Fe-4S] cluster"; /ligand_id="ChEBI:CHEBI:49883"; /evidence="ECO:0000255|HAMAP-Rule:MF_01026"; BINDING 420; /ligand="[4Fe-4S] cluster"; /ligand_id="ChEBI:CHEBI:49883"; /evidence="ECO:0000255|HAMAP-Rule:MF_01026"
Cofactor COFACTOR: Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; Evidence={ECO:0000255|HAMAP-Rule:MF_01026}; Note=Binds 1 [4Fe-4S] cluster per subunit. {ECO:0000255|HAMAP-Rule:MF_01026};
Subunit structure SUBUNIT: Heterodimer of LeuC and LeuD. {ECO:0000255|HAMAP-Rule:MF_01026}.
Annotation Summary

Ontology and localisation

Gene Ontology (biological process) L-leucine biosynthetic process [GO:0009098]
Gene Ontology (GO) 3-isopropylmalate dehydratase activity [GO:0003861]; 4 iron, 4 sulfur cluster binding [GO:0051539]; metal ion binding [GO:0046872]; L-leucine biosynthetic process [GO:0009098]
Gene Ontology (molecular function) 3-isopropylmalate dehydratase activity [GO:0003861]; 4 iron, 4 sulfur cluster binding [GO:0051539]; metal ion binding [GO:0046872]
Gene Ontology IDs GO:0003861; GO:0009098; GO:0046872; GO:0051539
Protein families Aconitase/IPM isomerase family, LeuC type 1 subfamily
Sequence similarities SIMILARITY: Belongs to the aconitase/IPM isomerase family. LeuC type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_01026}.
Annotation Summary

Sequence features and PTMs

Chain CHAIN 1..476; /note="3-isopropylmalate dehydratase large subunit"; /id="PRO_0000076764"