2IME | pdb_00002ime

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	IMS	e2imeA1	A: a/b three-layered sandwiches	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: IMS	ECOD (v294.1)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	2-hydroxychromene-2-carboxylate isomerase	glutathione transferase activity transferase activity transferase activity, transferring alkyl or aryl (other than methyl) groups catalytic activity 2-hydroxychromene-2-carboxylate isomerase activity isomerase activity intramolecular oxidoreductase activity peroxidase activity oxidoreductase activity antioxidant activity oxidoreductase activity, acting on peroxide as acceptor glutathione peroxidase activity	naphthalene catabolic process catabolic process hydrocarbon catabolic process metabolic process cellular process hydrocarbon metabolic process glutathione metabolic process modified amino acid metabolic process sulfur compound metabolic process	-

Chains	Accession	Name	Type
A	IPR044087	2-hydroxychromene-2-carboxylate isomerase NahD-like	Family
A	IPR051924	Glutathione S-transferase Kappa/NadH	Family
A	IPR001853	DSBA-like thioredoxin domain	Domain
A	IPR014440	HCCA isomerase/glutathione S-transferase kappa	Family
A	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily

Chains	Enzyme Name	Description	Catalytic Residues
A	2-hydroxychromene-2-carboxylate isomerase M-CSA #983	Catalyzes the reversible glutathione-dependent isomerization of 2-hydroxychromene-2-carboxylate (HCCA) to trans-O-hydroxybenzylidenepyruvate (THBPA). HCCA isomerases are present in most aerobic organisms including microorganisms, plants, and animals. The group kappa GSH transferases (k-GSTs) are a close relative of the largest group of proteins in nature; the GST group. k-GSTs are dimers with a main catalytic domain, which is the N-terminal domain containing the thioredoxin domain, and the C-terminal domain which is mostly alfa-helical and unlike its GST relatives, inserted into the N-terminal domain. HCCA is a part of the naphthalene catabolic pathway of Pseudomonas putida.	Defined by 5 residues: SER:A-11VAL:A-168TRP:A-179ASN:A-181ASP:A-182 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.5.1.18 (PDB Primary Data) Search M-CSA Motif + EC 2.5.1.18 EC: 5.99.1.4 (UniProt) Search M-CSA Motif + EC 5.99.1.4

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

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