Mandelate racemase

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Mandelate rasemase (MAR) catalyzes the interconversion of enantiomers of mandelate (S to R). MAR is Mg-dependent. MAR can racemize other alpha-hydroxy carbonyl compounds. MAR is involved in aromatic acids catabolism.

3D structures of mandelate racemase

Updated on 02-June-2025

2mnr – PpMAR – Pseudomonas putida

2hzg – MAR – Rhodobacter sphaeroides
2og9, 3bjs – MAR – Polaromonas
2pmq, 2rdx, 3u4f, 3fvd, 2qdd – MAR – Roseovarius
2qde – MAR – Azoarcus
3ik4 – MAR – Herpetosiphon aurantiacus
3mqt, 3sjn – MAR – Shewanella pealeana
3n4e, 4dwd – MAR – Paracoccus denitrificans
3n4f – GeMAR – Geobacillus
3msy, 3no1 – MAR – Marine actinobacterium
3n6h, 3n6j – MAR – Actinobacillus succinogenes
3ddm - BbMAR (mutant) – Bordetella bronchiseptica
3h12 – BbMAR
3ssz – MAR – Rhodobacteraceae bacterium
3t4w – MAR – Sulfitobacter
3t8q – MAR – Hoeflea phototrophica
3u9i – MAR – Roseiflexus
4dx3, 4e8g, 3tj4, 3tji – AtMAR – Agrobacterium tumefaciens
3s47 – MAR – Clostridium beijerincki
4dhg, 3vc5, 3vc6 – MAR – Thermobispora bispora
4e4f – MAR – Pectobacterium carotovorum
3thu – MAR – Sphingomonas
3toy – BrMAR – Bradyrhizobium
3ugv – MAR – alpha proteobacterium
2pod – MAR – Burkholderia pseudomallei
3dfh - VbMAR – Vibrionales bacterium

Mandelate racemase binary complex

1mns, 1mdr – PpMAR + alpha phenyl glycidate

3ops – GeMAR + lactate
1mra, 1dtn – PpMAR (mutant) + atrolactate
1mdl - PpMAR (mutant) + mandelate
4hnc - PpMAR (mutant) + benzilic acid
4m6u - PpMAR + tartronic acid
4fp1 – PpMAR + inhibitor
3tte - BrMAR + mandelate
3uxk, 3uxl – PpMAR + intermediate analog
3sbf – VbMAR (mutant) + arabinonate
3r25 – VbMAR + glycerol
4gfi – AtMAR + dipeptide epimerase
4h19 – AtMAR + ribonohydroxamate




Structure of mandelate racemase dimer complex with mandelate, glycerol, formate, Mg+2 ion (green) (PDB entry 3tte)

Drag the structure with the mouse to rotate

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Michal Harel, Alexander Berchansky, Karsten Theis