4H2H
Crystal structure of an enolase (mandalate racemase subgroup, target EFI-502101) from Pelagibaca bermudensis htcc2601, with bound mg and l-4-hydroxyproline betaine (betonicine)
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | PF02746 | e4h2hA1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| A | PF13378 | e4h2hA2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| B | PF02746 | e4h2hB1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| B | PF13378 | e4h2hB2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| C | PF02746 | e4h2hC1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| C | PF13378 | e4h2hC2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| D | PF02746 | e4h2hD1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| D | PF13378 | e4h2hD2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| E | PF02746 | e4h2hE1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| E | PF13378 | e4h2hE2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| F | PF02746 | e4h2hF1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| F | PF13378 | e4h2hF2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| G | PF02746 | e4h2hG1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| G | PF13378 | e4h2hG2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
| H | PF02746 | e4h2hH1 | A: a+b two layers | X: Enolase-N/ribosomal protein | H: Enolase N-terminal domain-like (From Topology) | T: Enolase N-terminal domain-like | F: PF02746 | ECOD (1.6) |
| H | PF13378 | e4h2hH2 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: PF13378 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| PF02746 | Mandelate racemase / muconate lactonizing enzyme, N-terminal domain (MR_MLE_N) | Mandelate racemase / muconate lactonizing enzyme, N-terminal domain | SCOP reports fold similarity with enolase N-terminal domain. | Domain | |
| PF13378 | Enolase C-terminal domain-like (MR_MLE_C) | Enolase C-terminal domain-like | This domain appears at the C-terminus of many of the proteins that carry the MR_MLE_N Pfam:PF02746 domain. EC:4.2.1.40. | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| Mandelate racemase/muconate lactonizing enzyme |
| - |
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| IPR034593 | D-galactonate dehydratase DgoD-like | Family | |
| IPR029065 | Enolase C-terminal domain-like | Domain | |
| IPR013341 | Mandelate racemase/muconate lactonizing enzyme, N-terminal domain | Domain | |
| IPR034622 | 4R-hydroxyproline betaine 2-epimerase | Family | |
| IPR013342 | Mandelate racemase/muconate lactonizing enzyme, C-terminal | Domain | |
| IPR029017 | Enolase-like, N-terminal | Homologous Superfamily | |
| IPR036849 | Enolase-like, C-terminal domain superfamily | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| 4-hydroxyproline betaine 2-epimerase M-CSA #940 | Catalyses the 2-epimerisation of trans-4-hydroxy-L-proline betaine (tHyp-B) to cis-4-hydroxy-D-proline betaine (cHyp-B). These enzymes are involved in a catabolic pathway that degrades tHyp-B to alpha-ketoglutarate. This pathway would permit the utilisation of tHyp-B as a carbon and nitrogen source in the absence of osmotic stress, since tHyp-B functions as an osmolyte and is not catabolised when it is needed as osmoprotectant. Can also catalyse the racemisation of L-proline betaine. | Defined by 6 residues: LYS:A-172 [auth A-163]ASP:A-202 [auth A-193]GLU:A-227 [auth A-218]ASP:A-250 [auth A-241]LYS:A-274 [auth A-265]TRP:A-329 [auth A-320] | |
