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| '''Dehalogenases''' catalyze the removal of halogen atom from substrates.<br /> | | '''Dehalogenases''' catalyze the removal of halogen atom from substrates.<br /> |
| • '''Haloalkane dehalogenase''' converts haloalkanes to alcohol<br /> | | • '''Haloalkane dehalogenase''' converts haloalkanes to alcohol<ref>PMID:21294712</ref><br /> |
| • '''Halohydrin dehalogenase''' converts halohydrins to epoxide<br /> | | • '''Halohydrin dehalogenase''' converts halohydrins to epoxide<br /> |
| • '''L-2 haloacid dehalogenase''' converts L-2-haloacids to D-2-hydroxyacid<br /> | | • '''L-2 haloacid dehalogenase''' converts L-2-haloacids to D-2-hydroxyacid<br /> |
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| == Relevance == | | == Relevance == |
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| | Haloalkane dehalogenase is tested for the biodegredation of toxic industrial by-products. |
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| == Structural highlights == | | == Structural highlights == |
Revision as of 10:19, 22 December 2015
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Function
Dehalogenases catalyze the removal of halogen atom from substrates.
• Haloalkane dehalogenase converts haloalkanes to alcohol[1]
• Halohydrin dehalogenase converts halohydrins to epoxide
• L-2 haloacid dehalogenase converts L-2-haloacids to D-2-hydroxyacid
• S-2 haloacid dehalogenase converts S-2-haloacids to R-2-hydroxyacid
• 4-chlorobenzoyl CoA dehalogenase converts 4-chlorobenzoyl CoA to 4-hydroxybenzoyl CoA
• Fluoroacetate dehalogenase converts fluoroacetate to glycolate
• Iodotyrosine dehalogenase converts iodotyrosine to tyrosine
• cis- and trans-3-chloroacrylic acid dehalogenase converts 3-chloroacrylate to malonate semialdehyde
• 5-chloromuconolactone dehalogenase converts 5-chloromuconolactone to E-dienelactone.
• Tetrachloroethene reductive dehalogenase catalyzes the conversion of trichloroethene, Cl- and acceptor to tetrachloroethene and reduced acceptor.
Disease
Relevance
Haloalkane dehalogenase is tested for the biodegredation of toxic industrial by-products.
Structural highlights
- ↑ Koudelakova T, Chovancova E, Brezovsky J, Monincova M, Fortova A, Jarkovsky J, Damborsky J. Substrate specificity of haloalkane dehalogenases. Biochem J. 2011 Apr 15;435(2):345-54. doi: 10.1042/BJ20101405. PMID:21294712 doi:https://dx.doi.org/10.1042/BJ20101405
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3D structures of dehalogenase
Updated on 22-December-2015
{"openlevels":0}
- Haloalkane dehalogenase (HDH)
- 2had, 1ede, 2pky, 2yxp – XaHDH – Xanthobacter autotrophicus
- 1hde, 1be0, 1bee, 1bez – XaHDH (mutant)
- 1bn6, 1bn7, 4kaa, 4kac, 4kaf – RrHDH – Rhodococcus rhodochrous
- 2v9z, 4wcv – RrHDH (mutant)
- 1cv2 – SpHDH – Sphingomonas paucimobilis
- 4h77 – SphHDH – Sphignobium
- 4h7d, 4h7k – SphHDH (mutant)
- 2xt0 – HDH – Plesiocystis pacifica
- 3wi7 – AtHDH – Agrobacterium tumefaciens
- 3wib – AtHHDH (mutant)
- Haloalkane dehalogenase complex with halide ion
- 1edb, 1edd, 2eda, 2edc, 2dhe, 1b6g – XaHDH + halide
- 1cij – XaHDH (mutant) + Br
- 1d07, 1iz7, 1k5p, 1mj5 – SpHDH + halide
- 3fbw, 1cqw, 4hzg – RrHDH + halide
- 3a2m, 3a2n, 3afi – BjHDH + Cl – Bradyrhizobium japonicum
- 3a2l – BjHDH (mutant) + Cl
- 4k2a – HDH + Cl – Bradyrhizobium elkanii
- 3rk4, 3sk0, 4f5z, 4f60 – RrHDH (mutant) + halide
- 4h7e, 4h7f, 4h7h, 4h7i, 4h7j 4h7k – SphHDH (mutant) + halide
- 4brz – RhHDH + Cl - Rhodobacteraceae
- 4mj3 – HDH + Cl – Mycobacterium rhodesiae
- Haloalkane dehalogenase other complexes
- 2dhc – XaHDH + ethylene dichloride
- 2dhd – XaHDH + amono-chloroethoxy-oxobutanoic acid + Cl
- 1g42 – SpHDH + dichloropropane + Cl
- 2bfn – SpHDH + dichloropropanol + Cl
- 1g4h – SpHDH (mutant) + butanol + Cl
- 1g5f – SpHDH + dichloroethane + Cl
- 1iz8 – SpHDH + propanediol + Cl
- 4c6h – RhHDH + hexanol + Cl
- 3fwh, 3g9x, 4e46 – RrHDH + isopropanol + Cl
- 1k6e – SpHDH + bromopropanol + Cl + Br
- 1k63 – SpHDH + bromopropene-1-ol + Cl + Br
- 4fwb – SpHDH (mutant) + trichloropropane + Cl
- 2o2h – MtHDH 3 + dichloroethane + Cl – Mycobacterium tuberculosis
- 2o2i – MtHDH 3 + propanediol + Br
- 2qvb – MtHDH 3 + ethanediol + Cl
- Fluoroacetate dehalogenase (FDH)
- 1y37 – BuFDH – Burkholderia
- 3r3u – RpFDH – Rhodopseudomonas palustris
- 3r40, 3r41 – RpFDH (mutant)
- Fluoroacetate dehalogenase complexes
- 3r3v, 3r3y – RpFDH (mutant) + fluoroacetate
- 3r3w – RpFDH (mutant) + chloroacetate
- 3r3x – RpFDH (mutant) + bromoacetate
- 3r3z – RpFDH + glycolate
- 3b12 – BuFDH (mutant) + fluoroacetate
- Halohydrin dehalogenase (HHDH)
- 1zmo – HHDH – Anthrobacter
- 3zn2 – AtHHDH
- Halohydrin dehalogenase complexes
- 1pwx – AtHHDH + Br
- 1px0 – AtHHDH + haloalcohol mimic
- 1zo8 – AtHHDH + p-nitrostyrene oxide
- 1pwz, 1zmt – AtHHDH + styrene oxide + Cl
- 4ixt – AtHHDH (mutant) + ethyl cyano-hydroxybutyrate
- 4ixw – RrHHDH (mutant) + ethyl oxiranyl acetate – Rhizobium radiobacter
- 4iy1 – RrHHDH + Cl
- L-2-haloacid dehalogenase (LHDH)
- L-2-haloacid dehalogenase complexes
- 1aq6, 1qq5 – XaLHDH + formic acid
- 1zrm – PsLHDH (mutant) + butanoic acid
- 1zrn – PsLHDH (mutant) + acetic acid
- 1qh9 – PsLHDH + lactic acid
- 2w11 – StLHDH + lactic acid
- 1qq6, 1qq7 – XaLHDH + aspartate carboxymethyl ester + Cl
- 2yn4 – RhLHDH + chlorobutyrate
- DL-2-haloacid dehalogenase (DLHDH)
- 4n2x – MeDLHDH – Methylobacterium
- 3wj8 – MeDLHDH + bromo-methylpropionate
- S-2-haloacid dehalogenase (SHDH)
- 2no4 – BcSHDH IVA – Burkholderia cepacia
- 2no5 – BcSHDH IVA + 2-monochloroprapanate
- Iodotyrosine dehalogenase (ITDH)
- 3gb5 – mITDH – mouse
- 3to0 – mITDH (mutant)
- 3gfd – mITDH + iodotyrosine
- 3tnz – mITDH (mutant) + iodotyrosine
- 3gh8 – mITDH + diiodotyrosine
- 4ttb – hITDH 1 + FMN
- 4ttc – hITDH 1 + FMN + iodotyrosine
- cis-3-chloroacrylic acid dehalogenase (CaaD)
- 2flz, 3mf8 – CbCaaD – Coryneform bacterium
- 3mf7 – CbCaaD + oxirane-carboxylate
- 2flt – CbCaaD + lactic acid
- trans-3-chloroacrylic acid dehalogenase (TaaD)
- 3ej3 – PpTaaD α+β subunits – Pseudomonas pavonacea
- 3ej7, 3ej9 – PpTaaD α (mutant) +β subunits
- 1s0y – PpTaaD α+β subunits + malonic acid
- 5-chloromuconolactone dehalogenase (ClcF)
- 3znu, 3znj, 4fpi – RoClcF – Rhodococcus opacus
- 3zo7 – RoClcF + 5-chloromuconolactone
- 4-chlorobenzoyl CoA dehalogenase (CBCD)
- 1nzy – PsCBCD
- 1jxz – PsCBCD + hydroxybenzoyl CoA
- Tetrachloroethene reductive dehalogenase (TCRD)
- 4uqu, 4ur3 – SmTCRD catalytic subunit – Sulfurospirillum multivorans
- 4ur0 – SmTCRD catalytic subunit + trichloroethene
- 4ur1 – SmTCRD catalytic subunit + tribromoethene
- 4ur2 – SmTCRD catalytic subunit + iodide
References
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