Gamma-butyrobetaine dioxygenase

Source: Wikipedia, the free encyclopedia.
BBOX1
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo / QuickGO
Ensembl
UniProt
RefSeq (mRNA)

NM_003986
NM_001376258
NM_001376259
NM_001376260
NM_001376261

NM_130452

RefSeq (protein)

NP_003977
NP_001363187
NP_001363188
NP_001363189
NP_001363190

NP_569719

Location (UCSC)Chr 11: 27.04 – 27.13 MbChr 2: 110.09 – 110.14 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Gamma-butyrobetaine dioxygenase (also known as BBOX, GBBH or γ-butyrobetaine hydroxylase) is an

mitochondrial membrane during mitochondrial beta oxidation.[6] In humans, gamma-butyrobetaine dioxygenase can be found in the kidney (high), liver (moderate), and brain (very low).[5][8] BBOX1 has recently been identified as a potential cancer gene based on a large-scale microarray data analysis.[9]

Reaction

gamma-butyrobetaine dioxygenase
Identifiers
ExPASy
NiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

Gamma-butyrobetaine dioxygenase belongs to the

2-oxoglutarate (2OG)-dependent dioxygenase
superfamily. It catalyses the following reaction:

4-trimethylammoniobutanoate (γ-butyrobetaine) +
2-oxoglutarate
+ O2 3-hydroxy-4-trimethylammoniobutanoate (
succinate
+ CO2

The three

.

This enzyme belongs to the family of

ascorbate and glutathione.[11][12][13][14] The catalytic activity of gamma-butyrobetaine dioxygenase can be stimulated with different metal ions, especially potassium ions.[15]

Both the apo (PDB id: 3N6W)

induced fit
mechanism may contribute to the catalytic activity of gamma-butyrobetaine dioxygenase.

Gamma-butyrobetaine dioxygenase is

C-C bond formation (e.g.: (1-methylimidazolidin-4-yl)acetic acid).[22]

Inhibition

Gamma-butyrobetaine dioxygenase is an inhibition target for 3-(2,2,2-trimethylhydraziniumyl)propionate (

better source needed
]

Mildronate has a similar structure to the natural substrate gamma-butyrobetaine, with a NH group replacing the CH2 of gamma-butyrobetaine at the C-4 position. A crystal structure of mldronate in complex with gamma-butyrobetaine dioxygenase was published, and it suggests mildronate bind to gamma-butyrobetaine dioxygenase in exactly the same way as gamma-butyrobetaine (PDB id: 3MS5).

non-competitive and non-hydroxylatable analogue of gamma-butyrobetaine,[38] further studies have identified mildronate is indeed a substrate for gamma-butyrobetaine dioxygenase.[17][20][39]

Similar to other

2OG mimics and aromatic inhibitors such as pyridine 2,4-dicarboxylate.[40] Other reported gamma-butyrobetaine dioxygenase inhibitors include cyclopropyl-substituted gamma-butyrobetaines[41] and 3-(2,2-dimethylcyclopropyl)propanoic acid, which is a mechanism-based enzyme inhibitor.[42]

Assay

Several

expensive instrumentation. A potentially high-throughput fluorescence-based assay has also been proposed by using a fluorinated-gamma-butyrobetaine analog.[48] The fluoride ions released as a result of gamma-butyrobetaine dioxygenase catalyses can be detected by using chemosensors such as protected fluorescein.[49]

See also

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000129151Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000041660Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^
    PMID 9753662
    .
  6. ^ a b "Entrez Gene: BBOX1 butyrobetaine (gamma), 2-oxoglutarate dioxygenase (gamma-butyrobetaine hydroxylase) 1".
  7. PMID 1735445
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  30. ISSN 1648-7966. Archived from the original
    (PDF) on 2012-03-28.
  31. ^ Vitols A, Voita D, Dzerve V (2008). "Mildronate improves carotid baroreceptor reflex function in patients with chronic heart failure" (PDF). Semin Cardiovasc Med. 13: 6. Archived from the original (PDF) on 2013-09-21.
  32. ^ Dzerve V, Matisone D, Pozdnyakov Y, Oganov R (2010). "Mildronate improves the exercise tolerance in patients with stable angina: results of a long term clinical trial" (PDF). Semin Cardiovasc Med. 16: 3. Archived from the original (PDF) on 2013-09-21.
  33. PMID 22186118
    .
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  35. ^ "Tennis pro Maria Sharapova says she takes 'full responsibility' for failed drug test". LA Times. 8 March 2016.
  36. ^ PDB: 3MS5
  37. PMID 21390379
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Further reading