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Function
Leukotriene A4 Hydrolase (LTA4H) is an aminopeptidase which converts leukotriene A4 to leukotriene B4 as part of the arachidonic acid metabolism[1] . LTA4H is a bifunctional Zn+2 enzyme.
Relevance
LTA4H inhibitors have potential in targeting chronic, autoimmune-driven inflammation[2] .
Disease
Mutations in LTA4H are linked to susceptibility to asthma and to cardiovascular disease.
Structural highlights
LTA4H structure shows 3 domains: N-terminal, catalytic and C-terminal. The catalytic domain is made of 2 lobes: an α-helical one and an α/β one. The catalytic site is located between the 2 lobes and contains a Zn+2 ion[3]. Water molecules shown as red spheres.
1st Yb coordination site.
2nd Yb coordination site.
- ↑ Paige M, Wang K, Burdick M, Park S, Cha J, Jeffery E, Sherman N, Shim YM. Role of leukotriene A4 hydrolase aminopeptidase in the pathogenesis of emphysema. J Immunol. 2014 Jun 1;192(11):5059-68. doi: 10.4049/jimmunol.1400452. Epub 2014, Apr 25. PMID:24771855 doi:https://dx.doi.org/10.4049/jimmunol.1400452
- ↑ Fourie AM. Modulation of inflammatory disease by inhibitors of leukotriene A4 hydrolase. Curr Opin Investig Drugs. 2009 Nov;10(11):1173-82. PMID:19876785
- ↑ Thunnissen MM, Nordlund P, Haeggstrom JZ. Crystal structure of human leukotriene A(4) hydrolase, a bifunctional enzyme in inflammation. Nat Struct Biol. 2001 Feb;8(2):131-5. PMID:11175901 doi:10.1038/84117
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3D Structures of Leukotriene A4 Hydrolase
Updated on 26-October-2025
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- LTA4H
- LTA4H + inhibitor
- 3fh5, 3fh7, 3fh8, 3fhe, 3ful, 3fum, 3fun - hLTA4H+pyrrolidine inhibitor
- 1hs6 - hLTA4H+bestatin
- 3ftz, 3ftv, 3ftw, 3ftx, 3fui - hLTA4H+aniline derivative
- 3fts, 3ftu - hLTA4H+resveratrol derivative
- 3fty, 3fu0 - hLTA4H+pyridine derivative
- 3fu3, 3fu5, 3fu6, 3fud - hLTA4H+thio derivative
- 3fue, 3fuf, 3fuh - hLTA4H+bestatin+indole derivative
- 3fuj, 3fuk - hLTA4H+indole derivative
- 3b7r, 3cho, 3chp, 3chq, 3chr, 3chs, 2r59, 3u9w, 4r7l, 4rsy, 5aen, 5bpp, 6enc, 6end, 7auz, 7av0, 7av1, 7av2, 8ava, 8awh, 8twx - hLTA4H+inhibitor
- 3b7u - hLTA4H+kelatorphan
- 2vj8 - hLTA4H+hydroxamic acid
- 4dpr – hLTA4H + captopril
- 4ms6, 7kze, 7llq - hLTA4H +tripeptide analog
- 4l2l - hLTA4H + thiazol derivative
- 4mkt - hLTA4H +tripeptide analog + thiazol derivative
- 3b7s, 3b7t, 6enb - hLTA4H (mutant)+tripeptide
- 6o5h – hLTA4H + modifier
- 4gaa - LTA4H+bestatin – frog
- 2xq0 – yLTA4H+bestatin
References
proteopedia link