Cysteine desulfurase

Function

Cysteine desulfurase (Suf) catalyzes the conversion of L-cysteine to L-alanine and sulfane sulfur. Suf is part of the iron-sulfur cluster complex where SulS transfers the sulphide from Cys to SulU which is a scaffold protein^[1]. Suf has a role in the biosynthesis of Fe-S custers, thiamine, thionucleosides, biotin, lipoic acid, molybdopterin and NAD^[2]. Suf is a PLP-dependent enzyme.

Structural highlights

The structure of SufS contains the .

.

. The reaction product ^[3].

3D structures of cysteine desulfurase

Cysteine desulfurase 3D structures

Bacterial cysteine desulfurase complex with PLP, mercaptocysteine and alanine (PDB code 5j8q)

Drag the structure with the mouse to rotate

ReferencesReferences

↑ Albrecht AG, Peuckert F, Landmann H, Miethke M, Seubert A, Marahiel MA. Mechanistic characterization of sulfur transfer from cysteine desulfurase SufS to the iron-sulfur scaffold SufU in Bacillus subtilis. FEBS Lett. 2011 Feb 4;585(3):465-70. doi: 10.1016/j.febslet.2011.01.005. Epub, 2011 Jan 12. PMID:21236255 doi:http://dx.doi.org/10.1016/j.febslet.2011.01.005
↑ Mihara H, Esaki N. Bacterial cysteine desulfurases: their function and mechanisms. Appl Microbiol Biotechnol. 2002 Oct;60(1-2):12-23. doi:, 10.1007/s00253-002-1107-4. Epub 2002 Sep 4. PMID:12382038 doi:http://dx.doi.org/10.1007/s00253-002-1107-4
↑ Blauenburg B, Mielcarek A, Altegoer F, Fage CD, Linne U, Bange G, Marahiel MA. Crystal Structure of Bacillus subtilis Cysteine Desulfurase SufS and Its Dynamic Interaction with Frataxin and Scaffold Protein SufU. PLoS One. 2016 Jul 6;11(7):e0158749. doi: 10.1371/journal.pone.0158749., eCollection 2016. PMID:27382962 doi:http://dx.doi.org/10.1371/journal.pone.0158749

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Michal Harel, Alexander Berchansky

[1] Albrecht AG, Peuckert F, Landmann H, Miethke M, Seubert A, Marahiel MA. Mechanistic characterization of sulfur transfer from cysteine desulfurase SufS to the iron-sulfur scaffold SufU in Bacillus subtilis. FEBS Lett. 2011 Feb 4;585(3):465-70. doi: 10.1016/j.febslet.2011.01.005. Epub, 2011 Jan 12. PMID:21236255 doi:http://dx.doi.org/10.1016/j.febslet.2011.01.005

[2] Mihara H, Esaki N. Bacterial cysteine desulfurases: their function and mechanisms. Appl Microbiol Biotechnol. 2002 Oct;60(1-2):12-23. doi:, 10.1007/s00253-002-1107-4. Epub 2002 Sep 4. PMID:12382038 doi:http://dx.doi.org/10.1007/s00253-002-1107-4

[3] Blauenburg B, Mielcarek A, Altegoer F, Fage CD, Linne U, Bange G, Marahiel MA. Crystal Structure of Bacillus subtilis Cysteine Desulfurase SufS and Its Dynamic Interaction with Frataxin and Scaffold Protein SufU. PLoS One. 2016 Jul 6;11(7):e0158749. doi: 10.1371/journal.pone.0158749., eCollection 2016. PMID:27382962 doi:http://dx.doi.org/10.1371/journal.pone.0158749

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