Entry
Name
isethionate sulfite-lyase;
islA (gene name)
Class
Lyases;
Carbon-sulfur lyases;
Carbon-sulfur lyases (only sub-subclass identified to date)
BRITE hierarchy
Sysname
isethionate sulfite-lyase
Reaction(IUBMB)
isethionate = acetaldehyde + sulfite [RN:
R12763 ]
Reaction(KEGG)
Substrate
Product
Comment
The enzyme, characterized from the human gut bacterium Bilophila wadsworthia, participates in a taurine degradation pathway that leads to sulfide production. The active form of the enzyme contains a glycyl radical that is generated by a dedicated activating enzyme via chemistry involving S-adenosyl-L-methionine (SAM) and a [4Fe-4S] cluster.
History
EC 4.4.1.38 created 2021
Pathway
ec00430 Taurine and hypotaurine metabolism
Orthology
K25261 isethionate sulfite-lyase
Genes
MANA : MAMMFC1_01805(bssA_1) MAMMFC1_01806(bssA_2)
STED : SPTER_02740(cutC_1) SPTER_04740(cutC_2)
SSPH : SPSPH_029460(pflD_1) SPSPH_029620(cutC)
SSID : SPSIL_046360(pflD) SPSIL_046550(cutC_1)
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Taxonomy
Reference
Authors
Peck SC, Denger K, Burrichter A, Irwin SM, Balskus EP, Schleheck D.
Title
A glycyl radical enzyme enables hydrogen sulfide production by the human intestinal bacterium Bilophila wadsworthia.
Journal
Reference
Authors
Xing M, Wei Y, Zhou Y, Zhang J, Lin L, Hu Y, Hua G, N Nanjaraj Urs A, Liu D, Wang F, Guo C, Tong Y, Li M, Liu Y, Ang EL, Zhao H, Yuchi Z, Zhang Y.
Title
Radical-mediated C-S bond cleavage in C2 sulfonate degradation by anaerobic bacteria.
Journal
Sequence
Other DBs
ExplorEnz - The Enzyme Database: 4.4.1.38
ExPASy - ENZYME nomenclature database: 4.4.1.38
LinkDB
All DBs