2.5.1.73: O-phospho-L-seryl-tRNA:Cys-tRNA synthase
This is an abbreviated version!
For detailed information about O-phospho-L-seryl-tRNA:Cys-tRNA synthase, go to the full flat file.
Word Map on EC 2.5.1.73
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2.5.1.73
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cys-trnacys
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methanogen
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archaea
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o-phosphoseryl-trna
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seprs
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cysteinyl-trna
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o-phosphoserine
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sulfur
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cysrs
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trna-dependent
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cysteinyl-trnacys
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jannaschii
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methanocaldococcus
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selenocysteine
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pyridoxal
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methanosarcina
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sec
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aminoacylation
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misacylated
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acetivorans
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auxotrophy
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persulfide
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relay
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sep-trna:sec-trna
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homocysteine
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fulgidus
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isoacceptors
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aminoacyl-trnas
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archaeoglobus
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trna-bound
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maripaludis
- 2.5.1.73
-
cys-trnacys
-
methanogen
- archaea
-
o-phosphoseryl-trna
- seprs
-
cysteinyl-trna
- o-phosphoserine
- sulfur
- cysrs
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trna-dependent
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cysteinyl-trnacys
- jannaschii
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methanocaldococcus
- selenocysteine
- pyridoxal
-
methanosarcina
-
sec
- aminoacylation
-
misacylated
- acetivorans
-
auxotrophy
- persulfide
-
relay
-
sep-trna:sec-trna
- homocysteine
- fulgidus
-
isoacceptors
- aminoacyl-trnas
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archaeoglobus
-
trna-bound
- maripaludis
Reaction
Synonyms
MJ1678, Sep-tRNA-Cys-tRNA synthase, Sep-tRNA:Cys-tRNA synthase, SepCysS
ECTree
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Systematic Name
Systematic Name on EC 2.5.1.73 - O-phospho-L-seryl-tRNA:Cys-tRNA synthase
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O-phospho-L-seryl-tRNACys:hydrogen sulfide 2-aminopropanoate transferase
In organisms like Archaeoglobus fulgidus lacking EC 6.1.1.16 (cysteine---tRNA ligase) for the direct Cys-tRNACys formation, Cys-tRNACys is produced by an indirect pathway, in which EC 6.1.1.27 (O-phosphoseryl-tRNA ligase) ligates O-phosphoserine to tRNACys, and EC 2.5.1.73 converts the produced O-phospho-L-seryl-tRNACys to Cys-tRNACys. The SepRS/SepCysS pathway is the sole route for cysteine biosynthesis in the organism [1]. Methanosarcina mazei can use both pathways, the direct route using EC 6.1.1.16 (cysteine---tRNA ligase) and the indirect pathway with EC 6.1.1.27 (O-phosphoseryl-tRNA ligase) and EC 2.5.1.73 [2].