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GO:0003962
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MF
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cystathionine gamma-synthase activity
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Catalysis of the reaction: O-succinyl-L-homoserine + L-cysteine = cystathionine + succinate.
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GO:0004121
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MF
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cystathionine beta-lyase activity
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Catalysis of the reaction: cystathionine + H2O = L-homocysteine + NH3 + pyruvate.
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GO:0004123
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MF
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cystathionine gamma-lyase activity
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Catalysis of the reaction: L-cystathionine + H2O = 2-oxobutanoate + L-cysteine + NH4+.
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GO:0009507
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CC
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chloroplast
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A chlorophyll-containing plastid with thylakoids organized into grana and frets, or stroma thylakoids, and embedded in a stroma.
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GO:0009570
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CC
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chloroplast stroma
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The space enclosed by the double membrane of a chloroplast but excluding the thylakoid space. It contains DNA, ribosomes and some temporary products of photosynthesis.
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GO:0016829
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MF
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lyase activity
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Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but onl
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GO:0019279
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BP
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L-methionine biosynthetic process from L-homoserine via cystathionine
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The chemical reactions and pathways resulting in the formation of L-methionine from other compounds, including L-homoserine, via the intermediate cystathionine.
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GO:0019343
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BP
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cysteine biosynthetic process via cystathionine
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The chemical reactions and pathways resulting in the formation of cysteine, via the intermediate cystathionine.
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GO:0019346
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BP
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transsulfuration
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The interconversion of homocysteine and cysteine via cystathionine. In contrast with enteric bacteria and mammals, Saccharomyces cerevisiae has two transsulfuration pathways employing two separate sets of enzymes.
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GO:0030170
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MF
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pyridoxal phosphate binding
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Interacting selectively and non-covalently with pyridoxal 5' phosphate, 3-hydroxy-5-(hydroxymethyl)-2-methyl4-pyridine carboxaldehyde 5' phosphate, the biologically active form of vitamin B6.
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GO:0071266
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BP
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'de novo' L-methionine biosynthetic process
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The chemical reactions and pathways resulting in the formation of L-methionine, the L-enantiomer of (2S)-2-amino-4-(methylsulfanyl)butanoic acid, from simpler components.
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