-
Siroheme (or sirohaem) is a heme-like
prosthetic group at the
active sites of some
enzymes to
accomplish the six-electron
reduction of
sulfur and nitrogen...
-
synthesised along a
branched biosynthetic pathway that is
shared with heme and
siroheme.
Chlorophyll synthase is the
enzyme that
completes the
biosynthesis of...
-
sirohydrochlorin ferrochelatase (EC 4.99.1.4)
catalyzes the
following reaction:
siroheme + 2H+ ⇌ {\displaystyle \rightleftharpoons }
sirohydrochlorin + Fe2+ This...
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intermediate in the
biosynthesis of heme, chlorophyll,
vitamin B12, and
siroheme. It is a
colorless compound, like
other porphyrinogens. The
molecular structure...
- In
molecular biology,
sirohaem synthase (or
siroheme synthase) (CysG) is a multi-functional
enzyme with S-adenosyl-L-methionine (SAM)-dependent bismethyltransferase...
- and is
synthesised along a
branched pathway that is
shared with heme and
siroheme. The
initial steps incorporate glutamic acid into 5-aminolevulinic acid...
- and is
synthesised along a
branched pathway that is
shared with heme and
siroheme. The
initial steps incorporate glutamic acid into 5-aminolevulinic acid...
- some use a
usual chlorin ring)
sirohydrochlorin (an isobacteriochlorin)
siroheme iron
Important cofactor in
sulfur ****imilation
biosynthetic intermediate...
-
uroporphyrinogen III in a
separate pathway that leads, for example, to
siroheme,
cofactor F430 and cobalamin. The
common intermediate is sirohydrochlorin...
-
latter is the
first macrocyclic intermediate common to heme, chlorophyll,
siroheme and B12 itself.
Later steps,
especially the
incorporation of the additional...
