the dna directed synthesis of an rna molecule is performed by an enzyme called transcription.
the dna directed synthesis of an rna molecule is performed by an enzyme called transcription.
the dna directed synthesis of an rna molecule is performed by an enzyme called?
transcription
(rna-polymerase)-subunit kinase









































in enzymology, a [rna-polymerase]-subunit kinase () is an enzyme that catalyzes the chemical reaction









































thus, the two substrates of this enzyme are atp and dna-directed rna polymerase, whereas its two products are adp and phospho-[dna-directed rna polymerase].









































this enzyme belongs to the family of transferases, specifically those transferring a phosphate group to the sidechain oxygen atom of serine or threonine residues in proteins (protein-serine/threonine kinases). the systematic name of this enzyme class is atp:[dna-directed rna polymerase] phosphotransferase. other names in common use include ctd kinase, and stk9.
(rna-polymerase)-subunit kinase
dna replication begins at a specific site in the dna molecule called the origin of replication. the enzyme helicase unwinds and separates a portion of the dna molecule after which single-strand binding proteins react with and stabilize the separated, single-stranded sections of the dna molecule. the enzyme complex dna polymerase engages the separated portion of the molecule and initiates the process of replication. dna polymerase can only connect new dna nucleotides to a pre-existing chain of nucleotides. therefore, replication begins as an enzyme called primase assembles an rna primer at the origin of replication. the rna primer consists of a short sequence of rna nucleotides, complementary to a small, initial section of the dna strand being prepared for replication. dna polymerase is then able to add dna nucleotides to the rna primer and thus begin the process of constructing a new complementary strand of dna. later the rna primer is enzymatically removed and replaced with the appropriate sequence of dna nucleotides. because the two complementary strands of the dna molecule are oriented in opposite directions and the dna polymerase can only accommodate replication in one direction, two different mechanisms for copying the strands of dna are employed. one strand is replicated continuously towards the unwinding, separating portion of the original dna molecule; while the other strand is replicated discontinuously in the opposite direction with the formation of a series of short dna segments called okazaki fragments. each okazaki fragment requires a separate rna primer. as the okazaki fragments are synthesized, the rna primers are replaced with dna nucleotides and the fragments are bonded together in a continuous complementary strand.
nuclear dna