RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 2, contains the active site ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 2, contains the active site. The invariant motif -NADFDGD- binds the active site magnesium ion [1,2].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 4, represents the funnel do ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 4, represents the funnel domain. The funnel contain the binding site for some elongation factors [1,2].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 3, represents the pore doma ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 3, represents the pore domain. The 3' end of RNA is positioned close to this domain. The pore delimited by this domain is thought to act as a channel through which nucleotides enter the active site and/or where the 3' end of the RNA may be extruded during back-tracking [1,2].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 5, represents the discontin ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 5, represents the discontinuous cleft domain that is required to from the central cleft or channel where the DNA is bound [1,2].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 1, represents the clamp do ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain, domain 1, represents the clamp domain, which a mobile domain involved in positioning the DNA, maintenance of the transcription bubble and positioning of the nascent RNA strand [1,2].
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and the meth ...
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and the methylation of the GpppN cap [1-3]. It consists of an N-terminal RNA triphosphatase (TPase)-guanylyltransferase (GTase) module, and a C-terminal guanine-N7-methyltransferase (MTase) module (Pfam:PF03291) [4]. The N-terminal module comprises a TPase domain (Pfam:PF10640), followed by the GTase at the C-terminal, which consists of the nucleotidyltransferase (NTPase, this entry) and OB fold (Pfam:PF21005) domains [3,4]. The TPase and GTase modules stabilize their active conformations and their contacts also clamp the NTase and OB fold.
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and t ...
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and the methylation of the GpppN cap [1-3]. It consists of an N-terminal RNA triphosphatase (TPase)-guanylyltransferase (GTase) module, and a C-terminal guanine-N7-methyltransferase (MTase) module (Pfam:PF03291) [4]. The N-terminal module comprises a TPase domain, represented in this entry, followed by the GTase at the C-terminal, which consists of the nucleotidyltransferase (NTPase, Pfam:PF21004) and OB fold (Pfam:PF21005) domains [4]. This domain catalyses the hydrolysis of the the 5' triphosphate end of the pre-mRNA.
This entry represents mRNA (guanine-N(7))-methyltransferase, which can either be found as a single domain protein, or as a domain within the mRNA-capping enzyme catalytic subunit. mRNA (guanine-N(7))-methyltransferase methylates the N7 position of th ...
This entry represents mRNA (guanine-N(7))-methyltransferase, which can either be found as a single domain protein, or as a domain within the mRNA-capping enzyme catalytic subunit. mRNA (guanine-N(7))-methyltransferase methylates the N7 position of the added guanosine to the 5'-cap structure of mRNAs. It binds RNA containing 5'-terminal GpppC [1-5]. Viral mRNA capping enzymes, meanwhile, are multidomain proteins that catalyse the first two reactions in the mRNA cap formation pathway [5]. They are heterodimers consisting of a large (catalytic) and small subunit.
mRNA-capping enzyme catalytic subunit, GTase, OB fold
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and t ...
mRNA-capping enzyme catalytic subunit from Vaccinia virus (MCEL, also known as mRNA-capping enzyme D1 subunit) catalyses the hydrolysis of the 5' triphosphate end of the pre-mRNA, the capping of the resulting diphosphate RNA end with GMP and the methylation of the GpppN cap [1-3]. It consists of an N-terminal RNA triphosphatase (TPase)-guanylyltransferase (GTase) module and a C-terminal guanine-N7-methyltransferase (MTase) module (Pfam:PF03291). The N-terminal module comprises a TPase domain (Pfam:PF10640), followed by the GTase at the C-terminal, which consists of the nucleotidyltransferase (NTPase, Pfam:PF21004) and OB fold (represented in this entry) domains [1]. This domain contains an essential motif (RxxK) for GTase activity.
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Rpb2 is the second largest subunit of the RNA p ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Rpb2 is the second largest subunit of the RNA polymerase. This domain comprised of the structural domains anchor and clamp [1]. The clamp region (C-terminal) contains a zinc-binding motif [1]. The clamp region is named due to its interaction with the clamp domain found in Rpb1. The domain also contains a region termed "switch 4". The switches within the polymerase are thought to signal different stages of transcription [1].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 3, s also known as the fork domain and is ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 3, s also known as the fork domain and is proximal to catalytic site [1].
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain represents the hybrid binding domain ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). This domain represents the hybrid binding domain and the wall domain [1]. The hybrid binding domain binds the nascent RNA strand / template DNA strand in the Pol II transcription elongation complex. This domain contains the important structural motifs, switch 3 and the flap loop and binds an active site metal ion[1]. This domain is also involved in binding to Rpb1 and Rpb3 [1]. Many of the bacterial members contain large insertions within this domain, as region known as dispensable region 2 (DRII).
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 5, is also known as the external 2 domain ...
RNA polymerases catalyse the DNA dependent polymerisation of RNA. Prokaryotes contain a single RNA polymerase compared to three in eukaryotes (not including mitochondrial. and chloroplast polymerases). Domain 5, is also known as the external 2 domain [1].