» Articles » PMID: 6201828

Complex RNA Chain Elongation Kinetics by Wheat Germ RNA Polymerase II

Overview
Specialty Biochemistry
Date 1984 Apr 11
PMID 6201828
Citations 6
Authors
Affiliations
Soon will be listed here.
Abstract

Kinetics of RNA chain elongation catalyzed by wheat germ RNA polymerase II have been studied using various synthetic DNA templates in the presence of excess dinucleotide monophosphate primers. With single- or double-stranded homopolymer templates, the double reciprocal plots 1/(velocity) as a function of 1/(nucleotide substrate) exhibit positive, negative or no curvature. With poly(dAT) as template, the mechanism of nucleoside monophosphate incorporation into RNA is not the ping-pong kinetic mechanism which was derived for E. coli RNA polymerase (6). Noncomplementary nucleoside triphosphates inhibit RNA transcription allosterically. Cordycepin triphosphate behaves as ATP, and not only inhibits AMP incorporation but also that of UMP and GMP on appropriate templates. The reason for this complex kinetic behavior is not yet understood. Possibilities are raised that there are several nucleoside triphosphate binding sites on wheat germ RNA polymerase II, that additional nucleoside triphosphate dependent enzymatic activities are required for reaction to occur or that the Km value for incorporation of a given nucleoside monophosphate into RNA is dependent on the length of the RNA chain and/or the nucleotide sequence surrounding the complementary base on the DNA template.

Citing Articles

Base-pair-resolution genome-wide mapping of active RNA polymerases using precision nuclear run-on (PRO-seq).

Mahat D, Kwak H, Booth G, Jonkers I, Danko C, Patel R Nat Protoc. 2016; 11(8):1455-76.

PMID: 27442863 PMC: 5502525. DOI: 10.1038/nprot.2016.086.


Enzymatic properties of plant RNA polymerases : An approach to the study of transcription in plants.

Cooke R, Durand R, Job C, Penon P, Teissere M, Job D Plant Mol Biol. 2013; 3(4):217-25.

PMID: 24310433 DOI: 10.1007/BF00029657.


Effect of low nucleotide concentrations on abortive elongation catalysed by wheat-germ RNA polymerase II.

Job C, Dietrich J, Shire D, Teissere M, Job D Biochem J. 1987; 244(1):151-7.

PMID: 3499138 PMC: 1147966. DOI: 10.1042/bj2440151.


Kinetic co-operativity of wheat-germ RNA polymerase II with adenosine 5'-[beta gamma-imido]triphosphate as substrate.

Job C, Soulie J, Job D Biochem J. 1988; 252(1):55-63.

PMID: 3421909 PMC: 1149106. DOI: 10.1042/bj2520055.


Effect of Sarkosyl and heparin on single-step addition reactions catalysed by wheat-germ RNA polymerase II--poly[d(A-T)]transcription complexes.

De Mercoyrol L, Job C, Job D Biochem J. 1989; 260(3):795-801.

PMID: 2475103 PMC: 1138747. DOI: 10.1042/bj2600795.


References
1.
Anthony D, GOLDTHWAIT D, Wu C . Studies with the ribonucleic acid polymerase. II. Kinetic aspects of initiation and polymerization. Biochemistry. 1969; 8(1):246-56. DOI: 10.1021/bi00829a035. View

2.
Niyogi S, Stevens A . STUDIES OF THE RIBONUCLEIC ACID POLYMERASE FROM ESCHERICHIA COLI. 3. STUDIES WITH SYNTHETIC POLYRIBONUCLEOTIDES AS TEMPLATES. J Biol Chem. 1965; 240:2587-92. View

3.
Downey K, Jurmark B, So A . Determination of nucleotide sequences at promoter regions by the use of dinucleotides. Biochemistry. 1971; 10(26):4970-5. DOI: 10.1021/bi00802a021. View

4.
Rhodes G, CHAMBERLIN M . Ribonucleic acid chain elongation by Escherichia coli ribonucleic acid polymerase. I. Isolation of ternary complexes and the kinetics of elongation. J Biol Chem. 1974; 249(20):6675-83. View

5.
McClure W, Jovin T . The steady state kinetic parameters and non-processivity of Escherichia coli deoxyribonucleic acid polymerase I. J Biol Chem. 1975; 250(11):4073-80. View