Abstract
A type II restriction endonuclease, DraI, isolated from Deinococcus radiophilus ATCC 27603 recognises the palindromic hexanucleotide sequence (formula; see text) and cleaves it, as indicated by the arrows, to produce blunt-ended fragments. The yield of enzyme is 100 to 1000 times that of the only other known type II restriction endonuclease that recognises a sequence composed solely of A:T basepairs, the isoschizomer AhaIII (1). Ultraviolet irradiation of the DNA substrate at relatively low doses inhibits the activity of DraI by "protecting" the recognition sequence and this may be exploited to give control of partial digestion of DNA by DraI.
MeSH Terms
Adenine
Bacteria/enzymology
Base Composition
Base Sequence
DNA/radiation effects
DNA Restriction Enzymes/isolation & purification,metabolism
Deoxyribonucleases, Type II Site-Specific
Substrate Specificity
Thymine
Ultraviolet Rays
Chemicals
DNA
DNA Restriction Enzymes
Deoxyribonucleases, Type II Site-Specific
TTTAAA -specific type II deoxyribonucleases
Adenine
Thymine
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Purvis I J
Moseley B E
References (15)
15 references, click to expand
-
Studies on sequence recognition by type II restriction and modification enzymes.
CRC Crit Rev Biochem. 1982;13(3):287-323
PMID: 6293768
-
Complete nucleotide sequence of the Escherichia coli plasmid pBR322.
Cold Spring Harb Symp Quant Biol. 1979;43 Pt 1:77-90
PMID: 383387
-
Prolonged incubation in calcium chloride improves the competence of Escherichia coli cells.
Gene. 1979 May;6(1):23-8
PMID: 383576
-
Assaying of organisms for the presence of restriction endonucleases.
Methods Enzymol. 1980;65(1):19-23
PMID: 6246341
-
A general method for defining restriction enzyme cleavage and recognition sites.
Methods Enzymol. 1980;65(1):391-404
PMID: 6246360
-
Cloning in single-stranded bacteriophage as an aid to rapid DNA sequencing.
J Mol Biol. 1980 Oct 25;143(2):161-78
PMID: 6260957
-
A sequence specific endonuclease from Micrococcus radiodurans.
Biochim Biophys Acta. 1982 May 31;697(2):178-84
PMID: 6285977
-
Restriction enzyme cleavage of ultraviolet-damaged DNA.
Biochim Biophys Acta. 1982 May 31;697(2):255-8
PMID: 6285980
-
AhaIII: a restriction endonuclease with a recognition sequence containing only A:T basepairs.
FEBS Lett. 1982 Jul 5;143(2):296-300
PMID: 6288466
-
Blockage of restriction endonuclease cleavage by thymine dimers.
Photochem Photobiol. 1982 Oct;36(4):429-32
PMID: 6292966
-
Filamentous coliphage M13 as a cloning vehicle: insertion of a HindII fragment of the lac regulatory region in M13 replicative form in vitro.
Proc Natl Acad Sci U S A. 1977 Sep;74(9):3642-6
PMID: 333444
-
DNA sequencing with chain-terminating inhibitors.
Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463-7
PMID: 271968
-
Complete nucleotide sequence of SV40 DNA.
Nature. 1978 May 11;273(5658):113-20
PMID: 205802
-
The nucleotide sequence of bacteriophage phiX174.
J Mol Biol. 1978 Oct 25;125(2):225-46
PMID: 731693
-
Nucleotide sequence of bacteriophage lambda DNA.
J Mol Biol. 1982 Dec 25;162(4):729-73
PMID: 6221115