What is HhaI?
HhaI, a Type II restriction endonuclease, recognizes the symmetric sequence 5′-GCG↓C-3′ in duplex DNA and cleaves (‘↓’) to produce fragments with 2-base, 3′-overhangs. We determined the structure of HhaI in complex with cognate DNA at an ultra-high atomic resolution of 1.0 Å.
What are Neoschizomers & isoschizomers and Isocaudomers?
Isoschizomers are the restriction enzymes which recognize and cleave at the same recognition site. For example, SphI (CGTAC/G) and BbuI (CGTAC/G) are isoschizomers of each other. Neoschizomers are the restriction enzymes which recognize the same site and have a different cleavage pattern.
How do you test for methylation?
Currently, there are three primary methods to identify and quantify DNA methylation. These are: sodium bisulfite conversion and sequencing, differential enzymatic cleavage of DNA, and affinity capture of methylated DNA (1).
What is a methylation analysis?
Methylation analysis is the study of chromosomal patterns of DNA or histone modification by methyl groups. The cytosine (C) base in DNA and lysine residue in histone tails can be methylated.
What are isoschizomers give examples?
Isoschizomers are pairs of restriction enzymes specific to the same recognition sequence. For example, SphI (CGTAC/G) and BbuI (CGTAC/G) are isoschizomers of each other.
What are the Neoschizomers?
Neoschizomers are restriction enzymes that recognize the same nucleotide sequence as their prototype but cleave at a different site. In some special applications this is a very helpful feature.
What are isoschizomers and Neoschizomers describe with relevant examples?
How do you test the extent of protection by HhaI methyltransferase?
The extent of protection by HhaI Methyltransferase is determined by the addition of 40 µl rCutSmart Buffer supplemented with 100 µg/ml BSA, 10 mM MgCl 2 and 10 units of HhaI restriction endonuclease. Incubation at 37°C for 30 minutes is followed by analysis on an agarose gel.
What is the HhaI restriction enzyme used for?
Thermo Scientific HhaI restriction enzyme recognizes GCG^C sites and cuts best at 37°C in Tango buffer. See Reaction Conditions for Restriction Enzymes for a table of enzyme activity, conditions for double digestion, and heat inactivation for this and other restriction enzymes. Note: Also available as a FastDigest enzyme for rapid DNA digestion.
What is the incubation time for HhaI methyltransferase?
HhaI Methyltransferase is incubated with 1 µg of λ DNA in 10 µl 1X rCutSmart Buffer, supplemented with 80 µM S-adenosylmethionine, for one hour at 37°C followed by 15 minutes at 65°C.
What is an E coli HhaI gene?
An E. coli strain that carries the HhaI gene from Haemophilus haemolyticus (ATCC 10014). One unit is defined as the amount of enzyme required to digest 1 µg of λ DNA in 1 hour at 37°C in a total reaction volume of 50 µl.