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the claim

Type II restriction endonucleases cleave DNA at specific palindromic sequences.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Multiple studies and reviews confirm that Type II restriction endonucleases typically recognize specific short palindromic sequences and cleave the DNA within or near those sites.

The analysis

The retrieved papers consistently state that Type II restriction endonucleases recognize specific short sequences (frequently palindromic) of 4 to 8 base pairs and cleave the DNA at or near these sites. There are no papers contradicting this core biochemical definition.

Evidence for · 5
Recognition and Cleavage of DNA by Type‐II Restriction Endonucleases
Recorded source metadata

Alfred Pingoud, Albert Jeltsch. Recognition and Cleavage of DNA by Type‐II Restriction Endonucleases. 1997. https://doi.org/10.1111/j.1432-1033.1997.t01-6-00001.x

Paper 0 notes that Type II restriction endonucleases recognize short palindromic sequences 4-8 bp in length and cleave the DNA.

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More for · 4
Reactions of BglI and Other Type II Restriction Endonucleases with Discontinuous Recognition Sites*
Recorded source metadata

N. Gormley, A. J. Bath, S. Halford. Reactions of BglI and Other Type II Restriction Endonucleases with Discontinuous Recognition Sites*. 2000. https://doi.org/10.1074/jbc.275.10.6928

Paper 3 mentions that type II enzymes generally recognize continuous sequences of 4-8 base pairs, which are often palindromic.

Automata for DNA Splicing Languages with Palindromic and Non-Palindromic Restriction Enzymes using Grammars
Recorded source metadata

Wan Heng Fong, Nurul Izzaty Ismail, Nor Haniza Sarmin. Automata for DNA Splicing Languages with Palindromic and Non-Palindromic Restriction Enzymes using Grammars. 2019. https://doi.org/10.11113/matematika.v35.n4.1260

Paper 6 discusses palindromic and non-palindromic sequences recognized by restriction enzymes.

Type II restriction endonucleases: structure and mechanism.
Recorded source metadata

A Pingoud, M Fuxreiter, V Pingoud, W Wende. Type II restriction endonucleases: structure and mechanism.. 2005. https://doi.org/10.1007/s00018-004-4513-1

Paper 8 states that most type II enzymes cleave DNA at defined sites of 4-8 bp in length.

Structure and function of type II restriction endonucleases.
Recorded source metadata

A Pingoud, A Jeltsch. Structure and function of type II restriction endonucleases.. 2001. https://doi.org/10.1093/nar/29.18.3705

Paper 9 confirms that orthodox type II enzymes recognize short, usually palindromic sequences of 4-8 bp and cleave the DNA.

The paper trail · every fact has a biography
first checked01 Aug 2026
judged → SUPPORTED · 9001 Aug 2026
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