Restriction enzymes: commercial source

All endonucleases bellow are isoschizomers
Recognition sequence (?): GT'AC

AfaI

 Takara Shuzo Co. Ltd.

RsaI

 Minotech Biotechnology
 Fermentas AB
 SibEnzyme Ltd.
 Nippon Gene Co., Ltd.
 Roche Applied Science
 New England Biolabs
 CHIMERx
 Promega Corporation
 Sigma Chemical Corporationn
 MRC-Holland
 EURx Ltd.