I-ApeI, a novel intron-encoded LAGLIDADG homing endonuclease from the archaeon, Aeropyrum pernix K1
I-ApeI, a novel intron-encoded LAGLIDADG homing endonuclease from the archaeon, Aeropyrum pernix K1
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I-ApeI,一种来自古细菌 Aeropyrum pernix K1 的新型内含子编码 LAGLIDADG 归巢核酸内切酶
作者:
N. Nomura;Yayoi Morinaga;N. Shirai;Y. Sako
Over 50 introns have been reported in archaeal rRNA genes (rDNAs), a subset of which nests putative homing endonuclease (HEase) genes. Here, we report the identification and characterization of a novel archaeal LAGLIDADG-type HEase, I-ApeKI [corrected], encoded by the ApeK1.S908 intron within the 16S rDNA of Aeropyrum pernix K1. I-ApeKI [corrected] consists of 222 amino acids and harbors two LAGLIDADG-like sequences. It recognizes the 20 bp non-palindromic sequence 5'-GCAAGGCTGAAAC downward arrowTTAAAGG and cleaves target DNA to produce protruding tetranucleotide 3' ends. Either Mn2+ or Co2+ can be substituted for Mg2+ as a cofactor in the cleavage reaction. Of the 20 bases within the minimal recognition site, 7 are essential for cleavage and are located at positions proximal to the cleavage sites.
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影响因子:
5.6
作者:
Sussman, D;Chadsey, M;Seligman, LM
通讯作者:
Seligman, LM
DOI:
10.1093/nar/gkh618
发表时间:
2004
期刊:
Nucleic acids research.
影响因子:
--
作者:
Silva,GeorgeH;Belfort,Marlene
通讯作者:
Belfort,Marlene
影响因子:
5.6
作者:
Chevalier, B;Turmel, M;Stoddard, BL
通讯作者:
Stoddard, BL
影响因子:
16
作者:
Jurica, NS;Monnat, RJ;Stoddard, BL
通讯作者:
Stoddard, BL
影响因子:
56.9
作者:
Rong, YS;Golic, KG
通讯作者:
Golic, KG