PMID- 18029605 OWN - NLM STAT- MEDLINE DCOM- 20080428 LR - 20071121 IS - 1746-8272 (Electronic) IS - 0261-3166 (Linking) IP - 51 DP - 2007 TI - Aptameric enzyme subunit for homogeneous protein sensing. PG - 99-100 AB - We have developed an aptameric enzyme subunit (AES) for protein sensing. AES is composed of an enzyme-inhibiting aptamer and a target molecule-binding aptamer and it can allosterically control the corresponding enzyme activity by binding target molecules. Here, we applied AES to immunoglobulin E (IgE) sensing. We split the thrombin-inhibiting aptamer into two oligonucleotides and then connected IgE-binding aptamer and its complementary strand to the split thrombin-inhibiting aptamer. The hybrid of these two oligonucleotides inhibited thrombin enzymatic activity and it was decreased in the presence of IgE. We were able to detect IgE by using the AES in homogeneous assay and detection limit was 250 nM. FAU - Yoshida, Wataru AU - Yoshida W AD - Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture & Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan. FAU - Sode, Koji AU - Sode K FAU - Ikebukuro, Kazunori AU - Ikebukuro K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Nucleic Acids Symp Ser (Oxf) JT - Nucleic acids symposium series (2004) JID - 101259965 RN - 0 (Aptamers, Nucleotide) RN - 145563-68-4 (thrombin aptamer) RN - 37341-29-0 (Immunoglobulin E) RN - EC 3.4.21.5 (Thrombin) SB - IM MH - Aptamers, Nucleotide/*chemistry MH - Base Sequence MH - Immunoglobulin E/*analysis MH - Molecular Sequence Data MH - Thrombin/antagonists & inhibitors EDAT- 2007/11/22 09:00 MHDA- 2008/04/29 09:00 CRDT- 2007/11/22 09:00 PHST- 2007/11/22 09:00 [pubmed] PHST- 2008/04/29 09:00 [medline] PHST- 2007/11/22 09:00 [entrez] AID - 51/1/99 [pii] AID - 10.1093/nass/nrm050 [doi] PST - ppublish SO - Nucleic Acids Symp Ser (Oxf). 2007;(51):99-100. doi: 10.1093/nass/nrm050.