A Rhizavidin Monomer with Nearly Multimeric Avidin-Like Binding Stability Against Biotin Conjugates
Developing a monomeric form of an avidin‐like protein with highly stable biotin binding properties has been a major challenge in biotin‐avidin linking technology. Here we report a monomeric avidin‐like protein—enhanced monoavidin—with off‐rates almost comparable to those of multimeric avidin protein...
Saved in:
Published in | Angewandte Chemie (International ed.) Vol. 55; no. 10; pp. 3393 - 3397 |
---|---|
Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Germany
Blackwell Publishing Ltd
01.03.2016
Wiley Subscription Services, Inc |
Edition | International ed. in English |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Developing a monomeric form of an avidin‐like protein with highly stable biotin binding properties has been a major challenge in biotin‐avidin linking technology. Here we report a monomeric avidin‐like protein—enhanced monoavidin—with off‐rates almost comparable to those of multimeric avidin proteins against various biotin conjugates. Enhanced monoavidin (eMA) was developed from naturally dimeric rhizavidin by optimally maintaining protein rigidity during monomerization and additionally shielding the bound biotin by diverse engineering of the surface residues. eMA allowed the monovalent and nonperturbing labeling of head‐group‐biotinylated lipids in bilayer membranes. In addition, we fabricated an unprecedented 24‐meric avidin probe by fusing eMA to a multimeric cage protein. The 24‐meric avidin and eMA were utilized to demonstrate how artificial clustering of cell‐surface proteins greatly enhances the internalization rates of assembled proteins on live cells.
Extremely high binding stability against various biotin conjugates has been observed in a monomeric avidin‐like protein—enhanced monoavidin—that was developed from naturally dimeric rhizavidin by minimally disturbing the protein rigidity and additionally shielding the bound biotin. This stable monomeric biotin linker protein was further engineered to generate an unprecedented 24‐meric avidin probe. |
---|---|
Bibliography: | ArticleID:ANIE201510885 Ministry of Science, ICT & Future Planning - No. H-GUARD 2014M3A6B2060512 National Research Foundation of Korea ark:/67375/WNG-CQKJWSDL-9 NRF - No. 2011-0020322 NRF - No. 2013R1A1A2064140 istex:99085D3EC91475A451EE1A60E58C90DBD4518010 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1433-7851 1521-3773 |
DOI: | 10.1002/anie.201510885 |