Attachment of an NMR-invisible solubility enhancement tag (INSET) using a sortase-mediated protein ligation methodAttachment of an NMR-invisible solubility enhancement tag (INSET) using a sortase-mediated protein ligation method

Structural highlights

2kbt is a 1 chain structure with sequence from Mus musculus, Streptococcus sp. 'group G' and Synthetic construct. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SPG1_STRSG Binds to the constant Fc region of IgG with high affinity.VAV_MOUSE Couples tyrosine kinase signals with the activation of the Rho/Rac GTPases, thus leading to cell differentiation and/or proliferation.

Evolutionary Conservation

 

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Sample solubility is essential for structural studies of proteins by solution NMR. Attachment of a solubility enhancement tag, such as GB1, MBP and thioredoxin, to a target protein has been used for this purpose. However, signal overlap of the tag with the target protein often made the spectral analysis difficult. Here we report a sortase-mediated protein ligation method to eliminate NMR signals arising from the tag by preparing the isotopically labeled target protein attached with the non-labeled GB1 tag at the C-terminus.

Attachment of an NMR-invisible solubility enhancement tag using a sortase-mediated protein ligation method.,Kobashigawa Y, Kumeta H, Ogura K, Inagaki F J Biomol NMR. 2009 Jan 13. PMID:19140010[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. Kobashigawa Y, Kumeta H, Ogura K, Inagaki F. Attachment of an NMR-invisible solubility enhancement tag using a sortase-mediated protein ligation method. J Biomol NMR. 2009 Jan 13. PMID:19140010 doi:10.1007/s10858-008-9296-5
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