ISDA: 2KEQ

Deposition Date 2009-02-02

Release Date 2009-05-19

Last Version Date 2024-05-29

Entry Detail

PDB ID:

2KEQ

Keywords:

SPLICING

Title:

Solution structure of DnaE intein from Nostoc punctiforme

Biological Source:

Source Organism(s):

Nostoc punctiforme PCC 73102 (Taxon ID: 63737)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

100

Conformers Submitted:

Selection Criteria:

target function

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:DNA polymerase III alpha subunit, Nucleic acid binding OB-fold tRNA/helicase-type
Gene (Uniprot):Npun_F4872, Npun_F5684
Mutagens:C1A
Chain IDs:A
Chain Length:139
Number of Molecules:1
Biological Source:Nostoc punctiforme PCC 73102

UniProt ID:B2J066,B2J821

Ligand Molecules

Primary Citation

Solution structure of DnaE intein from Nostoc punctiforme: structural basis for the design of a new split intein suitable for site-specific chemical modification.

Oeemig, J.S, Aranko, A.S, Djupsjobacka, J, Heinamaki, K, Iwai, H.Show

Febs Lett. 583 1451 1456 (2009)

PMID: 19344715 DOI: 10.1016/j.febslet.2009.03.058

Abstact

Naturally split DnaE intein from Nostoc punctiforme (Npu) has robust protein trans-splicing activity and high tolerance of sequence variations at the splicing junctions. We determined the solution structure of a single chain variant of NpuDnaE intein by NMR spectroscopy. Based on the NMR structure and the backbone dynamics of the single chain NpuDnaE intein, we designed a functional split variant of the NpuDnaE intein having a short C-terminal half (C-intein) composed of six residues. In vivo and in vitro protein ligation of model proteins by the newly designed split intein were demonstrated.

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Protein

Chemical

Disease

Primary Citation of related structures

Abstact

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