ISDA

Entry Detail

PDB ID:

7BNW

Keywords:

IMMUNE SYSTEM

Title:

Llama nanobody nb18 raised against GldL from Flavobacterium jonhsoniae

Biological Source:

Source Organism:

Lama glama

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2021-01-22

Release Date:

2021-05-26

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.59 Å

R-Value Free:

0.24

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 65

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Macromolecular Entities

Polymer Type:polypeptide(L)
Description:nanobody nb18
Chain IDs:A, B, C, D
Chain Length:129
Number of Molecules:4
Biological Source:Lama glama

Primary Citation

Crystal structures of two camelid nanobodies raised against GldL, a component of the type IX secretion system from Flavobacterium johnsoniae.

Trinh, T.T.N, Gaubert, A, Melani, P, Cambillau, C, Roussel, A, Leone, P.Show

Acta Crystallogr.,Sect.F 77 171 176 (2021)

PMID: 34100775 DOI: 10.1107/S2053230X21005185

Abstact

GldL is an inner-membrane protein that is essential for the function of the type IX secretion system (T9SS) in Flavobacterium johnsoniae. The complex that it forms with GldM is supposed to act as a new rotary motor involved in the gliding motility of the bacterium. In the context of structural studies of GldL to gain information on the assembly and function of the T9SS, two camelid nanobodies were selected, produced and purified. Their interaction with the cytoplasmic domain of GldL was characterized and their crystal structures were solved. These nanobodies will be used as crystallization chaperones to help in the crystallization of the cytoplasmic domain of GldL and could also help to solve the structure of the complex using molecular replacement.

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