5DRX | pdb_00005drx

Experimental Data Snapshot

Starting Model: other
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wwPDB Validation 3D Report Full Report

This is version 1.3 of the entry. See complete history.

(2017) Nat Commun 8: 15746-15746

PubMed Abstract:
Cell-autonomous B-cell receptor (BcR)-mediated signalling is a hallmark feature of the neoplastic B lymphocytes in chronic lymphocytic leukaemia (CLL). Here we elucidate the structural basis of autonomous activation of CLL B cells, showing that BcR immunoglobulins initiate intracellular signalling through homotypic interactions between epitopes that are specific for each subgroup of patients with homogeneous clinicobiological profiles. The molecular details of the BcR-BcR interactions apparently dictate the clinical course of disease, with stronger affinities and longer half-lives in indolent cases, and weaker, short-lived contacts mediating the aggressive ones. The diversity of homotypic BcR contacts leading to cell-autonomous signalling reconciles the existence of a shared pathogenic mechanism with the biological and clinical heterogeneity of CLL and offers opportunities for innovative treatment strategies.

Organizational Affiliation

Biocrystallography Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, via Olgettina 58, 20132 Milan, Italy.

Macromolecule Content

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CLL240 heavy chain (VH and CH1 domains)	A [auth H], C [auth A]	228	Homo sapiens	Mutation(s): 0 Gene Names: IGHV4-34, IGHJ6, IGHG1*03

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| 3D Structure

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CLL240 BCR light chain	B [auth L], D [auth B]	221	Homo sapiens	Mutation(s): 0 Gene Names: IGKV2-30, IGKJ2, IGKC*01

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain E [auth H] SDF format, chain G [auth L] SDF format, chain H [auth A] SDF format, chain I [auth B] SDF format, chain J [auth B] SDF format, chain F [auth L] MOL2 format, chain E [auth H] MOL2 format, chain G [auth L] MOL2 format, chain H [auth A] MOL2 format, chain I [auth B] MOL2 format, chain J [auth B] MOL2 format, chain F [auth L] mmCIF format, chain E [auth H] mmCIF format, chain G [auth L] mmCIF format, chain H [auth A] mmCIF format, chain I [auth B] mmCIF format, chain J [auth B] mmCIF format, chain F [auth L]	E [auth H] F [auth L] G [auth L] H [auth A] I [auth B] E [auth H], F [auth L], G [auth L], H [auth A], I [auth B], J [auth B]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain E [auth H] Focus chain F [auth L] Focus chain G [auth L] Focus chain H [auth A] Focus chain I [auth B] Focus chain J [auth B] Interactions & Density Focus chain E [auth H] Focus chain F [auth L] Focus chain G [auth L] Focus chain H [auth A] Focus chain I [auth B] Focus chain J [auth B]