4IRS

Non-classical MHC Class I molecule CD1d with Natural Killer Alpha/Beta T cell receptor at 2.80Å resolution

Data provenance

Structure downloaded from PDB Europe using the Coordinate Server. Aligned to residues 1-180 of 1HHK2 using the CEALIGN3 function of PyMol4. Chain assigment using a Levenshtein distance5 method using data from the PDBe REST API6. Organism data from PDBe REST API. Data for both of these operations from the Molecules endpoint. Structure visualised with 3DMol7.

Complex type

Cd1d with nkt alpha beta tcr

1. Beta 2 microglobulin

['B']

2. CD1d

['A']

3. T cell receptor alpha
TRAV11

['C']

4. T cell receptor beta
TRBV13

['D']

Information on this structure on STCRdab.

Species

Mus musculus (Mouse)

Locus / Allele group

Non-classical MHC Class I molecule

Publication

Enhanced TCR Footprint by a Novel Glycolipid Increases NKT-Dependent Tumor Protection.

Aspeslagh S, Nemcovic M, Pauwels N, Venken K, Wang J, Van Calenbergh S, Zajonc DM, Elewaut D

J. Immunol. (2013) [doi:10.4049/jimmunol.1203134] [pubmed:23960235]

NKT cells, a unique type of regulatory T cells, respond to structurally diverse glycolipids presented by CD1d. Although it was previously thought that recognition of glycolipids such as α-galactosylceramide (α-GalCer) by the NKT cell TCR (NKTCR) obeys a key-lock principle, it is now clear this interaction is much more flexible. In this article, we report the structure-function analysis of a series of novel 6''-OH analogs of α-GalCer with more potent antitumor characteristics. Surprisingly, one of the novel carbamate analogs, α-GalCer-6''-(pyridin-4-yl)carbamate, formed novel interactions with the NKTCR. This interaction was associated with an extremely high level of Th1 polarization and superior antitumor responses. These data highlight the in vivo relevance of adding aromatic moieties to the 6''-OH position of the sugar and additionally show that judiciously chosen linkers are a promising strategy to generate strong Th1-polarizing glycolipids through increased binding either to CD1d or to NKTCR.

Structure deposition and release

Deposited: 2013-01-15

Released: 2013-09-04

Revised: 2020-07-29

Data provenance

Publication data retrieved from PDBe REST API8 and PMCe REST API9

Other structures from this publication

Chain sequences

1. Beta 2 microglobulin Beta 2 microglobulin	10 20 30 40 50 60 IQKTPQIQVYSRHPPENGKPNILNCYVTQFHPPHIEIQMLKNGKKIPKVEMSDMSFSKDW 70 80 90 SFYILAHTEFTPTETDTYACRVKHASMAEPKTVYWDRDM

2. CD1d CD1d	10 20 30 40 50 60 SEAQQKNYTFRCLQMSSFANRSWSRTDSVVWLGDLQTHRWSNDSATISFTKPWSQGKLSN 70 80 90 100 110 120 QQWEKLQHMFQVYRVSFTRDIQELVKMMSPKEDYPIEIQLSAGCEMYPGNASESFLHVAF 130 140 150 160 170 180 QGKYVVRFWGTSWQTVPGAPSWLDLPIKVLNADQGTSATVQMLLNDTCPLFVRGLLEAGK 190 200 210 220 230 240 SDLEKQEKPVAWLSSVPSSAHGHRQLVCHVSGFYPKPVWVMWMRGDQEQQGTHRGDFLPN 250 260 270 280 ADETWYLQATLDVEAGEEAGLACRVKHSSLGGQDIILYWHHHHHH

3. T cell receptor alpha T cell receptor alpha TRAV11	10 20 30 40 50 60 MKTQVEQSPQSLVVRQGENCVLQCNYSVTPDNHLRWFKQDTGKGLVSLTVLVDQKDKTSN 70 80 90 100 110 120 GRYSATLDKDAKHSTLHITATLLDDTATYICVVGDRGSALGRLHFGAGTQLIVIPDIQNP 130 140 150 160 170 180 DPAVYQLRDSKSSDKSVCLFTDFDSQTNVSQSKDSDVYITDKCVLDMRSMDFKSNSAVAW 190 200 SNKSDFACANAFNNSIIPEDTFFPSPESS

4. T cell receptor beta T cell receptor beta TRBV13	10 20 30 40 50 60 MEAAVTQSPRNKVAVTGGKVTLSCNQTNNHNNMYWYRQDTGHGLRLIHYSYGAGSTEKGD 70 80 90 100 110 120 IPDGYKASRPSQENFSLILELATPSQTSVYFCASGDEGYTQYFGPGTRLLVLEDLRNVTP 130 140 150 160 170 180 PKVSLFEPSKAEISHTQKATLVCLATGFYPDHVELSWWVNGKEVHSGVCTDPQPLKEQPA 190 200 210 220 230 240 LNDSRYSLSSRLRVSATFWQNPRNHFRCQVQFYGLSENDEWTQDRAKPVTQIVSAEAWGR A

Data provenance

Sequences are retrieved via the Uniprot method of the RSCB REST API. Sequences are then compared to those derived from the PDB file and matched against sequences retrieved from the IPD-IMGT/HLA database for human sequences, or the IPD-MHC database for other species. Mouse sequences are matched against FASTA files from Uniprot. Sequences for the mature extracellular protein (signal petide and cytoplasmic tail removed) are compared to identical length sequences from the datasources mentioned before using either exact matching or Levenshtein distance based matching.

Downloadable data

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Complete structures

Aligned structures [cif]

4IRS assembly 1

Components

MHC Class I alpha chain [cif]

4IRS assembly 1

MHC Class I antigen binding domain (alpha1/alpha2) [cif]

4IRS assembly 1

Derived data

Data for this page [json]

https://api.histo.fyi/v1/structures/4irs

Data license

The data above is made available under a Creative Commons CC-BY 4.0 license. This means you can copy, remix, transform, build upon and redistribute the material, but you must give appropriate credit, provide a link to the license, and indicate if changes were made.

If you use any data downloaded from this site in a publication, please cite 'https://www.histo.fyi/'. A preprint is in preparation.

Footnotes

Protein Data Bank Europe - Coordinate Server
1HHK - HLA-A*02:01 binding LLFGYPVYV at 2.5Å resolution - PDB entry for 1HHK
Protein structure alignment by incremental combinatorial extension (CE) of the optimal path. - PyMol CEALIGN Method - Publication
PyMol - PyMol.org/pymol
Levenshtein distance - Wikipedia entry
Protein Data Bank Europe REST API - Molecules endpoint
3Dmol.js: molecular visualization with WebGL - 3DMol.js - Publication
Protein Data Bank Europe REST API - Publication endpoint
PubMed Central Europe REST API - Articles endpoint

This work is licensed under a Creative Commons Attribution 4.0 International License.