1AO7

HLA-A*02:01 presenting "LLFGYPVYV" to Alpha/Beta T cell receptor at 2.60Å 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

Class i with peptide and alpha beta tcr

1. Beta 2 microglobulin

['B']

2. Class I alpha
HLA-A*02:01

['A']

3. Peptide
LLFGYPVYV

['C']

4. T cell receptor alpha
TRAV12

['D']

5. T cell receptor beta
TRBV6

['E']

Information on this structure on STCRdab.

Species

Homo sapiens (Human)

Locus / Allele group

HLA-A / HLA-A*02

Publication

Structure of the complex between human T-cell receptor, viral peptide and HLA-A2.

Garboczi DN, Ghosh P, Utz U, Fan QR, Biddison WE, Wiley DC

Nature (1996) 384, 134-41 [doi:10.1038/384134a0] [pubmed:8906788]

Recognition by a T-cell antigen receptor (TCR) of peptide complexed with a major histocompatibility complex (MHC) molecule occurs through variable loops in the TCR structure which bury almost all the available peptide and a much larger area of the MHC molecule. The TCR fits diagonally across the MHC peptide-binding site in a surface feature common to all class I and class II MHC molecules, providing evidence that the nature of binding is general. A broadly applicable binding mode has implications for the mechanism of repertoire selection and the magnitude of alloreactions.

Structure deposition and release

Deposited: 1997-07-21

Released: 1997-09-17

Revised: 2016-05-25

Data provenance

Publication data retrieved from PDBe REST API8 and PMCe REST API9

Other structures from this publication

Peptide details

Length: Nonamer (9 amino acids)

Sequence: LLFGYPVYV

Interactive view

Cutaway side view (static)

Surface top view (static - coloured by atom property)

Cutaway top view (static)

Data provenance

MHC:peptide complexes are visualised using PyMol. The peptide is superimposed on a consistent cutaway slice of the MHC binding cleft (displayed as a grey mesh) which best indicates the binding pockets for the P1/P5/PC positions (side view - pockets A, E, F) and for the P2/P3/PC-2 positions (top view - pockets B, C, D). In some cases peptides will use a different pocket for a specific peptide position (atypical anchoring). On some structures the peptide may appear to sterically clash with a pocket. This is an artefact of picking a standardised slice of the cleft and overlaying the peptide.

Peptide neighbours

P1 LEU

TRP167

TYR159

TYR59

TYR7

LYS66

MET5

TYR171

THR163

GLU63

PHE33

P2 LEU

GLU63

MET45

TYR99

HIS70

VAL67

TYR159

TYR7

LYS66

PHE9

P3 PHE

VAL152

TYR159

LEU156

LYS66

HIS70

TYR99

GLN155

P4 GLY

LYS66

P5 TYR

GLN155

VAL152

P6 PRO

ALA69

ARG97

THR73

HIS70

P7 VAL

ASP77

THR73

ARG97

VAL152

TRP147

ALA150

P8 TYR

GLN72

LYS146

THR73

VAL76

ASP77

TRP147

P9 VAL

TYR116

TRP147

LEU81

THR143

TYR123

THR142

ASP77

THR80

TYR84

LYS146

Colour key

Aromatic Hydrophobic Acidic Basic Neutral/polar

Data provenance

Neighbours are calculated by finding residues with atoms within 5Å of each other using BioPython Neighboursearch module. The list of neighbours is then sorted and filtered to inlcude only neighbours where between the peptide and the MHC Class I alpha chain.

Colours selected to match the YRB scheme. [https://www.frontiersin.org/articles/10.3389/fmolb.2015.00056/full]

Binding cleft pockets

Peptide sidechain binding pockets (static)

Peptide terminii and backbone binding residues (static)

A Pocket

TYR159

THR163

TRP167

TYR171

MET5

TYR59

GLU63

LYS66

TYR7

B Pocket

ALA24

VAL34

MET45

GLU63

LYS66

VAL67

TYR7

HIS70

PHE9

TYR99

C Pocket

HIS70

THR73

HIS74

PHE9

ARG97

D Pocket

HIS114

GLN155

LEU156

TYR159

LEU160

TYR99

E Pocket

HIS114

TRP147

VAL152

LEU156

ARG97

F Pocket

TYR116

TYR123

THR143

LYS146

TRP147

ASP77

THR80

LEU81

TYR84

VAL95

Colour key

Binds N-terminus Binds P1 backbone Binds P2 backbone Binds PC-1 backbone Binds C-terminus

Data provenance

N-/C-terminus and peptide backbone binding residues are assigned according to previously published information and pockets are assigned according to an adaptation of a previously published set of residues. All numbering is currently that of the 'canonical' structures of human and mouse MHC Class I molecules.

Chain sequences

1. Beta 2 microglobulin Beta 2 microglobulin	10 20 30 40 50 60 MIQRTPKIQVYSRHPAENGKSNFLNCYVSGFHPSDIEVDLLKNGERIEKVEHSDLSFSKD 70 80 90 WSFYLLYCTEFTPTEKDEYACRVNHVTLSQPCIVKWDRDM

2. Class I alpha HLA-A02:01 IPD-IMGT/HLA* [ipd-imgt:HLA35266]	10 20 30 40 50 60 GSHSMRYFFTSVSRPGRGEPRFIAVGYVDDTQFVRFDSDAASQRMEPRAPWIEQEGPEYW 70 80 90 100 110 120 DGETRKVKAHSQTHRVDLGTLRGYYNQSEAGSHTVQRMYGCDVGSDWRFLRGYHQYAYDG 130 140 150 160 170 180 KDYIALKEDLRSWTAADMAAQTTKHKWEAAHVAEQLRAYLEGTCVEWLRRYLENGKETLQ 190 200 210 220 230 240 RTDAPKTHMTHHAVSDHEATLRCWALSFYPAEITLTWQRDGEDQTQDTELVETRPAGDGT 250 260 270 FQKWAAVVVPSGQEQRYTCHVQHEGLPKPLTLRWE

3. Peptide	LLFGYPVYV

4. T cell receptor alpha T cell receptor alpha TRAV12	10 20 30 40 50 60 KEVEQNSGPLSVPEGAIASLNCTYSDRGSQSFFWYRQYSGKSPELIMSIYSNGDKEDGRF 70 80 90 100 110 120 TAQLNKASQYVSLLIRDSQPSDSATYLCAVTTDSWGKLQFGAGTQVVVTPDIQNPDPAVY 130 140 150 160 170 180 QLRDSKSSDKSVCLFTDFDSQTNVSQSKDSDVYITDKTVLDMRSMDFKSNSAVAWSNKSD 190 200 FACANAFNNSIIPEDTFFPSPESS

5. T cell receptor beta T cell receptor beta TRBV6	10 20 30 40 50 60 NAGVTQTPKFQVLKTGQSMTLQCAQDMNHEYMSWYRQDPGMGLRLIHYSVGAGITDQGEV 70 80 90 100 110 120 PNGYNVSRSTTEDFPLRLLSAAPSQTSVYFCASRPGLAGGRPEQYFGPGTRLTVTEDLKN 130 140 150 160 170 180 VFPPEVAVFEPSEAEISHTQKATLVCLATGFYPDHVELSWWVNGKEVHSGVSTDPQPLKE 190 200 210 220 230 240 QPALNDSRYALSSRLRVSATFWQNPRNHFRCQVQFYGLSENDEWTQDRAKPVTQIVSAEA WGRAD

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]

1AO7 assembly 1

Components

MHC Class I alpha chain [cif]

1AO7 assembly 1

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

1AO7 assembly 1

Peptide only [cif]

1AO7 assembly 1

Derived data

Data for this page [json]

https://api.histo.fyi/v1/structures/1ao7

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.