5HGA

HLA-A*24:02 binding "RFPLTFGW" at 2.20Å 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

1. Beta 2 microglobulin

['B', 'E']

2. Class I alpha
HLA-A*24:02

['A', 'D']

3. Peptide
RFPLTFGW

['C', 'F']

Species

Homo sapiens (Human)

Locus / Allele group

HLA-A / HLA-A*24

Publication

Effects of a Single Escape Mutation on T Cell and HIV-1 Co-adaptation.

Sun X, Shi Y, Akahoshi T, Fujiwara M, Gatanaga H, Schönbach C, Kuse N, Appay V, Gao GF, Oka S, Takiguchi M

Cell Rep (2016) 15, 2279-2291 [doi:10.1016/j.celrep.2016.05.017] [pubmed:27239036]

The mechanistic basis for the progressive accumulation of Y(135)F Nef mutant viruses in the HIV-1-infected population remains poorly understood. Y(135)F viruses carry the 2F mutation within RW8 and RF10, which are two HLA-A(∗)24:02-restricted superimposed Nef epitopes recognized by distinct and adaptable CD8(+) T cell responses. We combined comprehensive analysis of the T cell receptor repertoire and cross-reactive potential of wild-type or 2F RW8- and RF10-specific CD8(+) T cells with peptide-MHC complex stability and crystal structure studies. We find that, by affecting direct and water-mediated hydrogen bond networks within the peptide-MHC complex, the 2F mutation reduces both TCR and HLA binding. This suggests an advantage underlying the evolution of the 2F variant with decreased CD8(+) T cell efficacy. Our study provides a refined understanding of HIV-1 and CD8(+) T cell co-adaptation at the population level.

Structure deposition and release

Deposited: 2016-01-08

Released: 2016-06-08

Revised: 2019-12-18

Data provenance

Publication data retrieved from PDBe REST API8 and PMCe REST API9

Other structures from this publication

Peptide details

Length: Octamer (8 amino acids)

Sequence: RFPLTFGW

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 ARG

TYR159

TYR7

ARG170

TYR171

LYS66

PHE99

TYR59

GLU63

GLY167

ASP166

THR163

GLU55

MET5

P2 PHE

MET97

VAL67

ALA24

TYR159

TYR7

HIS70

MET45

GLU63

LYS66

PHE22

SER9

P3 PRO

PHE99

LYS66

GLN156

MET97

TYR159

TYR7

P4 LEU

TYR159

LYS66

HIS114

GLN156

GLN155

P5 THR

HIS114

GLN156

THR73

MET97

TYR116

HIS70

P6 PHE

THR73

TYR116

TRP147

ASN77

VAL152

GLN156

GLN155

P7 GLY

THR73

ASN77

ILE80

THR143

TRP147

LYS146

P8 TRP

ASN77

TYR118

ILE80

THR143

TYR116

ALA81

ALA117

TYR84

LEU95

ILE142

LYS146

TYR123

TRP147

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

ALA159

GLY163

ASP167

ARG171

SER5

GLU59

GLU63

GLY66

ARG7

B Pocket

ILE24

PHE34

ARG45

GLU63

GLY66

LYS67

ARG7

ALA70

PHE9

MET99

C Pocket

ALA70

GLN73

THR74

PHE9

GLN97

D Pocket

TYR114

GLU155

GLN156

ALA159

TYR160

MET99

E Pocket

TYR114

LYS147

HIS152

GLN156

GLN97

F Pocket

GLN116

ASP123

ILE143

ARG146

LYS147

GLU77

ARG80

ILE81

ARG84

THR95

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 WSFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM

2. Class I alpha HLA-A24:02 IPD-IMGT/HLA* [ipd-imgt:HLA34790]	10 20 30 40 50 60 MGSHSMRYFSTSVSRPGRGEPRFIAVGYVDDTQFVRFDSDAASQRMEPRAPWIEQEGPEY 70 80 90 100 110 120 WDEETGKVKAHSQTDRENLRIALRYYNQSEAGSHTLQMMFGCDVGSDGRFLRGYHQYAYD 130 140 150 160 170 180 GKDYIALKEDLRSWTAADMAAQITKRKWEAAHVAEQQRAYLEGTCVDGLRRYLENGKETL 190 200 210 220 230 240 QRTDPPKTHMTHHPISDHEATLRCWALGFYPAEITLTWQRDGEDQTQDTELVETRPAGDG 250 260 270 TFQKWAAVVVPSGEEQRYTCHVQHEGLPKPLTLRW

3. Peptide	RFPLTFGW

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

Data can be downloaded to your local machine from the links below.

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e.g. load http://www.histo.fyi/structures/downloads/1hhk_1_peptide.cif

or in the case of JSON formatted files to retrieve it and use it as part of notebooks such as Jupyter or GoogleColab.

Please take note of the data license. Using data from this site assumes that you have read and will comply with the license.

Complete structures

Aligned structures [cif]

Components

MHC Class I alpha chain [cif]

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

Peptide only [cif]

Derived data

Data for this page [json]

https://api.histo.fyi/v1/structures/5hga

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.