7R7X

HLA-B*57:01 binding "QASQEVKNW" at 2.10Å 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', 'D']

2. Class I alpha
HLA-B*57:01

['A', 'C']

3. Peptide
QASQEVKNW

['E', 'F']

Species

Homo sapiens (Human)

Locus / Allele group

HLA-B / HLA-B*57

Publication

Molecular basis of differential HLA-restricted immune recognition of a highly networked viral peptide

Li, X.L., Singh, N.K., Ng, R., Lamothe-Molina, P.A., Shahinian, P., Xu, S.T., Tan, K.M., Zhang, A.Z., Piechocka-Trocha, A., Weber, J.K., Collins, D.R., Gaiha, G., Mbah, O.C.T., Huynh, T., Zhou, R.H., Walker, B.D., Wang, J.H.

Structure deposition and release

Deposited: 2021-06-25

Released: 2022-06-29

Revised: 2022-06-29

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: QASQEVKNW

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 GLN

TYR171

TYR159

TRP167

PHE33

MET5

TYR59

LEU163

GLU63

TYR7

P2 ALA

TYR7

TYR99

TYR9

ASN66

GLU63

MET67

MET45

TYR159

P3 SER

TYR159

ASN66

LEU156

TYR99

TYR9

P4 GLN

GLY62

ASN66

GLU63

P5 GLU

GLN155

LEU156

VAL152

P6 VAL

VAL152

THR73

P7 LYS

TRP133

VAL152

ASP114

LEU156

ASN77

TRP147

SER116

THR73

TYR74

P8 ASN

ASN77

TRP147

LYS146

THR73

THR143

P9 TRP

ILE95

ILE80

LYS146

TYR123

ASN77

TRP147

TYR118

SER116

ILE142

ALA117

TYR84

ALA81

TYR74

THR143

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

LEU163

TRP167

TYR171

MET5

TYR59

GLU63

ASN66

TYR7

B Pocket

ALA24

VAL34

MET45

GLU63

ASN66

MET67

TYR7

SER70

TYR9

TYR99

C Pocket

SER70

THR73

TYR74

TYR9

VAL97

D Pocket

ASP114

GLN155

LEU156

TYR159

LEU160

TYR99

E Pocket

ASP114

TRP147

VAL152

LEU156

VAL97

F Pocket

SER116

TYR123

THR143

LYS146

TRP147

ASN77

ILE80

ALA81

TYR84

ILE95

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-B57:01 IPD-IMGT/HLA* [ipd-imgt:HLA34051]	10 20 30 40 50 60 GSHSMRYFYTAMSRPGRGEPRFIAVGYVDDTQFVRFDSDAASPRMAPRAPWIEQEGPEYW 70 80 90 100 110 120 DGETRNMKASAQTYRENLRIALRYYNQSEAGSHIIQVMYGCDVGPDGRLLRGHDQSAYDG 130 140 150 160 170 180 KDYIALNEDLSSWTAADTAAQITQRKWEAARVAEQLRAYLEGLCVEWLRRYLENGKETLQ 190 200 210 220 230 240 RADPPKTHVTHHPISDHEATLRCWALGFYPAEITLTWQRDGEDQTQDTELVETRPAGDRT 250 260 270 FQKWAAVVVPSGEEQRYTCHVQHEGLPKPLTLRWEPHH

3. Peptide	QASQEVKNW

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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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/7r7x

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.