Structures of HLA-B8E76C loaded with long peptides reveal novel features at the N-terminus of the groove. Determined by X-ray diffraction at 1.13 Å resolution. Released 2 Aug 2023.
Explore 8E2Z in 3D Show helices and sheets RCSB PDB PDBe
8E2Z contains 14 α-helices and 30 β-strands across 2 chains. Residue ranges use author residue numbering, as in the PDB file, from PDBe. To see them in 3D, choose the Cartoon representation with Secondary structure coloring: helices, sheets and coils get different colors.
| Element | Residues | Length | Sheet |
|---|---|---|---|
| β-strand | 3-12 | 10 | 1 |
| α-helix | 20 | 1 | |
| β-strand | 21-28 | 8 | 1 |
| β-strand | 31-37 | 7 | 1 |
| β-strand | 48 | 1 | 1 |
| α-helix | 61-84 | 24 | |
| β-strand | 94-103 | 10 | 1 |
| β-strand | 109-118 | 10 | 1 |
| β-strand | 121-126 | 6 | 1 |
| β-strand | 133-135 | 3 | 1 |
| α-helix | 138-149 | 12 | |
| α-helix | 152-158 | 7 | |
| α-helix | 159-164 | 6 | |
| α-helix | 165-174 | 10 | |
| α-helix | 176-179 | 4 | |
| α-helix | 182 | 1 | |
| β-strand | 183 | 1 | 2 |
| α-helix | 184-185 | 2 | |
| β-strand | 186-193 | 8 | 3 |
| β-strand | 198-208 | 11 | 3 |
| β-strand | 209 | 1 | 2 |
| β-strand | 214-219 | 6 | 4 |
| β-strand | 222-223 | 2 | 4 |
| β-strand | 228-230 | 3 | 3 |
| α-helix | 231-233 | 3 | |
| β-strand | 234-235 | 2 | 3 |
| β-strand | 241-250 | 10 | 3 |
| α-helix | 254-256 | 3 | |
| β-strand | 257-262 | 6 | 4 |
| β-strand | 270-272 | 3 | 4 |
| Element | Residues | Length | Sheet |
|---|---|---|---|
| β-strand | 3 | 1 | 5 |
| α-helix | 4-5 | 2 | |
| β-strand | 6-11 | 6 | 6 |
| β-strand | 21-30 | 10 | 6 |
| β-strand | 31 | 1 | 5 |
| β-strand | 36-41 | 6 | 7 |
| β-strand | 44-45 | 2 | 7 |
| α-helix | 46 | 1 | |
| β-strand | 50-51 | 2 | 6 |
| α-helix | 52-54 | 3 | |
| β-strand | 55-56 | 2 | 6 |
| β-strand | 62-70 | 9 | 6 |
| β-strand | 78-83 | 6 | 7 |
| β-strand | 91-94 | 4 | 7 |
| Molecule | Chains | Type | Length | Organism | UniProt |
|---|---|---|---|---|---|
| MHC class I protein (Fragment) | A | protein | 276 | Homo sapiens | Q5SS57 (AlphaFold model) |
| Beta-2-microglobulin | B | protein | 100 | Homo sapiens | P61769 (AlphaFold model) |
| Ala-phe-ala-lys-lys-lys-tyr-cys-leu | C | protein | 20 | Human immunodeficiency virus 1 |
>8E2Z_1 MHC class I protein (Fragment) (chains A) GSHSMRYFDTAMSRPGRGEPRFISVGYVDDTQFVRFDSDAASPREEPRAPWIEQEGPEYW DRNTQIFKTNTQTDRCSLRNLRGYYNQSEAGSHTLQSMYGCDVGPDGRLLRGHNQYAYDG KDYIALNEDLRSWTAADTAAQITQRKWEAARVAEQDRAYLEGTCVEWLRRYLENGKDTLE RADPPKTHVTHHPISDHEATLRCWALGFYPAEITLTWQRDGEDQTQDTELVETRPAGDRT FQKWAAVVVPSGEEQRYTCHVQHEGLPKPLTLRWEP
>8E2Z_2 Beta-2-microglobulin (chains B) MIQRTPKIQVYSRHPAENGKSNFLNCYVSGFHPSDIEVDLLKNGERIEKVEHSDLSFSKD WSFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM
>8E2Z_3 ALA-PHE-ALA-LYS-LYS-LYS-TYR-CYS-LEU (chains C) RARARARARARAFAKKKYCL
Crystal structures of MHC class I complexes reveal the elusive intermediate conformations explored during peptide editing. Li, L., Peng, X., Batliwala, M. et al. Nat Commun (2023) 14:5020-5020. DOI 10.1038/s41467-023-40736-6 · PubMed
Other PDB entries of the same protein (UniProt Q5SS57 (AlphaFold model), which also has an AlphaFold model), best resolution first:
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