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DECAMER-LIKE CONFORMATION OF A NANO-PEPTIDE BOUND TO HLA-B3501 DUE TO NONSTANDARD POSITIONING OF THE C-TERMINUS

X-ray diffraction
3.2Å resolution
PDB entry 1a9b coloured by chain, front view.
PDB entry 1a9b coloured by chain, side view.
PDB entry 1a9b coloured by chain, top view.
Source organism: Homo sapiens
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Major Histocompatibility Complex
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Multimeric state: hetero trimer
Accessible surface area: 18572.8 Å2
Buried surface area: 4463.99 Å2
Dissociation area: 860.53 Å2
Dissociation energy (ΔGdiss): 10.44 kcal/mol
Dissociation entropy (TΔSdiss): 7.31 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135176
Assembly 2
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Assembly Name: Major Histocompatibility Complex
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Multimeric state: hetero trimer
Accessible surface area: 18568.22 Å2
Buried surface area: 4458.95 Å2
Dissociation area: 1,368.84 Å2
Dissociation energy (ΔGdiss): 10.45 kcal/mol
Dissociation entropy (TΔSdiss): 12.1 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-135176

Macromolecules

HLA class I histocompatibility antigen, B alpha chain
Chains: A, D
Length: 277 amino acids
Theoretical weight: 32.03 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P01889 (Residues: 25-301; Coverage: 82%)
Gene names: HLA-B, HLAB
Pfam:
InterPro:
CATH:
SCOP:
HLA class I histocompatibility antigen, B alpha chain in PDB entry 1a9b, assembly 1, front view.
HLA class I histocompatibility antigen, B alpha chain in PDB entry 1a9b, assembly 1, side view.
HLA class I histocompatibility antigen, B alpha chain in PDB entry 1a9b, assembly 1, top view.
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Beta-2-microglobulin
Chains: B, E
Length: 100 amino acids
Theoretical weight: 11.88 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P61769 (Residues: 21-119; Coverage: 100%)
Gene names: B2M, CDABP0092, HDCMA22P
Pfam: Immunoglobulin C1-set domain
InterPro:
CATH: Immunoglobulins
SCOP: C1 set domains (antibody constant domain-like)
Beta-2-microglobulin in PDB entry 1a9b, assembly 1, front view.
Beta-2-microglobulin in PDB entry 1a9b, assembly 1, side view.
Beta-2-microglobulin in PDB entry 1a9b, assembly 1, top view.
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PEPTIDE LPPLDITPY
Chains: C, F
Length: 9 amino acids
Theoretical weight: 1.03 KDa
PEPTIDE LPPLDITPY in PDB entry 1a9b, assembly 1, front view.
PEPTIDE LPPLDITPY in PDB entry 1a9b, assembly 1, side view.
PEPTIDE LPPLDITPY in PDB entry 1a9b, assembly 1, top view.
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