7X1C: Peptide VSFIEFVI

Crystal structure of peptide VSFIEFVI in complex with HLA-B5801. Determined by X-ray diffraction at 1.41 Å resolution. Released 3 May 2023.

Method: X-ray diffraction
Resolution: 1.41 Å
Organisms: Homo sapiens, synthetic construct
Chains: 3
Atoms: 3,691
Mol. weight: 44.89 kDa
Released: 3 May 2023

Explore 7X1C in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

7X1C 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.

Chain A: 12 helices, 19 β-strands

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	46-47	2	1
α-helix	50-52	3
α-helix	57-85	29
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	152-159	8
α-helix	160-164	5
α-helix	165-174	10
α-helix	176-179	4
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
α-helix	225-227	3
β-strand	229-230	2	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

Chain B: 2 helices, 11 β-strands

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
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

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
HLA-B	A	protein	277	Homo sapiens	A0A678ZMW1 (AlphaFold model)
Beta-2-microglobulin	B	protein	99	Homo sapiens	P61769 (AlphaFold model)
Val-ser-phe-ile-glu-phe-val-ile	C	protein	8	synthetic construct	P03203 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>7X1C_1 HLA-B (chains A)
GSHSMRYFYTAMSRPGRGEPRFIAVGYVDDTQFVRFDSDAASPRTEPRAPWIEQEGPEYW
DGETRNMKASAQTYRENLRIALRYYNQSEAGSHIIQRMYGCDLGPDGRLLRGHDQSAYDG
KDYIALNEDLSSWTAADTAAQITQRKWEAARVAEQLRAYLEGLCVEWLRRYLENGKETLQ
RADPPKTHVTHHPVSDHEATLRCWALGFYPAEITLTWQRDGEDQTQDTELVETRPAGDRT
FQKWAAVVVPSGEEQRYTCHVQHEGLPKPLTLRWEPS

Sequence of entity 2 (B), FASTA

>7X1C_2 Beta-2-microglobulin (chains B)
IQRTPKIQVYSRHPAENGKSNFLNCYVSGFHPSDIEVDLLKNGERIEKVEHSDLSFSKDW
SFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM

Sequence of entity 3 (C), FASTA

>7X1C_3 VAL-SER-PHE-ILE-GLU-PHE-VAL-ILE (chains C)
VSFIEFVI

Primary citation

Allopurinol non-covalently facilitates binding of unconventional peptides to HLA-B*58:01. Huan, X., Zhuo, N., Lee, H.Y. et al. Sci Rep (2023) 13:9373-9373. DOI 10.1038/s41598-023-36293-z · PubMed

Other PDB entries of the same protein (UniProt A0A678ZMW1 (AlphaFold model), which also has an AlphaFold model), best resolution first:

7X1B 1.4 Å, Crystal structure of peptide KAGQVVTI in complex with HLA-B5801

Browse structure collections

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