BMRB Entry 31304

Title:
K7 peptide structure in 98% H2SO4
Deposition date:
2026-04-19
Original release date:
2026-09-18
Authors:
Zhang, J.; Hong, M.
Citation:

Citation: Zhang, J.; Dregni, A.; Petkowski, J.; Seager, S.; Hong, M.. "Peptides adopt stable omega-loop structures in concentrated sulfuric acid "  Proc. Natl. Acad. Sci. U. S. A. 123, e2618039123-e2618039123 (2026).
PubMed: 42696554

Assembly members:

Assembly members:
entity_1, polymer, 7 residues, 743.977 Da.

Natural source:

Natural source:   Common Name: not available   Taxonomy ID: 32630   Superkingdom: not available   Kingdom: not available   Genus/species: synthetic construct

Experimental source:

Experimental source:   Production method: chemical synthesis

Entity Sequences (FASTA):

Entity Sequences (FASTA):
entity_1: AKLLKAV

Data sets:
Data typeCount
13C chemical shifts26
1H chemical shifts61

Additional metadata:

  • Assembly
  • Samples and Experiments
  • Software
  • Spectrometers
  • Hide all

Assembly:

Entity Assembly IDEntity NameEntity ID
1unit_11

Entities:

Entity 1, unit_1 7 residues - 743.977 Da.

1   ALALYSLEULEULYSALAVAL

Samples:

sample_1: K7 peptide 10.5 mg/mL; H2SO4 98 % w/w; dimethyl sulfone 1 mg/mL

sample_conditions_1: ionic strength: 18.4 mM; pH: 0; pressure: 1 atm; temperature: 293 K

Experiments:

NameSampleSample stateSample conditions
2D 1H-1H NOESYsample_1isotropicsample_conditions_1
2D 1H-13C HMQCsample_1isotropicsample_conditions_1
2D 1H-15N HSQCsample_1isotropicsample_conditions_1
3D HNHAsample_1isotropicsample_conditions_1

Software:

X-PLOR NIH, Schwieters, Kuszewski, Tjandra and Clore - structure calculation

CcpNmr Analysis, CCPN - chemical shift assignment

NMR spectrometers:

  • Bruker AVANCE III 800 MHz