Biological Magnetic Resonance Data Bank

A Repository for Data from NMR Spectroscopy on Proteins, Peptides, Nucleic Acids, and other Biomolecules
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BMRB Entry 18938

Title: BTD-2[3,4]   PubMed: 23430740

Authors: Conibear, Anne; Rosengren, K. Johan; Daly, Norelle; Troiera Henriques, Sonia; Craik, David

Citation: Conibear, Anne; Rosengren, K. Johan; Daly, Norelle; Henriques, Sonia Troeira; Craik, David. "The Cyclic Cystine Ladder in -Defensins Is Important for Structure and Stability, but Not Antibacterial Activity."  J. Biol. Chem. 288, 10830-10840 (2013).

Assembly members:
BTD-2[3,4], polymer, 18 residues, 2090.649 Da.

Natural source:   Common Name: Olive baboon   Taxonomy ID: 9555   Superkingdom: Eukaryota   Kingdom: Metazoa   Genus/species: Papio anubis

Experimental source:   Production method: chemical synthesis

Entity Sequences (FASTA):

Data sets:
Data typeCount
13C chemical shifts53
1H chemical shifts119

Additional metadata:

  • Assembly
  • Samples and Experiments
  • Software
  • Spectrometers
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Entity Assembly IDEntity NameEntity ID


Entity 1, BTD-2[3,4] 18 residues - 2090.649 Da.

Acyclic analogue of the theta-defensin BTD-2. Residues joined by disulfide bonds are 2-11, 4-9, and 13-18.



sample_1: BTD-2[3,4] 0.8 mM; DSS 10 ug; H2O 90%; D2O 10%

sample_2: BTD-2[3,4] 0.8 mM; DSS 10 ug; D2O 100%

sample_conditions_1: pH: 4; pressure: 1 atm; temperature: 298 K


NameSampleSample stateSample conditions
2D 1H-1H TOCSYsample_1isotropicsample_conditions_1
2D 1H-1H NOESYsample_1isotropicsample_conditions_1
2D 1H-13C HSQCsample_2isotropicsample_conditions_1
2D DQF-COSYsample_1isotropicsample_conditions_1
2D 1H-1H ECOSYsample_2isotropicsample_conditions_1


CcpNMR v2.1, CCPN - chemical shift assignment, data analysis, peak picking

TOPSPIN v2.1, Bruker Biospin - collection, processing

CYANA v3.0, Guntert, Mumenthaler and Wuthrich - structure solution

CNS v2.1, Brunger, Adams, Clore, Gros, Nilges and Read - refinement

NMR spectrometers:

  • Bruker Avance 500 MHz
  • Bruker Avance 600 MHz

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