1BTB: Barstar

Three-dimensional solution structure and 13C assignments of barstar using nuclear magnetic resonance spectroscopy. Determined by solution NMR. Released 31 Jul 1994.

Method: Solution NMR
Organism: Bacillus amyloliquefaciens
Chains: 1
Atoms: 720
Mol. weight: 10.22 kDa
Released: 31 Jul 1994

Explore 1BTB in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1BTB contains 5 α-helices and 3 β-strands across 1 chain. 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: 5 helices, 3 β-strands

Element	Residues	Length	Sheet
β-strand	2-6	5	1
α-helix	13-20	8
α-helix	21-25	5
α-helix	34-41	8
β-strand	49-54	6	1
α-helix	58-61	4
α-helix	67-79	13
β-strand	84-88	5	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Barstar	A	protein	89	Bacillus amyloliquefaciens	P11540 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>1BTB_1 BARSTAR (chains A)
KKAVINGEQIRSISDLHQTLKKELALPEYYGENLDALWDCLTGWVEYPLVLEWRQFEQSK
QLTENGAESVLQVFREAKAEGCDITIILS

Primary citation

Three-dimensional solution structure and 13C assignments of barstar using nuclear magnetic resonance spectroscopy. Lubienski, M.J., Bycroft, M., Freund, S.M. et al. Biochemistry (1994) 33:8866-8877. DOI 10.1021/bi00196a003 · PubMed

Other PDB entries of the same protein (UniProt P11540 (AlphaFold model), which also has an AlphaFold model), best resolution first:

6PQK 1.2 Å, Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/S59C/A67C/C82A
2ZA4 1.58 Å, Crystal Structural Analysis of Barnase-barstar Complex
1AY7 1.7 Å, Ribonuclease sa complex with barstar
1B2S 1.82 Å, Structural response to mutation at a protein-protein interface
1X1Y 1.9 Å, Water-mediate interaction at aprotein-protein interface
1BRS 2.0 Å, Protein-protein recognition: crystal structural analysis of a barnase-barstar complex at…
2HXX 2.0 Å, Aminotryptophan Barstar
1B27 2.1 Å, Structural response to mutation at a protein-protein interface
1B2U 2.1 Å, Structural response to mutation at a protein-protein interface
1X1W 2.1 Å, Water-mediate interaction at aprotein-protein interface
3DA7 2.25 Å, A conformationally strained, circular permutant of barnase
7MRX 2.29 Å, Cryogenic crystal structure of barnase A43C/S80C bound to barstar C40A/C82A

Browse structure collections

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