1AB7: Barstar

NMR 15N relaxation and structural studies reveal conformational exchange in barstar C40/82A, 30 structures. Determined by solution NMR. Released 4 Sept 1997.

Method: Solution NMR
Organism: Bacillus amyloliquefaciens
Chains: 1
Atoms: 718
Mol. weight: 10.16 kDa
Released: 4 Sept 1997

Explore 1AB7 in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

1AB7 contains 4 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: 4 helices, 3 β-strands

Element	Residues	Length	Sheet
β-strand	2-5	4	1
α-helix	13-20	8
α-helix	21-25	5
α-helix	34-41	8
β-strand	49-53	5	1
α-helix	67-80	14
β-strand	84-87	4	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

>1AB7_1 BARSTAR (chains A)
KKAVINGEQIRSISDLHQTLKKELALPEYYGENLDALWDALTGWVEYPLVLEWRQFEQSK
QLTENGAESVLQVFREAKAEGADITIILS

Primary citation

NMR 15N relaxation and structural studies reveal slow conformational exchange in barstar C40/82A. Wong, K.B., Fersht, A.R., Freund, S.M. J Mol Biol (1997) 268:494-511. DOI 10.1006/jmbi.1997.0989 · 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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