4KGT: PDB entry 4KGT

Backbone Modifications in the Protein GB1 Turns: Aib10, D-Pro47. Determined by X-ray diffraction at 2.0 Å resolution. Released 4 Sept 2013.

Method: X-ray diffraction
Resolution: 2.0 Å
Chains: 2
Atoms: 913
Mol. weight: 11.67 kDa
Released: 4 Sept 2013

Explore 4KGT in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

4KGT contains 2 α-helices and 8 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: 1 helix, 4 β-strands

Element	Residues	Length	Sheet
β-strand	2-9	8	1
β-strand	12-19	8	1
α-helix	23-36	14
β-strand	42-46	5	1
β-strand	49-53	5	1

Chain B: 1 helix, 4 β-strands

Element	Residues	Length	Sheet
β-strand	2-9	8	1
β-strand	12-19	8	1
α-helix	23-36	14
β-strand	43-46	4	1
β-strand	49-52	4	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Streptococcal Protein GB1 Backbone Modified Variant: Aib10, D-Pro47	A, B	protein	55		P06654 (AlphaFold model)

Sequence of entity 1 (A, B), FASTA

>4KGT_1 Streptococcal Protein GB1 Backbone Modified Variant: Aib10, D-Pro47 (chains A, B)
DTYKLILNGAGLKGETTTEAVDAATAEKVFKQYANDNGVDGEWTYDPGTFTVTEX

Primary citation

Protein-like Tertiary Folding Behavior from Heterogeneous Backbones. Reinert, Z.E., Lengyel, G.A., Horne, W.S. J Am Chem Soc (2013) 135:12528-12531. DOI 10.1021/ja405422v · PubMed

Other PDB entries of the same protein (UniProt P06654 (AlphaFold model), which also has an AlphaFold model), best resolution first:

1IGD 1.1 Å, The third IgG-binding domain from streptococcal protein G: an analysis by X-ray…
2IGD 1.1 Å, Anisotropic structure of protein G IgG-binding domain III at 1.1 Å resolution
3MP9 1.2 Å, Structure of Streptococcal protein G B1 domain at pH 3.0
6CNE 1.2 Å, Selenomethionine variant (V29SeM) of protein GB1
1PGX 1.66 Å, The 1.66 Å X-ray structure of the B2 immunoglobulin-binding domain of streptococcal…
6L9D 1.73 Å, X-ray structure of synthetic GB1 domain with mutations K10(DVA), T11S
6L91 1.84 Å, X-ray structure of synthetic GB1 domain with the mutation K10(DVA).
6LJI 1.84 Å, X-ray structure of synthetic GB1 domain with mutations K10(DVA), T11V
1PGB 1.92 Å, Two crystal structures of the B1 immunoglobulin-binding domain of streptoccocal protein…
4KGS 1.95 Å, Backbone Modifications in the Protein GB1 Loops: beta-3-Val21, beta-3-Asp40
6L9B 1.95 Å, X-ray structure of synthetic GB1 domain with mutations K10(DVA), T11A
1EM7 2.0 Å, Helix variant of the B1 domain from streptococcal protein G

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