1PGB: Protein G

Two crystal structures of the B1 immunoglobulin-binding domain of streptoccocal protein G and comparison with NMR. Determined by X-ray diffraction at 1.92 Å resolution. Released 30 Apr 1994.

Method
X-ray diffraction
Resolution
1.92 Å
Organism
Streptococcus sp. GX7805
Chains
1
Atoms
460
Mol. weight
6.2 kDa
Released
30 Apr 1994

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

Secondary structure: helices and β-sheets

1PGB contains 1 α-helix and 4 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: 1 helix, 4 β-strands

ElementResiduesLengthSheet
β-strand2-871
β-strand13-1971
α-helix23-3614
β-strand42-4651
β-strand51-5551

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Protein GAprotein56Streptococcus sp. GX7805P06654 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1PGB_1 PROTEIN G (chains A)
MTYKLILNGKTLKGETTTEAVDAATAEKVFKQYANDNGVDGEWTYDDATKTFTVTE

Primary citation

Two crystal structures of the B1 immunoglobulin-binding domain of streptococcal protein G and comparison with NMR. Gallagher, T., Alexander, P., Bryan, P. et al. Biochemistry (1994) 33:4721-4729. DOI 10.1021/bi00181a032 · PubMed

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

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