1IGD: Protein G

The third IgG-binding domain from streptococcal protein G: an analysis by X-ray crystallography of the structure alone and in a complex with FAB. Determined by X-ray diffraction at 1.1 Å resolution. Released 1 Nov 1994.

Method
X-ray diffraction
Resolution
1.1 Å
Organism
Streptococcus sp. G148
Chains
1
Atoms
588
Mol. weight
6.66 kDa
Released
1 Nov 1994

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

Secondary structure: helices and β-sheets

1IGD contains 2 α-helices 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: 2 helices, 4 β-strands

ElementResiduesLengthSheet
α-helix2-43
β-strand6-1381
β-strand18-2581
α-helix28-4114
β-strand47-5151
β-strand56-6051

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
Protein GAprotein61Streptococcus sp. G148P06654 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1IGD_1 PROTEIN G (chains A)
MTPAVTTYKLVINGKTLKGETTTKAVDAETAEKAFKQYANDNGVDGVWTYDDATKTFTVT
E

Primary citation

The third IgG-binding domain from streptococcal protein G. An analysis by X-ray crystallography of the structure alone and in a complex with Fab. Derrick, J.P., Wigley, D.B. J Mol Biol (1994) 243:906-918. DOI 10.1006/jmbi.1994.1691 · PubMed

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

Browse structure collections

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