2QMT: Immunoglobulin G-binding protein G

Crystal Polymorphism of Protein GB1 Examined by Solid-state NMR and X-ray Diffraction. Determined by X-ray diffraction at 1.05 Å resolution. Released 25 Dec 2007.

Method: X-ray diffraction
Resolution: 1.05 Å
Organism: Staphylococcus aureus
Chains: 1
Atoms: 594
Mol. weight: 6.56 kDa
Ligands: PO4, MRD, IPA
Released: 25 Dec 2007

Explore 2QMT in 3D Show helices and sheets RCSB PDB PDBe

Secondary structure: helices and β-sheets

2QMT 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

Element	Residues	Length	Sheet
β-strand	2-8	7	1
β-strand	13-19	7	1
α-helix	23-36	14
β-strand	42-46	5	1
β-strand	51-55	5	1

Molecules and chains

Molecule	Chains	Type	Length	Organism	UniProt
Immunoglobulin G-binding protein G	A	protein	56	Staphylococcus aureus	P19909 (AlphaFold model)

Sequence of entity 1 (A), FASTA

>2QMT_1 Immunoglobulin G-binding protein G (chains A)
MQYKLILNGKTLKGETTTEAVDAATAEKVFKQYANDNGVDGEWTYDDATKTFTVTE

Ligands and cofactors

ID	Name	Formula	Copies
PO4	Phosphate ion	O4 P	1
MRD	(4R)-2-methylpentane-2,4-diol	C6 H14 O2	1
IPA	Isopropyl alcohol	C3 H8 O	2

Primary citation

Crystal Polymorphism of Protein GB1 Examined by Solid-State NMR Spectroscopy and X-ray Diffraction. Frericks Schmidt, H.L., Sperling, L.J., Gao, Y.G. et al. J Phys Chem B (2007) 111:14362-14369. DOI 10.1021/jp075531p · PubMed

Other PDB entries of the same protein (UniProt P19909 (AlphaFold model), which also has an AlphaFold model), best resolution first:

3FIL 0.88 Å, Structural and energetic determinants for hyperstable variants of GB1 obtained from…
9I2I 1.08 Å, X-ray structure of the B1 domain of streptococcal protein G triple mutant T2Q, N8D, and…
6CHE 1.1 Å, Selenomethionine mutant (A34Sem) of protein GB1 examined by X-ray diffraction
6CPZ 1.12 Å, Selenomethionine mutant (I6Sem) of protein GB1 examined by X-ray diffraction
2GI9 1.14 Å, Backbone Conformational Constraints in a Microcrystalline U-15N-Labeled Protein by 3D…
6C9O 1.2 Å, Selenomethionine mutant (V29Sem) of protein GB1 examined by X-ray diffraction
6CTE 1.2 Å, 77Se-NMR probes the protein environment of selenomethionine
6OC7 1.3 Å, HMP42 Fab in complex with Protein G
6NLA 1.34 Å, Crystal structure of de novo designed metal-controlled dimer of B1…
2ON8 1.35 Å, Gbeta1 stabilization by in vitro evolution and computational design
12LO 1.37 Å, X-ray crystal structure of Protein GB1 mutant K13A
6NL6 1.4 Å, Crystal structure of mutant B1 immunoglobulin-binding domain of Streptococcal Protein G…

Browse structure collections

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