1QAD: PI3-kinase P85 alpha subunit

Crystal Structure of the C-Terminal SH2 Domain of the P85 alpha Regulatory Subunit of Phosphoinositide 3-Kinase: An SH2 domain mimicking its own substrate. Determined by X-ray diffraction at 1.8 Å resolution. Released 27 Oct 1999.

Method
X-ray diffraction
Resolution
1.8 Å
Organism
Bos taurus
Chains
1
Atoms
1,014
Mol. weight
12.62 kDa
Released
27 Oct 1999

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

Secondary structure: helices and β-sheets

1QAD contains 6 α-helices and 8 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: 6 helices, 8 β-strands

ElementResiduesLengthSheet
α-helix4-63
α-helix8-103
β-strand12-1541
α-helix18-258
α-helix28-292
β-strand32-3761
β-strand44-5071
β-strand53-5971
β-strand60-6232
β-strand65-6732
β-strand7512
α-helix78-8710
α-helix90-923
β-strand103-10421

Molecules and chains

MoleculeChainsTypeLengthOrganismUniProt
PI3-kinase P85 alpha subunitAprotein111Bos taurusP23727 (AlphaFold model)
Sequence of entity 1 (A), FASTA
>1QAD_1 PI3-KINASE P85 ALPHA SUBUNIT (chains A)
EDLPHHDEKTWNVGSSNRNKAENLLRGKRDGTFLVRESSKQGCYACSVVVDGEVKHCVIN
KTATGYGFAEPYNLYSSLKELVLHYQHTSLVQHNDSLNVTLAYPVYAQQRR

Primary citation

Crystal structure of the C-terminal SH2 domain of the p85alpha regulatory subunit of phosphoinositide 3-kinase: an SH2 domain mimicking its own substrate. Hoedemaeker, F.J., Siegal, G., Roe, S.M. et al. J Mol Biol (1999) 292:763-770. DOI 10.1006/jmbi.1999.3111 · PubMed

Other PDB entries of the same protein (UniProt P23727 (AlphaFold model), which also has an AlphaFold model), best resolution first:

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