1n1a

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Crystal Structure of the N-terminal domain of human FKBP52

Structural highlights

1n1a is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FKBP4_HUMAN Immunophilin protein with PPIase and co-chaperone activities (By similarity). Component of unligated steroid receptors heterocomplexes through interaction with heat-shock protein 90 (HSP90). May play a role in the intracellular trafficking of heterooligomeric forms of steroid hormone receptors between cytoplasm and nuclear compartments (By similarity). The isomerase activity controls neuronal growth cones via regulation of TRPC1 channel opening. Acts also as a regulator of microtubule dynamics by inhibiting MAPT/TAU ability to promote microtubule assembly. May have a protective role against oxidative stress in mitochondria.[1] [2] [3] [4] [5]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

FKBP52 is a member of the FK506-binding protein family (FKBPs). The N-terminal domain of FKBP52 (FKBP52-N; residues 1-140) is responsible for peptidyl-prolyl isomerase activity and binding of FK506. Here, the crystal structure of FKBP52-N has been determined by molecular replacement to 2.4 A. FKBP52-N is defined by a six-stranded antiparallel beta-sheet wrapping with a right-handed twist around a short alpha-helix, an architecture similar to that of FKBP12. FKBP52-N is able to bind FK506 in a similar way to FKBP12. The variability in two loop regions (residues 70-76 and 108-127) is the principal reason for the specificity differences between FKBP52-N and FKBP12. The Pro120 change corresponding to Gly89 in FKBP12 limits the conformational adaptation between the loop (residues 108-127) and FK506 and decreases the FK506 affinity, while the Lys121 substitution corresponding to Ile90 of FKBP12 destroys a key interaction between FKBP52-N and calcineurin. It can be inferred from the locations of strictly conserved amino acids in the polypeptide chain that the maintenance of the overall conformation of the PPIase domains of FKBPs is essential for the PPIase activity. The N-terminal region and beta-sheets of FKBP52-N forms a hydrophobic patch which may be responsible for the binding of target proteins such as dynein or PAHX.

Structure of the N-terminal domain of human FKBP52.,Li P, Ding Y, Wu B, Shu C, Shen B, Rao Z Acta Crystallogr D Biol Crystallogr. 2003 Jan;59(Pt 1):16-22. Epub 2002, Dec 19. PMID:12499534[6]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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See Also

References

  1. ↑ Peattie DA, Harding MW, Fleming MA, DeCenzo MT, Lippke JA, Livingston DJ, Benasutti M. Expression and characterization of human FKBP52, an immunophilin that associates with the 90-kDa heat shock protein and is a component of steroid receptor complexes. Proc Natl Acad Sci U S A. 1992 Nov 15;89(22):10974-8. PMID:1279700
  2. ↑ Tai PK, Albers MW, Chang H, Faber LE, Schreiber SL. Association of a 59-kilodalton immunophilin with the glucocorticoid receptor complex. Science. 1992 May 29;256(5061):1315-8. PMID:1376003
  3. ↑ Sanchez ER, Faber LE, Henzel WJ, Pratt WB. The 56-59-kilodalton protein identified in untransformed steroid receptor complexes is a unique protein that exists in cytosol in a complex with both the 70- and 90-kilodalton heat shock proteins. Biochemistry. 1990 May 29;29(21):5145-52. PMID:2378870
  4. ↑ Shim S, Yuan JP, Kim JY, Zeng W, Huang G, Milshteyn A, Kern D, Muallem S, Ming GL, Worley PF. Peptidyl-prolyl isomerase FKBP52 controls chemotropic guidance of neuronal growth cones via regulation of TRPC1 channel opening. Neuron. 2009 Nov 25;64(4):471-83. doi: 10.1016/j.neuron.2009.09.025. PMID:19945390 doi:10.1016/j.neuron.2009.09.025
  5. ↑ Gallo LI, Lagadari M, Piwien-Pilipuk G, Galigniana MD. The 90-kDa heat-shock protein (Hsp90)-binding immunophilin FKBP51 is a mitochondrial protein that translocates to the nucleus to protect cells against oxidative stress. J Biol Chem. 2011 Aug 26;286(34):30152-60. doi: 10.1074/jbc.M111.256610. Epub, 2011 Jul 5. PMID:21730050 doi:10.1074/jbc.M111.256610
  6. ↑ Li P, Ding Y, Wu B, Shu C, Shen B, Rao Z. Structure of the N-terminal domain of human FKBP52. Acta Crystallogr D Biol Crystallogr. 2003 Jan;59(Pt 1):16-22. Epub 2002, Dec 19. PMID:12499534

Contents


PDB ID 1n1a

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