3j8h

From Proteopedia

(Difference between revisions)

Revision as of 17:30, 6 March 2020

Structure of the rabbit ryanodine receptor RyR1 in complex with FKBP12 at 3.8 Angstrom resolution

3j8h, resolution 3.80Å

Structural highlights

3j8h is a 8 chain structure with sequence from European rabbit and Oryctolagus cuniculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	FKBP1A, FKBP1, FKBP12 (European rabbit)
Activity:	Peptidylprolyl isomerase, with EC number 5.2.1.8
Experimental data:	Check to display Experimental Data
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FKB1A_RABIT] Keeps in an inactive conformation TGFBR1, the TGF-beta type I serine/threonine kinase receptor, preventing TGF-beta receptor activation in absence of ligand. Recruites SMAD7 to ACVR1B which prevents the association of SMAD2 and SMAD3 with the activin receptor complex, thereby blocking the activin signal. May modulate the RYR1 calcium channel activity. PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity). [RYR1_RABIT] Calcium channel that mediates the release of Ca(2+) from the sarcoplasmic reticulum into the cytoplasm and thereby plays a key role in triggering muscle contraction following depolarization of T-tubules. Repeated very high-level exercise increases the open probability of the channel and leads to Ca(2+) leaking into the cytoplasm. Can also mediate the release of Ca(2+) from intracellular stores in neurons, and may thereby promote prolonged Ca(2+) signaling in the brain. Required for normal embryonic development of muscle fibers and skeletal muscle. Required for normal heart morphogenesis, skin development and ossification during embryogenesis (By similarity).^[1] ^[2]

Publication Abstract from PubMed

The ryanodine receptors (RyRs) are high-conductance intracellular Ca(2+) channels that play a pivotal role in the excitation-contraction coupling of skeletal and cardiac muscles. RyRs are the largest known ion channels, with a homotetrameric organization and approximately 5,000 residues in each protomer. Here we report the structure of the rabbit RyR1 in complex with its modulator FKBP12 at an overall resolution of 3.8 A, determined by single-particle electron cryomicroscopy. Three previously uncharacterized domains, named central, handle and helical domains, display the armadillo repeat fold. These domains, together with the amino-terminal domain, constitute a network of superhelical scaffold for binding and propagation of conformational changes. The channel domain exhibits the voltage-gated ion channel superfamily fold with distinct features. A negative-charge-enriched hairpin loop connecting S5 and the pore helix is positioned above the entrance to the selectivity-filter vestibule. The four elongated S6 segments form a right-handed helical bundle that closes the pore at the cytoplasmic border of the membrane. Allosteric regulation of the pore by the cytoplasmic domains is mediated through extensive interactions between the central domains and the channel domain. These structural features explain high ion conductance by RyRs and the long-range allosteric regulation of channel activities.

Structure of the rabbit ryanodine receptor RyR1 at near-atomic resolution.,Yan Z, Bai XC, Yan C, Wu J, Li Z, Xie T, Peng W, Yin CC, Li X, Scheres SH, Shi Y, Yan N Nature. 2015 Jan 1;517(7532):50-5. doi: 10.1038/nature14063. Epub 2014 Dec 15. PMID:25517095^[3]

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

References

↑ Dulhunty AF, Laver DR, Gallant EM, Casarotto MG, Pace SM, Curtis S. Activation and inhibition of skeletal RyR channels by a part of the skeletal DHPR II-III loop: effects of DHPR Ser687 and FKBP12. Biophys J. 1999 Jul;77(1):189-203. PMID:10388749 doi:10.1016/S0006-3495(99)76881-5
↑ Kakizawa S, Yamazawa T, Chen Y, Ito A, Murayama T, Oyamada H, Kurebayashi N, Sato O, Watanabe M, Mori N, Oguchi K, Sakurai T, Takeshima H, Saito N, Iino M. Nitric oxide-induced calcium release via ryanodine receptors regulates neuronal function. EMBO J. 2011 Oct 28;31(2):417-28. doi: 10.1038/emboj.2011.386. PMID:22036948 doi:10.1038/emboj.2011.386
↑ Yan Z, Bai XC, Yan C, Wu J, Li Z, Xie T, Peng W, Yin CC, Li X, Scheres SH, Shi Y, Yan N. Structure of the rabbit ryanodine receptor RyR1 at near-atomic resolution. Nature. 2015 Jan 1;517(7532):50-5. doi: 10.1038/nature14063. Epub 2014 Dec 15. PMID:25517095 doi:http://dx.doi.org/10.1038/nature14063

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3j8h"

@@ Line 1: / Line 1: @@
 ==Structure of the rabbit ryanodine receptor RyR1 in complex with FKBP12 at 3.8 Angstrom resolution==
-<SX load='3j8h' size='340' side='right'  viewer='molstar'  caption='[[3j8h]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
+<SX load='3j8h' size='340' side='right' viewer='molstar' caption='[[3j8h]], [[Resolution|resolution]] 3.80&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[3j8h]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/European_rabbit European rabbit] and [http://en.wikipedia.org/wiki/Oryctolagus_cuniculus Oryctolagus cuniculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3J8H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3J8H FirstGlance]. <br>
@@ Line 23: / Line 23: @@
 ==See Also==
-*[[Ryanodine receptor|Ryanodine receptor]]
+*[[Ryanodine receptor 3D structures|Ryanodine receptor 3D structures]]
 == References ==
 <references/>
@@ Line 29: / Line 29: @@
 </SX>
 [[Category: European rabbit]]
+[[Category: Large Structures]]
 [[Category: Oryctolagus cuniculus]]
 [[Category: Peptidylprolyl isomerase]]

3j8h

From Proteopedia

Revision as of 17:30, 6 March 2020

Structure of the rabbit ryanodine receptor RyR1 in complex with FKBP12 at 3.8 Angstrom resolution

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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