Gelsolin |
crystal structure of the copii coat subunit, sec24, complexed with a peptide from the snare protein sed5 (yeast syntaxin-5)
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Identifiers |
Symbol |
Gelsolin |
Pfam |
PF00626 |
Pfam clan |
CL0092 |
InterPro |
IPR007123 |
SCOP |
1vil |
SUPERFAMILY |
1vil |
Available protein structures: |
Pfam |
structures |
PDB |
RCSB PDB; PDBe; PDBj |
PDBsum |
structure summary |
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Gelsolin |
PDB rendering based on 1c0f.
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Available structures |
PDB |
Ortholog search: PDBe, RCSB |
List of PDB id codes |
1C0F, 1C0G, 1D4X, 1DEJ, 1EQY, 1ESV, 1H1V, 1KCQ, 1MDU, 1NLV, 1NM1, 1NMD, 1P8X, 1P8Z, 1SOL, 1T44, 1YAG, 1YVN, 2FF3, 2FF6, 2FH1, 2FH2, 2FH3, 2FH4, 3A5L, 3A5M, 3A5N, 3A5O, 3CI5, 3CIP, 3CJB, 3CJC, 3FFK, 3FFN, 3TU5, 4PKG, 4PKH, 4PKI
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Identifiers |
Symbols |
GSN ; ADF; AGEL |
External IDs |
OMIM: 137350 MGI: 95851 HomoloGene: 147 GeneCards: GSN Gene |
Gene ontology |
Molecular function |
• actin binding
• calcium ion binding
• protein binding
• protein domain specific binding
• myosin II binding
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Cellular component |
• ruffle
• podosome
• extracellular region
• extracellular space
• nucleus
• cytoplasm
• cytosol
• plasma membrane
• focal adhesion
• actin cytoskeleton
• sarcoplasm
• lamellipodium
• actin cap
• cortical actin cytoskeleton
• myelin sheath
• perinuclear region of cytoplasm
• extracellular exosome
• blood microparticle
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Biological process |
• phagocytosis, engulfment
• apoptotic process
• cellular component disassembly involved in execution phase of apoptosis
• aging
• positive regulation of gene expression
• programmed cell death
• oligodendrocyte development
• striated muscle atrophy
• extracellular matrix disassembly
• actin filament polymerization
• protein destabilization
• tissue regeneration
• sequestering of actin monomers
• actin nucleation
• response to ethanol
• negative regulation of viral entry into host cell
• phosphatidylinositol-mediated signaling
• actin filament severing
• barbed-end actin filament capping
• positive regulation of actin nucleation
• response to folic acid
• actin filament capping
• cilium morphogenesis
• cellular response to cadmium ion
• regulation of podosome assembly
• actin filament reorganization
• renal protein absorption
• hepatocyte apoptotic process
• positive regulation of keratinocyte apoptotic process
• regulation of wound healing, spreading of epidermal cells
• regulation of establishment of T cell polarity
• regulation of plasma membrane raft polarization
• regulation of receptor clustering
• positive regulation of protein processing in phagocytic vesicle
• amyloid fibril formation
• positive regulation of cysteine-type endopeptidase activity involved in apoptotic signaling pathway
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Sources: Amigo / QuickGO |
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RNA expression pattern |
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More reference expression data |
Orthologs |
Species |
Human |
Mouse |
Entrez |
2934 |
227753 |
Ensembl |
ENSG00000148180 |
ENSMUSG00000026879 |
UniProt |
P06396 |
P13020 |
RefSeq (mRNA) |
NM_000177 |
NM_001206367 |
RefSeq (protein) |
NP_000168 |
NP_001193296 |
Location (UCSC) |
Chr 9:
121.21 – 121.33 Mb |
Chr 2:
35.28 – 35.31 Mb |
PubMed search |
[1] |
[2] |
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Gelsolin is an actin-binding protein that is a key regulator of actin filament assembly and disassembly. Gelsolin is one of the most potent members of the actin-severing gelsolin/villin superfamily, as it severs with nearly 100% efficiency.[1][2] Gelsolin is located intracellularly (in cytosol and mitochondria) and extracellularly (in blood plasma).[3]
Contents
- 1 Structure
- 2 Regulation
- 3 Cellular function
- 4 Animal studies
- 5 Related proteins
- 6 Interactions
- 7 See also
- 8 References
- 9 External links
Structure
Gelsolin is an 82-kD protein with six homologous subdomains, referred to as S1-S6. Each subdomain is composed of a five-stranded β-sheet, flanked by two α-helices, one positioned perpendicular with respect to the strands and one positioned parallel. The N-terminal (S1-S3) forms an extended β-sheet, as does the C-terminal (S4-S6).[4]
Regulation
Among the lipid-binding actin regulatory proteins, gelsolin (along with cofilin) is one of the few that exhibit preferential binding toward polyphosphoinositide (PPIs).[5] The binding sequences in gelsolin closely resemble the motifs in the other PPI-binding proteins.[5]
Gelsolin's activity is stimulated by calcium ions (Ca2+).[2] Although the protein retains its overall structural integrity in both activated and deactivated states, the S6 helical tail moves like a latch depending on the concentration of calcium ions.[6] The C-terminal end detects the calcium concentration within the cell. When there is no Ca2+ present, the tail of S6 shields the actin-binding sites on one of S2's helices.[4] When a calcium ion attaches to the S6 tail, however, it straightens, exposing the S2 actin-binding sites.[6] The N-terminal is directly involved in the severing of actin. S2 and S3 bind to the actin before the binding of S1 severs actin-actin bonds and caps the barbed end.[5]
Gelsolin can be inhibited by a local rise in the concentration of phosphatidylinositol (4,5)-bisphosphate (PIP2), a PPI. This is a two step process. Firstly, (PIP2) binds to S2 and S3, inhibiting gelsolin from actin side binding. Then, (PIP2) binds to gelsolin’s S1, preventing gelsolin from severing actin, although (PIP2) does not bind directly to gelsolin's actin-binding site.[5]
Gelsolin's severing of actin, in contrast to the severing of microtubules by katanin, does not require any extra energy input.
Cellular function
As an important actin regulator, gelsolin plays a role in podosome formation (along with Arp3, cortactin, and Rho GTPases).[7]
Gelsolin also inhibits apoptosis by stabilizing the mitochondria.[3] Prior to cell death, mitochondria normally lose membrane potential and become more permeable. Gelsolin can impede the release of cytochrome C, obstructing the signal amplification that would have led to apoptosis.[8]
Actin can be cross-linked into a gel by actin cross-linking proteins. Gelsolin can turn this gel into a sol, hence the name gelsolin.
Animal studies
Research in mice suggests that gelsolin, like other actin-severing proteins, is not expressed to a significant degree until after the early embryonic stage—approximately 2 weeks in murine embryos.[9] In adult specimens, however, gelsolin is particularly important in motile cells, such as blood platelets. Mice with null gelsolin-coding genes undergo normal embryonic development, but the deformation of their blood platelets reduced their motility, resulting in a slower response to wound healing.[9]
An insufficiency of gelsolin in mice has also been shown to cause increased permeability of the vascular pulmonary barrier, suggesting that gelsolin is important in the response to lung injury.[10]
Related proteins
Sequence comparisons indicate an evolutionary relationship between gelsolin, villin, fragmin and severin.[11] Six large repeating segments occur in gelsolin and villin, and 3 similar segments in severin and fragmin. While the multiple repeats have yet to be related to any known function of the actin-severing proteins, the superfamily appears to have evolved from an ancestral sequence of 120 to 130 amino acid residues.[1][11]
Interactions
Gelsolin is a cytoplasmic, calcium-regulated, actin-modulating protein that binds to the barbed ends of actin filaments, preventing monomer exchange (end-blocking or capping).[12] It can promote nucleation (the assembly of monomers into filaments), as well as sever existing filaments. In addition, this protein binds with high affinity to fibronectin. Plasma gelsolin and cytoplasmic gelsolin are derived from a single gene by alternate initiation sites and differential splicing.
Gelsolin has been shown to interact with:
- Amyloid precursor protein,[13]
- Androgen receptor,[14]
- PTK2B,[15] and
- VDAC1.[8]
See also
- Cortactin
- Villin
- Supervillin
- Finnish type amyloidosis
References
- ^ a b Ghoshdastider U, Popp D, Burtnick LD, Robinson RC (2013). "The expanding superfamily of gelsolin homology domain proteins". Cytoskeleton (Hoboken) 70 (11): 775–95. doi:10.1002/cm.21149. PMID 24155256.
- ^ a b Sun HQ, Yamamoto M, Mejillano M, Yin HL (November 1999). "Gelsolin, a multifunctional actin regulatory protein". J. Biol. Chem. 274 (47): 33179–82. doi:10.1074/jbc.274.47.33179. PMID 10559185.
- ^ a b Koya RC, Fujita H, Shimizu S, Ohtsu M, Takimoto M, Tsujimoto Y, Kuzumaki N (May 2000). "Gelsolin inhibits apoptosis by blocking mitochondrial membrane potential loss and cytochrome c release". J. Biol. Chem. 275 (20): 15343–9. doi:10.1074/jbc.275.20.15343. PMID 10809769.
- ^ a b Kiselar JG, Janmey PA, Almo SC, Chance MR (April 2003). "Visualizing the Ca2+-dependent activation of gelsolin by using synchrotron footprinting". Proc. Natl. Acad. Sci. U.S.A. 100 (7): 3942–7. doi:10.1073/pnas.0736004100. PMC 153027. PMID 12655044.
- ^ a b c d Yu FX, Sun HQ, Janmey PA, Yin HL (July 1992). "Identification of a polyphosphoinositide-binding sequence in an actin monomer-binding domain of gelsolin". J. Biol. Chem. 267 (21): 14616–21. PMID 1321812.
- ^ a b Burtnick LD, Urosev D, Irobi E, Narayan K, Robinson RC (July 2004). "Structure of the N-terminal half of gelsolin bound to actin: roles in severing, apoptosis and FAF". EMBO J. 23 (14): 2713–22. doi:10.1038/sj.emboj.7600280. PMC 514944. PMID 15215896.
- ^ Varon C, Tatin F, Moreau V, Van Obberghen-Schilling E, Fernandez-Sauze S, Reuzeau E, Kramer I, Génot E (May 2006). "Transforming growth factor beta induces rosettes of podosomes in primary aortic endothelial cells". Mol. Cell. Biol. 26 (9): 3582–94. doi:10.1128/MCB.26.9.3582-3594.2006. PMC 1447430. PMID 16611998.
- ^ a b Kusano H, Shimizu S, Koya RC, Fujita H, Kamada S, Kuzumaki N, Tsujimoto Y (October 2000). "Human gelsolin prevents apoptosis by inhibiting apoptotic mitochondrial changes via closing VDAC". Oncogene 19 (42): 4807–14. doi:10.1038/sj.onc.1203868. PMID 11039896.
- ^ a b Witke W, Sharpe AH, Hartwig JH, Azuma T, Stossel TP, Kwiatkowski DJ (April 1995). "Hemostatic, inflammatory, and fibroblast responses are blunted in mice lacking gelsolin". Cell 81 (1): 41–51. doi:10.1016/0092-8674(95)90369-0. PMID 7720072.
- ^ Becker PM, Kazi AA, Wadgaonkar R, Pearse DB, Kwiatkowski D, Garcia JG (April 2003). "Pulmonary vascular permeability and ischemic injury in gelsolin-deficient mice". Am. J. Respir. Cell Mol. Biol. 28 (4): 478–84. doi:10.1165/rcmb.2002-0024OC. PMID 12654637.
- ^ a b Way M, Weeds A (October 1988). "Nucleotide sequence of pig plasma gelsolin. Comparison of protein sequence with human gelsolin and other actin-severing proteins shows strong homologies and evidence for large internal repeats". J. Mol. Biol. 203 (4): 1127–33. doi:10.1016/0022-2836(88)90132-5. PMID 2850369.
- ^ Weeds AG, Gooch J, Pope B, Harris HE (November 1986). "Preparation and characterization of pig plasma and platelet gelsolins". Eur. J. Biochem. 161 (1): 69–76. doi:10.1111/j.1432-1033.1986.tb10125.x. PMID 3023087.
- ^ Chauhan VP, Ray I, Chauhan A, Wisniewski HM (May 1999). "Binding of gelsolin, a secretory protein, to amyloid beta-protein". Biochem. Biophys. Res. Commun. 258 (2): 241–6. doi:10.1006/bbrc.1999.0623. PMID 10329371.
- ^ Nishimura K, Ting HJ, Harada Y, Tokizane T, Nonomura N, Kang HY, Chang HC, Yeh S, Miyamoto H, Shin M, Aozasa K, Okuyama A, Chang C (August 2003). "Modulation of androgen receptor transactivation by gelsolin: a newly identified androgen receptor coregulator". Cancer Res. 63 (16): 4888–94. PMID 12941811.
- ^ Wang Q, Xie Y, Du QS, Wu XJ, Feng X, Mei L, McDonald JM, Xiong WC (February 2003). "Regulation of the formation of osteoclastic actin rings by proline-rich tyrosine kinase 2 interacting with gelsolin". J. Cell Biol. 160 (4): 565–75. doi:10.1083/jcb.200207036. PMC 2173747. PMID 12578912.
External links
- Gelsolin at the US National Library of Medicine Medical Subject Headings (MeSH)
Cell signaling: calcium signaling and calcium metabolism
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Cell membrane |
Ion pumps
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- SERCA
- Sodium-calcium exchanger
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Cell membrane calcium channels
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- VDCC
- TRP
- NMDA receptor
- AMPA receptor
- 5-HT3 receptor
- P2X purinoreceptor
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Adhesion molecules
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Other
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Intracellular signaling
& calc. regulation |
Second messengers
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Store gates
(ligand-gated calcium channel)
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Molecular switches, and kinases
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- Troponin C
- Calmodulin
- CaM kinases
- PKC
- NCS
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Chelators and calcium sensors
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- Calbindin
- S100
- pervalbumin
- Calretinin
- Calsequestrin
- Sarcalumenin
- Phospholamban
- Synaptotagmins
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Proteases
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Cytoskeleton remodeling proteins
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Chaperones
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Other
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Calcium-binding
protein domains |
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Extracellular ligands |
- Parathyroid hormone
- Calcitonin
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Calcium-binding proteins |
Intracellular calcium-sensing proteins
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- Calmodulin
- Calnexin
- Calreticulin
- Gelsolin
- neuronal
- Hippocalcin
- Neurocalcin
- Recoverin
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Membrane protein
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- Vitamin D-dependent calcium-binding protein/Calbindin
- Calexcitin
- Calsequestrin
- Osteocalcin
- Osteonectin
- S-100
- Synaptotagmin
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Cytoskeleton
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Extracellular matrix
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Cell signaling: calcium signaling and calcium metabolism
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Cell membrane |
Ion pumps
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- SERCA
- Sodium-calcium exchanger
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Cell membrane calcium channels
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- VDCC
- TRP
- NMDA receptor
- AMPA receptor
- 5-HT3 receptor
- P2X purinoreceptor
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Adhesion molecules
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Other
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Intracellular signaling
& calc. regulation |
Second messengers
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Store gates
(ligand-gated calcium channel)
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Molecular switches, and kinases
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- Troponin C
- Calmodulin
- CaM kinases
- PKC
- NCS
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Chelators and calcium sensors
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- Calbindin
- S100
- pervalbumin
- Calretinin
- Calsequestrin
- Sarcalumenin
- Phospholamban
- Synaptotagmins
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Proteases
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Cytoskeleton remodeling proteins
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Chaperones
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Other
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Calcium-binding
protein domains |
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Extracellular ligands |
- Parathyroid hormone
- Calcitonin
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Calcium-binding proteins |
Intracellular calcium-sensing proteins
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- Calmodulin
- Calnexin
- Calreticulin
- Gelsolin
- neuronal
- Hippocalcin
- Neurocalcin
- Recoverin
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Membrane protein
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- Vitamin D-dependent calcium-binding protein/Calbindin
- Calexcitin
- Calsequestrin
- Osteocalcin
- Osteonectin
- S-100
- Synaptotagmin
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Cytoskeleton
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Extracellular matrix
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Proteins of the cytoskeleton
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Human |
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Nonhuman |
- Major sperm proteins
- Prokaryotic cytoskeleton
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See also: cytoskeletal defects
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PDB gallery
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1c0f: CRYSTAL STRUCTURE OF DICTYOSTELIUM CAATP-ACTIN IN COMPLEX WITH GELSOLIN SEGMENT 1
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1c0g: CRYSTAL STRUCTURE OF 1:1 COMPLEX BETWEEN GELSOLIN SEGMENT 1 AND A DICTYOSTELIUM/TETRAHYMENA CHIMERA ACTIN (MUTANT 228: Q228K/T229A/A230Y/E360H)
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1d0n: THE CRYSTAL STRUCTURE OF CALCIUM-FREE EQUINE PLASMA GELSOLIN.
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1d4x: Crystal Structure of Caenorhabditis Elegans Mg-ATP Actin Complexed with Human Gelsolin Segment 1 at 1.75 A resolution.
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1dej: CRYSTAL STRUCTURE OF A DICTYOSTELIUM/TETRAHYMENA CHIMERA ACTIN (MUTANT 646: Q228K/T229A/A230Y/A231K/S232E/E360H) IN COMPLEX WITH HUMAN GELSOLIN SEGMENT 1
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1eqy: COMPLEX BETWEEN RABBIT MUSCLE ALPHA-ACTIN: HUMAN GELSOLIN DOMAIN 1
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1esv: COMPLEX BETWEEN LATRUNCULIN A:RABBIT MUSCLE ALPHA ACTIN:HUMAN GELSOLIN DOMAIN 1
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1h1v: GELSOLIN G4-G6/ACTIN COMPLEX
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1kcq: Human Gelsolin Domain 2 with a Cd2+ bound
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1mdu: Crystal structure of the chicken actin trimer complexed with human gelsolin segment 1 (GS-1)
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1nlv: Crystal Structure Of Dictyostelium Discoideum Actin Complexed With Ca ATP And Human Gelsolin Segment 1
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1nm1: Crystal Structure of D. Dicsoideum Actin Complexed With Gelsolin Segment 1 and Mg ATP at 1.8 A Resolution
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1nmd: Crystal Structure of D. Discoideum Actin-Gelsolin Segment 1 Complex Crystallized In Presence Of Lithium ATP
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1nph: Gelsolin Domains 4-6 in Active, Actin Free Conformation Identifies Sites of Regulatory Calcium Ions
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1p8x: The Calcium-Activated C-terminal half of gelsolin
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1p8z: Complex Between Rabbit Muscle alpha-Actin: Human Gelsolin Residues Val26-Glu156
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1rgi: Crystal structure of gelsolin domains G1-G3 bound to actin
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1t44: Structural basis of actin sequestration by thymosin-B4: Implications for arp2/3 activation
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1yag: STRUCTURE OF THE YEAST ACTIN-HUMAN GELSOLIN SEGMENT 1 COMPLEX
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1yvn: THE YEAST ACTIN VAL 159 ASN MUTANT COMPLEX WITH HUMAN GELSOLIN SEGMENT 1.
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2ff3: Crystal structure of Gelsolin domain 1:N-wasp V2 motif hybrid in complex with actin
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2ff6: Crystal structure of Gelsolin domain 1:ciboulot domain 2 hybrid in complex with actin
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2fh1: C-terminal half of gelsolin soaked in low calcium at pH 4.5
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2fh2: C-terminal half of gelsolin soaked in EGTA at pH 4.5
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2fh3: C-terminal half of gelsolin soaked in low calcium at pH 8
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2fh4: C-terminal half of gelsolin soaked in EGTA at pH 8
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- http://www.bioaegistherapeutics.com