1ihb: Difference between revisions
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[[Image:1ihb.gif|left|200px]] | [[Image:1ihb.gif|left|200px]] | ||
'''CRYSTAL STRUCTURE OF P18-INK4C(INK6)''' | {{Structure | ||
|PDB= 1ihb |SIZE=350|CAPTION= <scene name='initialview01'>1ihb</scene>, resolution 1.95Å | |||
|SITE= | |||
|LIGAND= | |||
|ACTIVITY= | |||
|GENE= P18-INK4C(INK6) ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]) | |||
}} | |||
'''CRYSTAL STRUCTURE OF P18-INK4C(INK6)''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1IHB is a [ | 1IHB is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IHB OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of the CDK4/6 inhibitory protein p18INK4c provides insights into ankyrin-like repeat structure/function and tumor-derived p16INK4 mutations., Venkataramani R, Swaminathan K, Marmorstein R, Nat Struct Biol. 1998 Jan;5(1):74-81. PMID:[http:// | Crystal structure of the CDK4/6 inhibitory protein p18INK4c provides insights into ankyrin-like repeat structure/function and tumor-derived p16INK4 mutations., Venkataramani R, Swaminathan K, Marmorstein R, Nat Struct Biol. 1998 Jan;5(1):74-81. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9437433 9437433] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: p18-ink4c(ink6)]] | [[Category: p18-ink4c(ink6)]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:50:21 2008'' | ||
Revision as of 09:50, 20 March 2008
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| 1ihb, resolution 1.95Å | |||||||||||||
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| Gene: | P18-INK4C(INK6) (Homo sapiens) | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
CRYSTAL STRUCTURE OF P18-INK4C(INK6)
Overview
p18INK4c is a member of a family of INK4 proteins that function to arrest the G1 to S cell cycle transition by inhibiting the activity of the cyclin-dependent kinases 4 and 6. The X-ray crystal structure of the human p18INK4c protein to a resolution of 1.95 A reveals an elongated molecule comprised of five contiguous 32- or 33-residue ankyrin-like repeat units. Each ankyrin-like repeat contains a beta-strand helix-turn-helix extended strand beta-strand motif that associates with neighboring motifs through beta-sheet, and helical bundle interactions. Conserved ankyrin-like repeat residues function to facilitate the ankyrin repeat fold and the tertiary interactions between neighboring repeat units. A large percentage of residues that are conserved among INK4 proteins and that map to positions of tumor-derived p16INK4 mutations play important roles in protein stability. A subset of these residues suggest an INK4 binding surface for the cyclin-dependent kinases 4 and 6. This surface is centered around a region that shows structural features uncharacteristic of ankyrin-like repeat units.
About this Structure
1IHB is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of the CDK4/6 inhibitory protein p18INK4c provides insights into ankyrin-like repeat structure/function and tumor-derived p16INK4 mutations., Venkataramani R, Swaminathan K, Marmorstein R, Nat Struct Biol. 1998 Jan;5(1):74-81. PMID:9437433
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