Group:MUZIC:CARP

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CARDIAC ANKYRIN REPEAT PROTEIN; '''CARP''' belongs to the conserved muscle ankyrin repeat protein (MARP) family, Also known as '''Ankrd1'''.MARP family consist of two more homologous members Ankyrin repeat domain containing protein 2 (Ankrd2) and Diabetes related ankyrin repeat protein DARP.Mainly expressed in activated vascular endothelial cells. To a lower extent, also expressed in hepatoma cells.<ref>pmid 7730328 </ref>
CARDIAC ANKYRIN REPEAT PROTEIN; '''CARP''' belongs to the conserved muscle ankyrin repeat protein (MARP) family, Also known as '''Ankrd1'''.MARP family consist of two more homologous members Ankyrin repeat domain containing protein 2 (Ankrd2) and Diabetes related ankyrin repeat protein DARP.Mainly expressed in activated vascular endothelial cells. To a lower extent, also expressed in hepatoma cells.<ref>pmid 7730328 </ref>
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{{STRUCTURE_1n0r| PDB=Q15327}}
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{{STRUCTURE_1n0r| PDB=1n11}}
== Structure ==
== Structure ==

Revision as of 12:41, 25 July 2011


Introduction

CARDIAC ANKYRIN REPEAT PROTEIN; CARP belongs to the conserved muscle ankyrin repeat protein (MARP) family, Also known as Ankrd1.MARP family consist of two more homologous members Ankyrin repeat domain containing protein 2 (Ankrd2) and Diabetes related ankyrin repeat protein DARP.Mainly expressed in activated vascular endothelial cells. To a lower extent, also expressed in hepatoma cells.[1]

PDB ID 1n11

Drag the structure with the mouse to rotate
1n0r, resolution 1.50Å ()
Ligands:
Related: 1n0q
Resources: FirstGlance, OCA, PDBsum, RCSB
Coordinates: save as pdb, mmCIF, xml



Contents

Structure

Using the N2A region of titin as bait in a yeast 2-hybrid screen of a skeletal muscle cDNA library cloned ANKRD1, which they called CARP. [2] full-length cDNA encoding ANKRD1 contains a nuclear localization signal, 4 tandem ankyrin-like repeats, multiple phosphorylation sites, and a PEST-rich region, which is typically found in rapidly degraded proteins.[3]

Gene Function

CARP plays a structural role by interacting with the Z disc protein titin. Ankrd1/CARP is a part of the titin-mechanosensory signaling complex in the sarcomere and in response to stretch it translocates to the nucleus where it participates in the regulation of cardiac genes as a transcriptional co-repressor.Ankrd1/CARP has a role in the propagation of signals initiated by myogenic regulatory factors (MRFs) during myogenesis.[4] CARP overexpression in muscle fibres fails to affect their calibre, indicating that CARP per se cannot initiate atrophy. However, a switch towards fast-twitch fibres is observed, suggesting that CARP plays a role in skeletal muscle plasticity.[5] Mutations in the ANKRD1 gene encoding CARP are responsible for human dilated cardiomyopathy.[6]

Localization

Ankrd1/CARP is a part of the titin-mechanosensory signaling complex in the sarcomere and in response to stretch it translocates to the nucleus where it participates in the regulation of cardiac genes as a transcriptional co-repressor.

CARP Interactions

CARP interacts with the titin.[7]



Refrences

  1. ↑ Chu W, Burns DK, Swerlick RA, Presky DH. Identification and characterization of a novel cytokine-inducible nuclear protein from human endothelial cells. J Biol Chem. 1995 Apr 28;270(17):10236-45. PMID:7730328
  2. ↑ Miller MK, Bang ML, Witt CC, Labeit D, Trombitas C, Watanabe K, Granzier H, McElhinny AS, Gregorio CC, Labeit S. The muscle ankyrin repeat proteins: CARP, ankrd2/Arpp and DARP as a family of titin filament-based stress response molecules. J Mol Biol. 2003 Nov 7;333(5):951-64. PMID:14583192
  3. ↑ Chu W, Burns DK, Swerlick RA, Presky DH. Identification and characterization of a novel cytokine-inducible nuclear protein from human endothelial cells. J Biol Chem. 1995 Apr 28;270(17):10236-45. PMID:7730328
  4. ↑ Kojic S, Nestorovic A, Rakicevic L, Belgrano A, Stankovic M, Divac A, Faulkner G. A novel role for cardiac ankyrin repeat protein Ankrd1/CARP as a co-activator of the p53 tumor suppressor protein. Arch Biochem Biophys. 2010 Oct 1;502(1):60-7. Epub 2010 Jul 3. PMID:20599664 doi:10.1016/j.abb.2010.06.029
  5. ↑ Laure L, Suel L, Roudaut C, Bourg N, Ouali A, Bartoli M, Richard I, Daniele N. Cardiac ankyrin repeat protein is a marker of skeletal muscle pathological remodelling. FEBS J. 2009 Feb;276(3):669-84. PMID:19143834 doi:10.1111/j.1742-4658.2008.06814.x
  6. ↑ Duboscq-Bidot L, Charron P, Ruppert V, Fauchier L, Richter A, Tavazzi L, Arbustini E, Wichter T, Maisch B, Komajda M, Isnard R, Villard E. Mutations in the ANKRD1 gene encoding CARP are responsible for human dilated cardiomyopathy. Eur Heart J. 2009 Sep;30(17):2128-36. Epub 2009 Jun 12. PMID:19525294 doi:10.1093/eurheartj/ehp225
  7. ↑ Miller MK, Bang ML, Witt CC, Labeit D, Trombitas C, Watanabe K, Granzier H, McElhinny AS, Gregorio CC, Labeit S. The muscle ankyrin repeat proteins: CARP, ankrd2/Arpp and DARP as a family of titin filament-based stress response molecules. J Mol Biol. 2003 Nov 7;333(5):951-64. PMID:14583192

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Narendra Kumar Verma, Nikos Pinotsis

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