Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
1993-5-17
pubmed:abstractText
Adducin is a 200-kDa heterodimeric protein of the cortical cytoskeleton of mammalian erythrocytes. Analogs are also abundant in brain and several other tissues. In vitro, adducin bundles F-actin and enhances the binding of spectrin to actin. Previous studies have established that the beta subunit of adducin binds calmodulin (CaM) in a Ca(2+)-dependent fashion with intermediate affinity (approximately 200 nM) and that this activity is destroyed by proteolysis. We have confirmed the trypsin sensitivity of CaM binding by beta-adducin and the existence of a 38- to 39-kDa protease-resistant core. Calpain I digestion generates a larger core fragment (49 kDa) that is also devoid of CaM-binding activity. Use of recombinant beta-adducin peptides generated from partial cDNA clones identified strong CaM-binding activity within the protease-sensitive domain in residues 425-461: KQQKEKTRWLNTPNTYLRVNVADEVQRNMGSPRPKTT in single-letter amino acid codes. This region of the molecule is highly conserved between mouse, rat, and human and shares structural features with CaM-binding sequences in other proteins. Multiple flanking PEST sequences (sequences rich in proline, glutamic acid, serine, and threonine residues that enhance proteolytic sensitivity) may contribute to the protease sensitivity of this region. Consensus sequences for phosphorylation by cAMP-dependent kinases and by protein kinase C (or CaM-dependent kinase) are also found within or near this CaM-binding domain. Collectively, these data suggest a structural basis for the regulation of adducin by Ca(2+)-dependent CaM binding and possibly by covalent phosphorylation and calpain I-mediated proteolysis as well.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1409564, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1519061, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1560845, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1618855, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1651913, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1833409, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-1840603, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2059221, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2103894, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2186516, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2376589, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2420811, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2451672, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2503523, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2556106, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2706090, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2844821, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-2876518, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3208770, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3511042, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3587035, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3600811, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3693401, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3754463, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-3771508, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-388439, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-4066701, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-5432063, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-6546423, http://linkedlifedata.com/resource/pubmed/commentcorrection/8475088-942051
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0027-8424
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
90
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3398-402
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
pubmed-meshheading:8475088-Amino Acid Sequence, pubmed-meshheading:8475088-Animals, pubmed-meshheading:8475088-Base Sequence, pubmed-meshheading:8475088-Binding Sites, pubmed-meshheading:8475088-Blood Proteins, pubmed-meshheading:8475088-Calmodulin, pubmed-meshheading:8475088-Calmodulin-Binding Proteins, pubmed-meshheading:8475088-Calpain, pubmed-meshheading:8475088-Cattle, pubmed-meshheading:8475088-Cloning, Molecular, pubmed-meshheading:8475088-DNA, pubmed-meshheading:8475088-Erythrocytes, pubmed-meshheading:8475088-Kinetics, pubmed-meshheading:8475088-Macromolecular Substances, pubmed-meshheading:8475088-Molecular Sequence Data, pubmed-meshheading:8475088-Oligodeoxyribonucleotides, pubmed-meshheading:8475088-Phosphorylation, pubmed-meshheading:8475088-Protein Structure, Secondary, pubmed-meshheading:8475088-Recombinant Proteins, pubmed-meshheading:8475088-Restriction Mapping, pubmed-meshheading:8475088-Trypsin
pubmed:year
1993
pubmed:articleTitle
Calmodulin-binding domain of recombinant erythrocyte beta-adducin.
pubmed:affiliation
Department of Pathology, Yale University School of Medicine, New Haven, CT 06510.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.