ArticleBMC biochemistry2003
Ca2+ binding to complement-type repeat domains 5 and 6 from the low-density lipoprotein receptor-related protein.
Article in BMC biochemistry, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- LRP1 Interacts with the Rift Valley Fever Virus Glycoprotein Gn via a Calcium-Dependent Multivalent Electrostatic Mechanism.Biomolecules · 2025Article
- OptiMo-LDLr: An Integrated In Silico Model with Enhanced Predictive Power for LDL Receptor Variants, Unraveling Hot Spot Pathogenic Residues.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Inhibition of PCSK9: A Promising Enhancer for Anti-PD-1/PD-L1 Immunotherapy.Research (Washington, D.C.) · 2024Review
- Low Density Lipoprotein Receptor-Related Protein-1 in Cardiac Inflammation and Infarct Healing.Frontiers in cardiovascular medicine · 2019Review
- Complement-Mediated Regulation of Apolipoprotein E in Cultured Human RPE Cells.Investigative ophthalmology & visual science · 2017Article
- The structure, dynamics, and binding of the LA45 module pair of the low-density lipoprotein receptor suggest an important role for LA4 in ligand release.Biochemistry · 2011Article
- Decoding of lipoprotein-receptor interactions: properties of ligand binding modules governing interactions with apolipoprotein E.Biochemistry · 2010Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe binding of ligands to clusters of complement-type repeat (CR)-domains in proteins of the low-density lipoprotein receptor (LDLR) family is dependent on Ca2+ ions. One reason for this cation requirement was identified from the crystal structure data for a CR-domain from the prototypic LDLR, which showed the burial of a Ca2+ ion as a necessity for correct folding and stabilization of this protein module. Additional Ca2+ binding data to other CR-domains from both LDLR and the LDLR-related protein (LRP) have suggested the presence of a conserved Ca2+ cage within CR-domains from this family of receptors that function in endocytosis and signalling.
resultsWe have previously described the binding of several ligands to a fragment comprising the fifth and the sixth CR-domain (CR56) from LRP, as well as qualitatively described the binding of Ca2+ ions to this CR-domain pair. In the present study we have applied the rate dialysis method to measure the affinity for Ca2+, and show that CR56 binds 2 Ca2+ ions with an average affinity of KD = 10.6 microM, and there is no indication of additional Ca2+ binding sites within this receptor fragment.
conclusionsBoth CR-domains of CR56 bind a single Ca2+ ion with an affinity of 10.6 microM within the range of affinities demonstrated for several other CR-domains.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.