Evidence map›Paper›PMID 21270306›Full record

ArticleThe Journal of experimental biology2011

Deconstructing honeybee vitellogenin: novel 40 kDa fragment assigned to its N terminus.

Heli Havukainen, Øyvind Halskau, Lars Skjaerven, Bente Smedal, Gro V Amdam

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of experimental biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.7field-weighted citation impact, top 6% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 46 citations in OpenAlex.

  1. Evidence for vitellogenin DNA-binding in honey bees.Protein science : a publication of the Protein Society · 2025
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  13. Protein profiling as early detection biomarkers for TiOEcotoxicology (London, England) · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Heli HavukainenDepartment of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Aas, Norway. heli.havukainen@umb.no
Øyvind Halskau
Lars Skjaerven
Bente Smedal
Gro V Amdam
Norwegian University of Life Sciences · NOUniversity of Bergen · NOArizona State University · US

Funding

THE MATHEMATICAL DEMOGRAPHY OF BIODEMOGRAPHYP01AG022500 · NIA · UNIVERSITY OF CALIFORNIA DAVIS · PI CAREY, JAMES R. · 2003 to 2010
$8.1M
NIA NIH HHS P01 AG022500NIA NIH HHS P01 AG22500
6 · The paper itself

Abstract

Vitellogenin, an egg-yolk protein precursor common to oviparous animals, is found abundantly in honeybee workers - a caste of helpers that do not usually lay eggs. Instead, honeybee vitellogenin (180 kDa) participates in processes other than reproduction: it influences hormone signaling, food-related behavior, immunity, stress resistance and longevity. The molecular basis of these functions is largely unknown. Here, we establish and compare the molecular properties of vitellogenin from honeybee hemolymph (blood) and abdominal fat body, two compartments that are linked to vitellogenin functions. Our results reveal a novel 40 kDa vitellogenin fragment in abdominal fat body tissue, the main site for vitellogenin synthesis and storage. Using MALDI-TOF combined with MS/MS mass-spectroscopy, we assign the 40 kDa fragment to the N terminus of vitellogenin, whereas a previously observed 150 kDa fragment corresponded to the remainder of the protein. We show that both protein units are N glycosylated and phosphorylated. Focusing on the novel 40 kDa fragment, we present a homology model based on the structure of lamprey lipovitellin that includes a conserved β-barrel-like shape, with a lipophilic cavity in the interior and two insect-specific loops that have not been described before. Our data indicate that the honeybee fat body vitellogenin experiences cleavage unlike hemolymph vitellogenin, a pattern that can suggest a tissue-specific role. Our experiments advance the molecular understanding of vitellogenin, of which the multiple physiological and behavioral effects in honeybees are well established.

Indexed as

Models, MolecularAnimalsBase SequenceBeesFat BodyFemaleFluorescent Antibody TechniqueHemolymphModels, GeneticSequence Analysis, DNASpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationTandem Mass SpectrometryVitellogeninsVitellogenins

Identifiers

PMID21270306
PMCPMC3027471
OpenAlexW1978724027

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.