Protein Phosphorylation: How Cells Regulate Their Signals
Explore the roles of kinases and phosphatases, how phosphorylation can influence protein function and the methods used to investigate these changes.
Explore protein phosphorylation
KomaGene Biotech
Science, explored with perspective
The scientific spotlight · Cell communication
Small signals.
Remarkable biology.
Explore how cells exchange information, how genes shape biological responses and how research methods make these processes visible. KomaGene Biotech connects scientific explanations with the tools used to investigate them.
A closer look
Cells receive and process signals through molecular interactions. Studying these exchanges helps researchers investigate growth, immune responses and changes in cellular behaviour.
02 / Explore research themes
Every discovery starts
with a question.
Investigate the connections between molecular signals, gene activity and cellular behaviour. Open a research theme to explore the questions and approaches behind it.
01
Cellular communication
How does a molecular message become a cellular response?
Cells detect signals through receptors and transmit information through interacting molecules. Exploring these pathways helps connect an external stimulus with changes in metabolism, gene expression or cell behaviour.
02
Gene regulation
What determines when and how a gene is expressed?
Gene activity is shaped by regulatory proteins, chromatin organisation and the processing and stability of RNA. Investigating these layers helps researchers understand differences between cell types and responses to changing conditions.
03
Biological imaging
What can an image reveal and what remains unseen?
Imaging methods reveal biological structures, molecular distributions and changes over time. The information an image provides depends on sample preparation, labelling, resolution and appropriate experimental controls.
04
Experimental models
Which model can meaningfully answer a research question?
Cell lines, primary cells and three-dimensional cultures offer different ways to investigate biology. Model selection requires balancing biological relevance, experimental control and reproducibility, while recognising what each system cannot represent.
03 / Inside a biological mechanism
From a molecular message
to a cellular response.
A signal outside a cell can influence events within it. Explore a simplified pathway to understand how reception, intracellular signalling and biological responses connect.
An example of cell-surface signalling
Extracellular signal
A signalling molecule reaches the cell
Cell-surface receptor
Signal reception at the membrane
Intracellular signalling
Molecular interactions relay information
Cellular response
Changes in activity, expression or behaviour
Open each stage to take a closer look.
01 Receive the message
In this example, a signalling molecule binds to a compatible receptor at the cell surface. Receptor activation initiates changes inside the cell. The response depends on the receptor and the cell’s biological context.
Research perspective:
binding studies and receptor-localisation experiments
investigate different aspects of signal reception.
02 Relay the information
Activated receptors can influence proteins and other signalling molecules within the cell. Depending on the pathway, these events may involve phosphorylation, second messengers or changes in protein interactions.
Research perspective:
phosphoprotein assays and live-cell reporters can help
examine selected signalling events over time.
03 Observe the response
Signalling may alter enzyme activity, gene expression, secretion, movement or cell division. A response can occur rapidly or develop over a longer period, depending on the processes involved.
Research perspective:
RT-qPCR, protein analysis and imaging measure different
aspects of a response and provide complementary evidence.
04 Test the explanation
An observed change does not establish which pathway caused it. Researchers compare suitable controls, examine timing and use complementary approaches to test whether a proposed mechanism explains their observations.
Research perspective:
perturbation experiments, dose comparisons and independent
measurements help assess a mechanistic interpretation.
Continue exploring / Biological mechanisms
Take the mechanism
one question further.
mRNA and Protein Expression: Why the Results Can Differ
Understand how RNA stability, translation and protein turnover shape expression, and why RNA and protein measurements provide complementary information.
Understand expression differencesImmunofluorescence: Exploring Where Proteins Are Located
Discover how antibody-based fluorescence reveals protein distribution, with attention to sample preparation, controls and image interpretation.
Explore immunofluorescence04 / Scientific foundations
The molecular foundations
of biological research.
Explore four connected subjects that underpin the study of genes, proteins and cells. Each subject brings together fundamental principles, experimental approaches and applications.
Molecular recognition
Antibodies & Immunodetection
Antibodies recognise molecular structures called epitopes. This interaction underpins techniques used to detect, localise and study proteins in biological samples. Specificity and experimental context are central to interpreting the resulting signals.
Antibody structure · Antigen recognition · Immunoblotting · Immunofluorescence · Validation
Explore antibodies & immunodetection
DNA & RNA analysis
Nucleic Acid Amplification
Amplification methods enable the study of selected nucleic acid sequences. PCR, qPCR and reverse transcription workflows support applications ranging from DNA analysis to gene expression studies, with interpretation shaped by assay design and experimental controls.
PCR principles · Quantitative PCR · Reverse transcription · Assay design · Internal controls
Explore nucleic acid amplification
Protein science
Protein Expression & Function
Protein function depends on molecular structure, folding, interactions and biological context. Recombinant expression provides a way to produce proteins for research, while purification and characterisation help establish their properties for specific experiments.
Expression systems · Protein folding · Purification · Molecular interactions · Biological activity
Explore protein expression & function
Experimental measurement
Biological Assays & Measurement
Biological assays translate selected molecular or cellular properties into measurable signals. Understanding assay principles, calibration and sample effects helps connect an experimental readout with the biological process being investigated.
ELISA · Enzyme activity · Cellular assays · Calibration · Sensitivity · Interpretation
Explore biological assays & measurement05 / Methods under the microscope
One biological question.
Different ways to look.
Every method reveals a particular aspect of biology. Explore what common techniques measure, where they are useful and what their results cannot establish alone.
01 RT-qPCR RNA & gene expression Does the abundance of a selected RNA change?
What it measures
Selected RNA targets are converted to complementary DNA, then amplified with fluorescence monitoring to estimate their abundance using an appropriate analysis strategy.
When it helps
Comparing selected transcripts between experimental conditions or examining changes following a treatment.
Keep in perspective
RNA abundance does not establish protein abundance or activity. RNA quality, assay performance, controls and suitable normalisation affect interpretation.
02 ELISA Targeted analyte measurement How much of a selected analyte is present?
What it measures
Antibody-based recognition generates a measurable signal. Quantitative assays estimate analyte concentration by comparison with suitable standards.
When it helps
Measuring cytokines, soluble proteins or other compatible analytes in sample types supported by the assay.
Keep in perspective
Matrix effects, cross-reactivity and the assay range influence results. Detected concentration does not necessarily indicate biological activity.
03 Fluorescence microscopy Spatial organisation & imaging Where is a labelled structure or molecule located?
What it measures
Fluorescent signals reveal labelled structures or molecules within the spatial and temporal resolution of the imaging system.
When it helps
Investigating cellular organisation, protein localisation or changes in labelled cells over time.
Keep in perspective
Labelling specificity, background and acquisition settings matter. Overlapping signals do not, by themselves, demonstrate a direct molecular interaction.
04 Flow cytometry Single-cell measurements How do measured characteristics vary across cells?
What it measures
Light scatter and fluorescence signals are recorded from individual events, enabling analysis of labelled cells within a population.
When it helps
Characterising cell populations, comparing marker expression or assessing viability with suitable reagents.
Keep in perspective
Sample preparation, instrument settings, gating and appropriate controls shape the analysis. Conventional flow cytometry does not show subcellular localisation.
06 / The evidence behind the science
Look beyond the finding.
Explore the evidence.
Scientific understanding grows through experiments, critical evaluation and transparent methods. Explore selected publications and the questions they help address.
When a negative signal needs a second question.
Does an absent target signal reflect the sample, or a problem with amplification? Michel and colleagues describe a SARS-CoV-2 RT-PCR protocol incorporating internal controls, including the artificial KoMa sequence for monitoring potential PCR inhibition.
Why this matters
Controls help distinguish different explanations for an experimental result. Their interpretation depends on the assay design and the conditions evaluated.
Resource-efficient internally controlled in-house
real-time PCR detection of SARS-CoV-2.
Read the original publication
Can another researcher assess the experiment?
The original MIQE guidelines set out experimental information needed to evaluate and reproduce qPCR studies, placing transparency at the centre of interpreting results.
The MIQE guidelines: minimum information for publication
of quantitative real-time PCR experiments.
View the publication record
What supports an antibody’s specificity?
Uhlen and colleagues propose complementary strategies for antibody validation, helping researchers examine whether a reagent recognises its intended target in the application being studied.
A proposal for validation of antibodies.
Read the original publication
08 / Scientific enquiries
A question to explore?
Let’s start there.
Contact KomaGene Biotech about a research product, its documentation or a topic featured on our website. Tell us what you are investigating and the information you need.
Contact KomaGene Biotech [email protected]What would you like to discuss?
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02
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Ask about a datasheet, protocol or documented application. Include the relevant product reference and the detail you would like to clarify.
03
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Continue exploring the science or browse research tools for your next experiment.
Scientific reading / Explore further
Follow your curiosity.
Go deeper into the science.
Explore biological questions through focused explanations, method comparisons and examples from published research.
Cellular communication
How Cells Communicate: From Molecular Signals to Biological Responses
Explore receptors, intracellular signalling and the experiments used to investigate how cells respond to their surroundings.
Explore cell communicationMolecular methods
PCR, qPCR and RT-qPCR: Differences, Applications and Controls
Understand how these techniques differ, what each measures and which experimental considerations matter when choosing an approach.
Compare PCR methodsControls & interpretation
Understanding PCR Internal Controls: The Published KoMa Example
Examine the purpose of internal controls and discover how KoMa was used in a published RT-PCR protocol to monitor potential inhibition.
Understand internal controls07 / About KomaGene Biotech
Scientific curiosity.
Practical perspective.
We bring scientific explanations, experimental methods and research products into one connected space.
KomaGene Biotech
Biological questions · Research methods · Laboratory tools
KomaGene Biotech is a scientific information and research products company. Our purpose is to make biological concepts easier to explore and product information easier to assess.
01
Explain the science clearly
We connect molecular mechanisms with the questions researchers ask, using accessible explanations that retain the scientific context.
02
Keep evidence in view
Our scientific features link to published sources and consider what methods can reveal, alongside the limitations that shape interpretation.
03
Connect questions with research tools
We introduce relevant product families and highlight the specifications, applications and documentation to consider when assessing a laboratory reagent.
Scientific understanding
Experimental context
Informed product selection