THE HUMAN PROTEIN ATLAS BLOG

Image of the week - Halloween edition!!! BAT3

2016-10-31   |   0 Comments
Cell Atlas Image of the week

Happy Halloween!!!

This week we look at a very spooky protein, BAT3 which localizes to the nucleoplasm (looks like jack o'lanterns if you squint hard enough) and cytoplasm of the cell as seen in Figure 1 in A-431 cells.

In addition to having a spooky name, this protein, also known as BAG6, was first identified as being involved in programmed cell death (apoptosis). Subsequent studies have revealed that BAT3 plays a role in many important cellular processes including gene regulation, protein synthesis, protein quality control, and protein degradation (Binici J & Koch J. 2014)...Read more


Important link between genomics and proteomics

2016-10-25   |   0 Comments
Genomics Mass Spectrometry Proteomics

Several previous reports have concluded that RNA levels cannot be used to predict protein levels. However, in a new study from KTH Royal Institute of Technology, published in the journal Molecular Systems Biology scientists from the Human Protein Atlas show that protein levels can be predicted from RNA levels if a gene-specific RNA-to-protein factor is used.

The human genome consists of DNA, a molecule that contains the instructions needed to build and maintain cells. For the instructions to be carried out, DNA must be read and transcribed into RNA transcripts that can be used to produce protein. The transcriptome is a collection of all the transcripts present in a cell...Read more


Image of the week - the Kinetochore

2016-10-22   |   0 Comments
Cell Atlas Cytokinetic bridge Image of the week Kinetochore

It's time for another HPA image of the week! This week we would like to tease an annotation that is not yet publicly available, but is coming soon in the December 4 release of the Cell Atlas.

During the cell cycle, each chromosome containing your DNA replicates. During mitosis, each chromosome lines up with its copy in the middle of the cell. At this point, the copies of each chromosome are pulled apart from each other via a structure called the mitotic spindle. In order for this chromosomal separation to happen correctly, the two copies of each chromosome must be attached to the microtubules via the kinetochore ( DeLuca J.G. et al 2002)...Read more


Affinity proteomics for plasma biomarker screening

2016-10-18   |   0 Comments
Affinity proteomics Biomarkers Plasma

Graphical representation of the study

In a recent study, published in Blood, researchers have used affinity reagents from the Human Protein Atlas project to analyze plasma samples to identify candidate protein markers associated with risk of venous thromboembolism.

Venous thromboembolism is the third most common cardiovascular disease and a leading cause of death and disability worldwide. Complex interactions between genetic, environmental and acquired risk factors underlie disease development. The first step in the process of developing clinically applicable predictive tools is the identification of novel markers that associate with the disease...Read more


Understanding endothelium in health and disease

2016-10-11   |   0 Comments

Graphical abstract of the study

In a recent publication in Cell Systems researchers have identified endothelial biomarkers that provide potential vascular drug targets and candidates for functional studies to increase understanding of the endothelium in health and disease.

Endothelial cells line the inside of all vessels and have a critical role in the regulation of hemostasis, inflammation, defense against blood borne pathogens, vascular tone, angiogenesis, and the transport of molecules and nutrients to and from the blood stream.

Proteins critical for these specialized functions tend to be predominantly expressed in endothelial cells across vascular beds...Read more


Image of the week - Autophagy and the nobel prize

2016-10-09   |   0 Comments
autophagy Image of the week nobel prize

Figure 1. taining of DRAM2 (green) with DNA (blue) and microtubules (red) in U-2 OS cells.

This week the 2016 Nobel Prize in Physiology or Medicine was announced and has been awarded to Yoshinori Ohsumi for his work in with understanding autophagy. Congratulations to Dr. Ohsumi on his well deserved award! Please read the link above for a great and brief explanation of Dr. Ohsumi's contributions and other important discoveries related to autophagy.

This week we highlight DNA damage regulated autophagy modulator 2 (DRAM2), a well known inhibitor of autophagy. Figure 1 shows an example of DRAM2 in U2 OS human osteosarcoma cells...Read more


Milestone reached – 50 000 antibodies passed

2016-10-04   |   0 Comments
Antibody Microarray Antibody Validation

Eni Andersson, Cecilia Mattson, Cecilia Hellström, Jennie Olofsson, Peter Nilsson

The Human Protein Atlas has since the first array validated antibody in November 2004 now passed 50 000 protein microarray validated antibodies.

The Human Protein Atlas contains information for a large majority of all human protein-coding genes regarding the expression and localization of the corresponding proteins based on both RNA and protein data. For the protein data, antibodies are used to show localization, and now 50 000 antibodies have been produced and verified within the project.

– This is a true heroic effort, says professor Peter Nilsson, site director at the SciLifeLab-site in Stockholm...Read more