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Personal profile

Research Interests

My research interests lie in the field of host-pathogen interactions and how Klebsiella pneumoniae interacts and modulates host immunity.

I am currently investigating how Klebsiella pneumoniae takes control over host post-transcriptional modifications (SUMOylation and other ubiquin-like modifications) to alter cellular responses.




Teaching of the Generic Lab Skills Module on Western Blotting to PhD students in 2015 and 2016.

Mentorship of a master student (October 2015-August 2016).

Mentorship of a summer student as part of the CEM program (July-August 2016).


Fingerprint Dive into the research topics where Joana Margarida Sa Pessoa Graca Santos is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

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Klebsiella pneumoniae Medicine & Life Sciences
Klebsiella Infections Medicine & Life Sciences
Lipid A Medicine & Life Sciences
Virulence Medicine & Life Sciences
Microbial Drug Resistance Medicine & Life Sciences
Sugar Acids Medicine & Life Sciences
Acinetobacter baumannii Medicine & Life Sciences
Klebsiella Medicine & Life Sciences

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2017 2019

2-hydroxylation of Acinetobacter baumannii lipid A contributes to virulence

Bartholomew, T. L., Kidd, T. J., Sá Pessoa, J., Conde Álvarez, R. & Bengoechea, J. A., 25 Mar 2019, In : Infection and Immunity.

Research output: Contribution to journalArticle

Open Access
Acinetobacter baumannii
Lipid A

Social behaviour and making attachments: a report from the fifth 'Young Microbiologists Symposium on Microbe Signalling, Organisation and Pathogenesis'

An, S-Q., Ding, Y-C., Faber, F., Hobley, L. & Sá-Pessoa, J., 01 Feb 2019, In : Microbiology (Reading, England). 165, 2, p. 138-145 8 p.

Research output: Contribution to journalArticle

Social Behavior
Northern Ireland
1 Citation (Scopus)

The acetate uptake transporter family motif "NPAPLGL(M/S)" is essential for substrate uptake

Ribas, D., Soares-Silva, I., Vieira, D., Sousa-Silva, M., Sá-Pessoa, J., Azevedo-Silva, J., Viegas, S. C., Arraiano, C. M., Diallinas, G., Paiva, S., Soares, P. & Casal, M., 01 Jan 2019, In : Fungal Genetics and Biology. 122, p. 1-10

Research output: Contribution to journalArticle

Membrane Transport Proteins
2 Citations (Scopus)
Open Access
Klebsiella Infections
Klebsiella pneumoniae
Microbial Viability
5 Citations (Scopus)
Open Access
Klebsiella Infections
Klebsiella pneumoniae
Immune Evasion