SIGN IN YOUR ACCOUNT TO HAVE ACCESS TO DIFFERENT FEATURES

FORGOT YOUR PASSWORD?

FORGOT YOUR DETAILS?

AAH, WAIT, I REMEMBER NOW!
24/7 HELPLINE (903) 212-7500
  • PATIENT PORTAL LOGIN

PhyNet Health PhyNet Health

  • Home
  • Find a Clinic
    • Hughes Springs, TX
    • Longview, TX
    • Jefferson, TX
    • Kilgore, TX
    • Lindale, TX
    • Linden, TX
    • Gladewater, TX
    • Lone Star, TX
    • Tatum, TX
    • Marshall, TX
  • Health Services
    • Primary Care Services
    • Physical Therapy / Rehab
    • Allergy Testing & Treatment
    • Chronic Care Management
    • Remote Monitoring Program
    • Virtual Visit
  • Resources
    • MedlinePlus Wiki
      • Health Topics
    • Home Health Coordination
    • Transitions of Care
    • Insurance Help
  • About Phynet
    • About Phynet
    • PhyNet News
    • Better Together Stories
    • Careers
  • Billing

Health Topics

Skip navigation

An official website of the United States government

Here’s how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( Lock Locked padlock icon ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Institutes of Health National Library of Medicine
MedlinePlus Trusted Health Information for You
  • Health Topics
  • Drugs & Supplements
  • Genetics
  • Medical Tests
  • Medical Encyclopedia
  • About MedlinePlus
  • About MedlinePlus
  • What's New
  • Site Map
  • Customer Support
  • Health Topics
  • Drugs & Supplements
  • Genetics
  • Medical Tests
  • Medical Encyclopedia
You Are Here:
Home →
Genetics →
Genes →
TSEN2 gene
URL of this page: https://medlineplus.gov/genetics/gene/tsen2/

TSEN2 gene

tRNA splicing endonuclease subunit 2

Normal Function

The TSEN2 gene provides instructions for making one part (subunit) of an enzyme called the tRNA splicing endonuclease complex. This complex helps process several types of RNA molecules, which are chemical cousins of DNA.

The tRNA splicing endonuclease complex is particularly important for the normal processing of a form of RNA known as transfer RNA (tRNA). tRNA molecules help assemble protein building blocks called amino acids into full-length proteins. However, before they can assemble proteins, tRNAs must be processed into mature molecules. In particular, regions called introns need to be removed from some tRNAs for the molecules to be functional. The tRNA splicing endonuclease complex recognizes and then removes introns to help produce mature tRNA molecules.

Studies suggest that the tRNA splicing endonuclease complex may also be involved in processing another form of RNA known as messenger RNA (mRNA). mRNA serves as a genetic blueprint for making proteins. Researchers suspect that the tRNA splicing endonuclease complex cuts (cleaves) one end of mRNA molecules so a string of adenines (one of the building blocks of RNA) can be added. This process is known as polyadenylation, and the string of adenines is known as a poly(A) tail. The poly(A) tail signals the stopping point for protein production and protects mRNA from being broken down before protein production occurs.

Health Conditions Related to Genetic Changes

Pontocerebellar hypoplasia

At least four mutations in the TSEN2 gene have been identified in people with a disorder of brain development called pontocerebellar hypoplasia. The major features of this condition include delayed development, problems with movement, and intellectual disability. TSEN2 gene mutations cause a small percentage of all cases of a form of the disorder designated pontocerebellar hypoplasia type 2 (PCH2). When PCH2 results from TSEN2 gene mutations, it is sometimes categorized more specifically as PCH2B.

The TSEN2 gene mutations that cause PCH2B impair the function of the tRNA splicing endonuclease complex, which likely disrupts the processing of RNA molecules and affects the production of many types of proteins. Before birth, these changes appear to have the most severe impact on fast-growing tissues, such as those in the brain. However, it is unknown exactly how reduced function of the tRNA splicing endonuclease complex leads to abnormal brain development in people with this condition.

More About This Health Condition

Other Names for This Gene

  • HsSen2
  • MGC2776
  • MGC4440
  • SEN2
  • SEN2_HUMAN
  • SEN2L
  • tRNA splicing endonuclease 2 homolog (S. cerevisiae)
  • tRNA-intron nuclease 2

Additional Information & Resources

Tests Listed in the Genetic Testing Registry

  • Tests of TSEN2 From the National Institutes of Health

Scientific Articles on PubMed

  • PubMed From the National Institutes of Health

Catalog of Genes and Diseases from OMIM

  • tRNA SPLICING ENDONUCLEASE, SUBUNIT 2; TSEN2

Gene and Variant Databases

  • NCBI Gene From the National Institutes of Health
  • ClinVar From the National Institutes of Health

References

  • Bailey KA, Aldinger KA. Mutations in the tRNA splicing endonuclease complex cause pontocerebellar hypoplasia. Clin Genet. 2009 May;75(5):427-8. doi: 10.1111/j.1399-0004.2009.01186_3.x. No abstract available. Citation on PubMed
  • Bierhals T, Korenke GC, Uyanik G, Kutsche K. Pontocerebellar hypoplasia type 2 and TSEN2: review of the literature and two novel mutations. Eur J Med Genet. 2013 Jun;56(6):325-30. doi: 10.1016/j.ejmg.2013.03.009. Epub 2013 Apr 3. Citation on PubMed
  • Budde BS, Namavar Y, Barth PG, Poll-The BT, Nurnberg G, Becker C, van Ruissen F, Weterman MA, Fluiter K, te Beek ET, Aronica E, van der Knaap MS, Hohne W, Toliat MR, Crow YJ, Steinling M, Voit T, Roelenso F, Brussel W, Brockmann K, Kyllerman M, Boltshauser E, Hammersen G, Willemsen M, Basel-Vanagaite L, Krageloh-Mann I, de Vries LS, Sztriha L, Muntoni F, Ferrie CD, Battini R, Hennekam RC, Grillo E, Beemer FA, Stoets LM, Wollnik B, Nurnberg P, Baas F. tRNA splicing endonuclease mutations cause pontocerebellar hypoplasia. Nat Genet. 2008 Sep;40(9):1113-8. doi: 10.1038/ng.204. Citation on PubMed
  • Namavar Y, Barth PG, Kasher PR, van Ruissen F, Brockmann K, Bernert G, Writzl K, Ventura K, Cheng EY, Ferriero DM, Basel-Vanagaite L, Eggens VR, Krageloh-Mann I, De Meirleir L, King M, Graham JM Jr, von Moers A, Knoers N, Sztriha L, Korinthenberg R; PCH Consortium; Dobyns WB, Baas F, Poll-The BT. Clinical, neuroradiological and genetic findings in pontocerebellar hypoplasia. Brain. 2011 Jan;134(Pt 1):143-56. doi: 10.1093/brain/awq287. Epub 2010 Oct 15. Citation on PubMed
DNA helix

Genomic Location

The TSEN2 gene is found on chromosome 3.

Related Health Topics

  • Genes and Gene Therapy
  • Genetic Disorders

MEDICAL ENCYCLOPEDIA

  • Genes
  • Genetics

Understanding Genetics

  • What is DNA?
  • What is a gene?
  • What is a gene variant and how do variants occur?

Disclaimers

MedlinePlus links to health information from the National Institutes of Health and other federal government agencies. MedlinePlus also links to health information from non-government Web sites. See our disclaimer about external links and our quality guidelines.

The information on this site should not be used as a substitute for professional medical care or advice. Contact a health care provider if you have questions about your health.

  • About MedlinePlus
  • What's New
  • Site Map
  • Customer Support
  • Subscribe to RSSRSS
  • Connect with NLM
  • NLM Web Policies
  • Copyright
  • Accessibility
  • Guidelines for Links
  • Viewers & Players
  • HHS Vulnerability Disclosure
  • MedlinePlus Connect for EHRs
  • For Developers
National Library of Medicine 8600 Rockville Pike, Bethesda, MD 20894 U.S. Department of Health and Human Services National Institutes of Health
Last updated November 1, 2014
Return to top

Patients

  • Find a Clinic
  • Health Services
  • Complex Case Management
  • MA / Medicare Assistance

Quick Links

  • Billing Information
  • Careers
  • About Phynet
  • PhyNet News

Network Links

  • PrimeCareHomeHealth.com
  • PrimeCareNet.com
  • PrimeCareManagers.com
  • Core-Rehab.com

Home Office

4002 Technology Center Longview TX 75605
Phone: (903) 247-0484
Fax: (903) 247-0485
[email protected]
  • PrimeCareHomeHealth.com
  • PrimeCareNet.com
  • PrimeCareManagers.com
  • Core-Rehab.com
  • GET SOCIAL

© 2021 PhyNet Health • All rights reserved
YOUR LIFE. YOUR CHOICE.

TOP