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Expression of Recombinant Proteins in the Methylotrophic Yeast Pichia pastoris

Expression of Recombinant Proteins in the Methylotrophic Yeast Pichia pastoris

Published on: February 25, 2010

Refined Pichia pastoris reference genome sequence.

Lukas Sturmberger¹, Thomas Chappell², Martina Geier¹

¹Austrian Center of Industrial Biotechnology (ACIB), Petersgasse 14, 8010 Graz, Austria.

Journal of Biotechnology

|April 17, 2016

Summary

This summary is machine-generated.

A refined Komagataella phaffii (Pichia pastoris) reference genome was created by closing sequence gaps and manually curating open reading frames. This improved genome sequence enhances understanding of cellular functions in this key yeast species.

Keywords:

Centromere Genome Killer plasmid P. pastoris RNA-seq Splicing

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Area of Science:

Microbiology
Genomics
Molecular Biology

Background:

Komagataella phaffii (Pichia pastoris) is widely used for recombinant protein production and studying cellular processes.
Previous genome sequences contained errors, gaps, and incorrectly annotated open reading frames (ORFs).

Purpose of the Study:

To present a refined reference genome for Komagataella phaffii (Pichia pastoris).
To improve the accuracy of genomic information for P. pastoris strains.

Main Methods:

Genome and transcriptome sequencing from multiple P. pastoris strains.
Manual curation of putative open reading frames (ORFs) using RNA-seq and LC-MS/MS data.
Correction of sequence gaps, re-orientation of chromosomal fragments, and addition of new ORFs.

Main Results:

Closed 12 major sequence gaps and corrected over 500 genomic positions.
Manually curated and confirmed 5111 out of 5256 putative ORFs, reducing spliced genes from 797 to 571.
Added new ORFs, re-oriented chromosomal fragments, and included predicted centromeres and plasmid sequences.

Conclusions:

The refined reference genome provides a more accurate foundation for P. pastoris research.
This improved genome sequence will facilitate future studies in recombinant protein production and cellular biology.
The updated annotation and corrected sequences enhance the reliability of genomic analyses in P. pastoris.