Next Generation Proteomic Pipeline for Chromosome-Based Proteomic Research Using NeXtProt and GENCODE Databases

Heeyoun Hwang, Gun Wook Park, Ji Yeong Park, Hyun Kyoung Lee, Ju Yeon Lee, Ji Eun Jeong, Sung Kyu Robin Park, John R. Yates, Kyung Hoon Kwon, Young Mok Park, Hyoung Joo Lee, Young Ki Paik, Jin Young Kim, Jong Shin Yoo

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Abstract

Human Proteome Project aims to map all human proteins including missing proteins as well as proteoforms with post translational modifications, alternative splicing variants (ASVs), and single amino acid variants (SAAVs). neXtProt and Ensemble databases are usually used to provide curated information on human coding genes. However, to find these proteoforms, we (Chr #11 team) first introduce a streamlined pipeline using customized and concatenated neXtProt and GENCODE originated from Ensemble, with controlled false discovery rate (FDR). Because of large sized databases used in this pipeline, we found more stringent FDR filtering (0.1% at the peptide level and 1% at the protein level) to claim novel findings, such as GENCODE ASVs and missing proteins, from human hippocampus data set (MSV000081385) and ProteomeXchange (PXD007166). Using our next generation proteomic pipeline (nextPP) with neXtProt and GENCODE databases, two missing proteins such as activity-regulated cytoskeleton-associated protein (ARC, Chr 8) and glutamate receptor ionotropic, kainite 5 (GRIK5, Chr 19) were additionally identified with two or more unique peptides from human brain tissues. Additionally, by applying the pipeline to human brain related data sets such as cortex (PXD000067 and PXD000561), spinal cord, and fetal brain (PXD000561), seven GENCODE ASVs such as ACTN4-012 (Chr.19), DPYSL2-005 (Chr.8), MPRIP-003 (Chr.17), NCAM1-013 (Chr.11), EPB41L1-017 (Chr.20), AGAP1-004 (Chr.2), and CPNE5-005 (Chr.6) were identified from two or more data sets. The identified peptides of GENCODE ASVs were mapped onto novel exon insertions, alternative translations at 5′-untranslated region, or novel protein coding sequence. Applying the pipeline to male reproductive organ related data sets, 52 GENCODE ASVs were identified from two testis (PXD000561 and PXD002179) and a spermatozoa (PXD003947) data sets. Four out of 52 GENCODE ASVs such as RAB11FIP5-008 (Chr. 2), RP13-347D8.7-001 (Chr. X), PRDX4-002 (Chr. X), and RP11-666A8.13-001 (Chr. 17) were identified in all of the three samples.

Original languageEnglish
Pages (from-to)4425-4434
Number of pages10
JournalJournal of Proteome Research
Volume16
Issue number12
DOIs
Publication statusPublished - 2017 Dec 1

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All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Chemistry(all)

Cite this

Hwang, H., Park, G. W., Park, J. Y., Lee, H. K., Lee, J. Y., Jeong, J. E., Park, S. K. R., Yates, J. R., Kwon, K. H., Park, Y. M., Lee, H. J., Paik, Y. K., Kim, J. Y., & Yoo, J. S. (2017). Next Generation Proteomic Pipeline for Chromosome-Based Proteomic Research Using NeXtProt and GENCODE Databases. Journal of Proteome Research, 16(12), 4425-4434. https://doi.org/10.1021/acs.jproteome.7b00223