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Tang VT, Abbineni PS, Veiga Leprevost FD, Basrur V, Khoriaty R, Emmer BT, Nesvizhskii AI, Ginsburg D. Identification of LMAN1- and SURF4-Dependent Secretory Cargoes. J Proteome Res 2023; 22:3439-3446. [PMID: 37844105 PMCID: PMC10629478 DOI: 10.1021/acs.jproteome.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Indexed: 10/18/2023]
Abstract
Most proteins secreted into the extracellular space are first recruited from the endoplasmic reticulum into coat protein complex II (COPII)-coated vesicles or tubules that facilitate their transport to the Golgi apparatus. Although several secreted proteins have been shown to be actively recruited into COPII vesicles and tubules by the cargo receptors LMAN1 and SURF4, the full cargo repertoire of these receptors is unknown. We now report mass spectrometry analysis of conditioned media and cell lysates from HuH7 cells CRISPR targeted to inactivate the LMAN1 or SURF4 gene. We found that LMAN1 has limited clients in HuH7 cells, whereas SURF4 traffics a broad range of cargoes. Analysis of putative SURF4 cargoes suggests that cargo recognition is governed by complex mechanisms rather than interaction with a universal binding motif..
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Affiliation(s)
- Vi T. Tang
- Department
of Molecular and Integrative Physiology and Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Prabhodh S. Abbineni
- Life
Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Microbiology and Immunology, Loyola University
Chicago Stritch School of Medicine, Maywood, Illinois 60153, United States
| | | | - Venkatesha Basrur
- Department
of Pathology, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Rami Khoriaty
- Department
of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Cell and Developmental Biology, University
of Michigan, Ann Arbor, Michigan 48109, United States
| | - Brian T. Emmer
- Department
of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Alexey I. Nesvizhskii
- Department
of Pathology, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - David Ginsburg
- Life
Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Human Genetics, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan 48109, United States
- Howard
Hughes Medical Institute, University of
Michigan, Ann Arbor, Michigan 48109, United States
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Tang VT, Abbineni PS, Leprevost FDV, Basrur V, Emmer BT, Nesvizhskii AI, Ginsburg D. Identification of LMAN1 and SURF4 dependent secretory cargoes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.06.535922. [PMID: 37066360 PMCID: PMC10104123 DOI: 10.1101/2023.04.06.535922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Most proteins secreted into the extracellular space are first recruited from the endoplasmic reticulum into coat protein complex II (COPII)-coated vesicles or tubules that facilitate their transport to the Golgi apparatus. Although several secreted proteins have been shown to be actively recruited into COPII vesicles/tubules by the cargo receptors LMAN1 and SURF4, the full cargo repertoire of these receptors is unknown. We now report mass spectrometry analysis of conditioned media and cell lysates from HuH7 cells CRISPR targeted to inactivate the LMAN1 or SURF4 gene. We found that LMAN1 has limited clients in HuH7 cells whereas SURF4 traffics a broad range of cargoes. Analysis of putative SURF4 cargoes suggests that cargo recognition is governed by complex mechanisms rather than interaction with a universal binding motif.
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Affiliation(s)
- Vi T. Tang
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI
- Life Sciences Institute, University of Michigan, Ann Arbor, MI
| | | | | | | | - Brian T. Emmer
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - Alexey I. Nesvizhskii
- Department of Pathology, University of Michigan, Ann Arbor, MI
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI
| | - David Ginsburg
- Life Sciences Institute, University of Michigan, Ann Arbor, MI
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI
- Department of Human Genetics, University of Michigan, Ann Arbor, MI
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
- Howard Hughes Medical Institute, University of Michigan, Ann Arbor, MI
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Tang VT, Ginsburg D. Cargo selection in endoplasmic reticulum-to-Golgi transport and relevant diseases. J Clin Invest 2023; 133:163838. [PMID: 36594468 PMCID: PMC9797344 DOI: 10.1172/jci163838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Most proteins destined for the extracellular space or various intracellular compartments must traverse the intracellular secretory pathway. The first step is the recruitment and transport of cargoes from the endoplasmic reticulum (ER) lumen to the Golgi apparatus by coat protein complex II (COPII), consisting of five core proteins. Additional ER transmembrane proteins that aid cargo recruitment are referred to as cargo receptors. Gene duplication events have resulted in multiple COPII paralogs present in the mammalian genome. Here, we review the functions of each COPII protein, human disorders associated with each paralog, and evidence for functional conservation between paralogs. We also provide a summary of current knowledge regarding two prototypical cargo receptors in mammals, LMAN1 and SURF4, and their roles in human health and disease.
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Affiliation(s)
- Vi T. Tang
- Department of Molecular and Integrative Physiology,,Life Sciences Institute
| | - David Ginsburg
- Life Sciences Institute,,Department of Internal Medicine,,Department of Human Genetics,,Department of Pediatrics and Communicable Diseases, and,Howard Hughes Medical Institute, University of Michigan, Ann Arbor, Michigan, USA
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Makalowska I, Lin CF, Makalowski W. Overlapping genes in vertebrate genomes. Comput Biol Chem 2005; 29:1-12. [PMID: 15680581 DOI: 10.1016/j.compbiolchem.2004.12.006] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2004] [Revised: 12/15/2004] [Accepted: 12/15/2004] [Indexed: 11/19/2022]
Abstract
Overlapping genes in mammalian genomes are unexpected phenomena even though hundreds of pairs of protein coding overlapping genes have been reported so far. Overlapping genes can be divided into different categories based on direction of transcription as well as on sequence segments being shared between overlapping coding regions. The biologic functions of natural antisense transcripts, their involvement in physiological processes and gene regulation in living organisms are not fully understood. Number of documented examples indicates that they may exert control at various levels of gene expression, such as transcription, mRNA processing, splicing, stability, transport, and translation. Similarly, evolutionary origin of such genes is not known, existing hypotheses can explain only selected cases of mammalian gene overlaps which could originate as result of rearrangements, overprinting and/or adoption of signals in the neighboring gene locus.
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Affiliation(s)
- Izabela Makalowska
- The Huck Institute of the Life Sciences, The Pennsylvania State University, 502 Wartik Lab, University Park, PA 16802, USA.
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Abstract
The human Surfeit locus contains at least six tightly clustered genes (Surf-1 to Surf-6) of which five (Surf-1 to Surf-5) have been characterised and found not to share any sequence homology. The organisation and juxtaposition of the Surfeit genes are conserved between human and mouse. The Surf-6 gene that encodes a novel nucleolar-matrix protein with nucleic-acid binding properties has been characterised in mouse. In this work, we have isolated and analysed the human Surf-6 homologue and determined its genomic organisation in the Surfeit locus. The human Surf-6 gene has five exons spread over a distance of 4.3kb and has features of a housekeeping gene being ubiquitously expressed, having its 5' end located within a CpG rich island and lacking a canonical TATA box. The intragenic region between the 3' end of the Surf-5 gene and the 5' end of the Surf-6 gene is 3.2kb and contains a pseudogene of the ribosomal protein gene rpL21. The putative human Surf-6 protein is 361 amino acids long and includes motifs found in both the mouse and fish Surf-6 homologues, which may underlie the functions of Surf-6. Three amino acid polymorphisms have been detected at codons 163, 175 and 311 by SSCP analysis.
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Affiliation(s)
- C Magoulas
- Division of Neurophysiology, National Institute for Medical Research, The Ridgeway, Mill Hill, London, UK.
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Poyau A, Buchet K, Godinot C. Sequence conservation from human to prokaryotes of Surf1, a protein involved in cytochrome c oxidase assembly, deficient in Leigh syndrome. FEBS Lett 1999; 462:416-20. [PMID: 10622737 DOI: 10.1016/s0014-5793(99)01571-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The human SURF1 gene encoding a protein involved in cytochrome c oxidase (COX) assembly, is mutated in most patients presenting Leigh syndrome associated with COX deficiency. Proteins homologous to the human Surf1 have been identified in nine eukaryotes and six prokaryotes using database alignment tools, structure prediction and/or cDNA sequencing. Their sequence comparison revealed a remarkable Surf1 conservation during evolution and put forward at least four highly conserved domains that should be essential for Surf1 function. In Paracoccus denitrificans, the Surf1 homologue is found in the quinol oxidase operon, suggesting that Surf1 is associated with a primitive quinol oxidase which belongs to the same superfamily as cytochrome oxidase.
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Affiliation(s)
- A Poyau
- Centre de Génétique Moléculaire et Cellulaire, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon I, Villeurbanne, France
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Abstract
The organization of the human Surfeit locus containing the six sequence-unrelated housekeeping genes Surf-1 to Surf-6 (HGMW-approved symbols SURF1-SURF6) has been determined. The human surfeit locus occupies about 60 kb of DNA, and the tightly clustered gene organization and the juxtaposition of the human genes are similar to the mouse and chicken surfeit loci with the 5' end of each gene associated with a CpG-rich island. Whereas in the mouse the Surf-2 and Surf-4 genes overlap at their 3' ends, the human Surf-2 and Surf-4 genes have been found to be separated by 302 bp due to a much shorter 3' untranslated region in the human Surf-2 gene. The distance between the 3' ends of the human Surf-1 and Surf-3 genes is 374 bp, and the distance between the 5' ends of the human Surf-3 and Surf-5 genes is only 112 bp. Unusually the human Surf-5 gene contains an intron in its 5' untranslated region not found in the mouse or rat Surf-5 genes. This additional intron is also found in the Surf-5 gene of both Old and New World monkeys, being generated before the divergence of human and prosimians but after the divergence of primates and rodents. A contig of 200 kb containing the human Surfeit locus has been constructed from overlapping cosmid, P1, and PAC clones. Approximately 40 kb proximal to the 3' end of the Surf-6 gene, the 5' region of the ABO glycosyltransferase gene has been detected. This allows us to determine the orientation of the Surfeit and ABO loci with respect to each other and to the telomere and centromere of human chromosome 9.
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Affiliation(s)
- T Duhig
- Eukaryotic Gene Organisation and Expression Laboratory, Imperial Cancer Research Fund, Lincoln's Inn Fields, London, WC2A 3PX, United Kingdom
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Armes N, Gilley J, Fried M. The comparative genomic structure and sequence of the surfeit gene homologs in the puffer fish Fugu rubripes and their association with CpG-rich islands. Genome Res 1997; 7:1138-52. [PMID: 9414319 DOI: 10.1101/gr.7.12.1138] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The puffer fish Fugu rubripes (Fugu) has a compact genome approximately one-seventh the size of man, mainly owing to small intron size and the presence of few dispersed repetitive DNA elements, which greatly facilitates the study of its genes at the genomic level. It has been shown previously that, whereas the Surfeit genes are tightly clustered at a single locus in mammals and birds, the genes are found at three separate loci in the Fugu genome. Here, Fugu gene homologs of all six Surfeit genes (Surf-1 to Surf-6) have been cloned and sequenced, and their gene structure has been compared with that of their mammalian and avian homologs. The predicted protein products of each gene are well conserved between vertebrate species, and in most cases their gene structures are identical to their mammalian and avian homologs except for the Fugu Surf-6 gene, which was found to lack an intron present in the mouse gene. In addition, we have identified conserved regulatory elements at the 5' and 3' ends of the Surf-3/rpL7a gene by comparison with the mammalian and chicken Surf-3/rpL7a gene homologs, including the presence of a polypyrimidine tract at the extreme 5' end of this ribosomal protein gene. The Fugu Surfeit gene homologs appear to be associated with CpG-rich islands, like the Surfeit genes in higher vertebrates, but these Fugu CpG islands are similar to the nonclassical islands characteristic of other fish species. Our observations support the use of the Fugu genome to study vertebrate gene structure, to predict the structure of mammalian genes, and to identify vertebrate regulatory elements. [The sequence data described in this paper have been submitted to the data library under accession nos. Y15170 (Surf-2, Surf-4), Y15171 (Surf-3, Surf-1, Surf-6), and Y15172 (Surf-5.)]
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Affiliation(s)
- N Armes
- Eukaryotic Gene Organisation and Expression Laboratory, Imperial Cancer Research Fund, Lincoln's Inn Fields, London WC2A 3PX, UK
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