COG2

Component of oligomeric golgi complex 2
Identifiers
Symbols	COG2 ; LDLC
External IDs	OMIM: 606974 MGI: 1923582 HomoloGene: 7206 GeneCards: COG2 Gene
Gene ontology Molecular function • protein binding • protein transporter activity • protein complex binding Cellular component • Golgi membrane • Golgi stack • cytosol • Golgi transport complex Biological process • protein glycosylation • intracellular protein transport • intra-Golgi vesicle-mediated transport • Golgi organization • oligosaccharide biosynthetic process Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	22796	76332
Ensembl	ENSG00000135775	ENSMUSG00000031979
UniProt	Q14746	Q921L5
RefSeq (mRNA)	NM_001145036	NM_029746
RefSeq (protein)	NP_001138508	NP_084022
Location (UCSC)	Chr 1: 230.64 – 230.69 Mb	Chr 8: 124.52 – 124.55 Mb
PubMed search

Conserved oligomeric Golgi complex subunit 2 is a protein that in humans is encoded by the COG2 gene.^[1][2] Multiprotein complexes are key determinants of Golgi apparatus structure and its capacity for intracellular transport and glycoprotein modification. Several complexes have been identified, including the Golgi transport complex (GTC), the LDLC complex, which is involved in glycosylation reactions, and the SEC34 complex, which is involved in vesicular transport. These 3 complexes are identical and have been termed the conserved oligomeric Golgi (COG) complex, which includes COG2 (Ungar et al., 2002).[supplied by OMIM]^[2]

Model organisms

Cog2 knockout mouse phenotype

Characteristic	Phenotype
Homozygote viability	Abnormal
Recessive lethal study	Normal
Fertility	Normal
Body weight	Normal
Anxiety	Normal
Neurological assessment	Normal
Grip strength	Normal
Hot plate	Normal
Dysmorphology	Normal
Indirect calorimetry	Normal
Glucose tolerance test	Normal
Auditory brainstem response	Normal
DEXA	Normal
Radiography	Normal
Body temperature	Normal
Eye morphology	Normal
Clinical chemistry	Normal
Haematology	Normal
Peripheral blood lymphocytes	Normal
Micronucleus test	Normal
Heart weight	Normal
Skin Histopathology	Normal
Brain histopathology	Normal
Salmonella infection	Normal[3]
Citrobacter infection	Normal[4]
All tests and analysis from[5][6]

Model organisms have been used in the study of COG2 function. A conditional knockout mouse line, called Cog2^{tm1a(KOMP)Wtsi[7][8]} was generated as part of the International Knockout Mouse Consortium program — a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists.^[9][10][11]

Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion.^[5][12] Twenty five were carried out on mutant mice and one significant abnormality was observed: no homozygous mutant mice survived until weaning. The remaining tests were carried out on heterozygous mutant adult mice; no additional significant abnormalities were observed in these animals.^[5][5]

Interactions

COG2 has been shown to interact with COG4^[13] and COG3.^[14]

References

1. Podos SD, Reddy P, Ashkenas J, Krieger M (Dec 1994). "LDLC encodes a brefeldin A-sensitive, peripheral Golgi protein required for normal Golgi function". J Cell Biol 127 (3): 679–91. doi:10.1083/jcb.127.3.679. PMC 2120235. PMID 7962052.
2. "Entrez Gene: COG2 component of oligomeric golgi complex 2".
3. "Salmonella infection data for Cog2". Wellcome Trust Sanger Institute.
4. "Citrobacter infection data for Cog2". Wellcome Trust Sanger Institute.
5. Gerdin AK (2010). "The Sanger Mouse Genetics Programme: High throughput characterisation of knockout mice". Acta Ophthalmologica 88: 925–7. doi:10.1111/j.1755-3768.2010.4142.x.
6. Mouse Resources Portal, Wellcome Trust Sanger Institute.
7. "International Knockout Mouse Consortium".
8. "Mouse Genome Informatics".
9. Skarnes, W. C.; Rosen, B.; West, A. P.; Koutsourakis, M.; Bushell, W.; Iyer, V.; Mujica, A. O.; Thomas, M.; Harrow, J.; Cox, T.; Jackson, D.; Severin, J.; Biggs, P.; Fu, J.; Nefedov, M.; De Jong, P. J.; Stewart, A. F.; Bradley, A. (2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature 474 (7351): 337–342. doi:10.1038/nature10163. PMC 3572410. PMID 21677750.
10. Dolgin E (2011). "Mouse library set to be knockout". Nature 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718.
11. Collins FS, Rossant J, Wurst W (2007). "A Mouse for All Reasons". Cell 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247.
12. van der Weyden L, White JK, Adams DJ, Logan DW (2011). "The mouse genetics toolkit: revealing function and mechanism.". Genome Biol 12 (6): 224. doi:10.1186/gb-2011-12-6-224. PMC 3218837. PMID 21722353.
13. Loh, Eva; Hong Wanjin (Jun 2004). "The binary interacting network of the conserved oligomeric Golgi tethering complex". J. Biol. Chem. (United States) 279 (23): 24640–8. doi:10.1074/jbc.M400662200. ISSN 0021-9258. PMID 15047703.
14. Loh, Eva; Hong Wanjin (Jun 2002). "Sec34 is implicated in traffic from the endoplasmic reticulum to the Golgi and exists in a complex with GTC-90 and ldlBp". J. Biol. Chem. (United States) 277 (24): 21955–61. doi:10.1074/jbc.M202326200. ISSN 0021-9258. PMID 11929878.

Further reading

• Salesiotis AN, Wang CK, Wang CD; et al. (1995). "Identification of novel genes from stomach cancer cell lines by differential display.". Cancer Lett. 91 (1): 47–54. doi:10.1016/0304-3835(95)03717-B. PMID 7750094.
• Loh E, Hong W (2002). "Sec34 is implicated in traffic from the endoplasmic reticulum to the Golgi and exists in a complex with GTC-90 and ldlBp.". J. Biol. Chem. 277 (24): 21955–61. doi:10.1074/jbc.M202326200. PMID 11929878.
• Ungar D, Oka T, Brittle EE; et al. (2002). "Characterization of a mammalian Golgi-localized protein complex, COG, that is required for normal Golgi morphology and function.". J. Cell Biol. 157 (3): 405–15. doi:10.1083/jcb.200202016. PMC 2173297. PMID 11980916.
• Strausberg RL, Feingold EA, Grouse LH; et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Loh E, Hong W (2004). "The binary interacting network of the conserved oligomeric Golgi tethering complex.". J. Biol. Chem. 279 (23): 24640–8. doi:10.1074/jbc.M400662200. PMID 15047703.
• Gerhard DS, Wagner L, Feingold EA; et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Rual JF, Venkatesan K, Hao T; et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network.". Nature 437 (7062): 1173–8. doi:10.1038/nature04209. PMID 16189514.
• Sohda M, Misumi Y, Yoshimura S; et al. (2007). "The interaction of two tethering factors, p115 and COG complex, is required for Golgi integrity.". Traffic 8 (3): 270–84. doi:10.1111/j.1600-0854.2006.00530.x. PMID 17274799.