6s5f

Structural highlights

Disease

RB39B_HUMAN NON RARE IN EUROPE: Autism;Early-onset parkinsonism-intellectual disability syndrome;X-linked non-syndromic intellectual disability. The disease is caused by variants affecting the gene represented in this entry. The disease is caused by variants affecting the gene represented in this entry. Its association with Parkinson disease is however unclear (PubMed:26739247, PubMed:27459931). According to a number of studies, variations affecting this gene are not a frequent cause of Parkinson disease, suggesting that RAB39B does not play a major role in Parkinson disease etiology (PubMed:26739247, PubMed:27459931).^{[1] [2]}

Function

RB39B_HUMAN Small GTPases Rab involved in autophagy (PubMed:27103069). The small GTPases Rab are key regulators of intracellular membrane trafficking, from the formation of transport vesicles to their fusion with membranes. Rabs cycle between an inactive GDP-bound form and an active GTP-bound form that is able to recruit to membranes different sets of downstream effectors directly responsible for vesicle formation, movement, tethering and fusion (PubMed:27103069). May regulate the homeostasis of SNCA/alpha-synuclein. Together with PICK1 proposed to ensure selectively GRIA2 exit from the endoplasmic reticulum to the Golgi and to regulate AMPAR compostion at the post-synapses and thus synaptic transmission (By similarity).[UniProtKB:Q8BHC1]^[3]

See Also

• Ras-related protein Rab 3D structures

References

1. ↑ Löchte T, Brüggemann N, Vollstedt EJ, Krause P, Domingo A, Rosales R, Lee LV, Hopfner F, Westenberger A, Kühn A, Klein C, Lohmann K. RAB39B mutations are a rare finding in Parkinson disease patients. Parkinsonism Relat Disord. 2016 Feb;23:116-7. PMID:26739247 doi:10.1016/j.parkreldis.2015.12.014
2. ↑ Hodges K, Brewer SS, Labbé C, Soto-Ortolaza AI, Walton RL, Strongosky AJ, Uitti RJ, van Gerpen JA, Ertekin-Taner N, Kantarci K, Lowe VJ, Parisi JE, Savica R, Graff-Radford J, Jones DT, Knopman DS, Petersen RC, Murray ME, Graff-Radford NR, Ferman TJ, Dickson DW, Wszolek ZK, Boeve BF, Ross OA, Lorenzo-Betancor O. RAB39B gene mutations are not a common cause of Parkinson's disease or dementia with Lewy bodies. Neurobiol Aging. 2016 Sep;45:107-108. PMID:27459931 doi:10.1016/j.neurobiolaging.2016.03.021
3. ↑ Sellier C, Campanari ML, Julie Corbier C, Gaucherot A, Kolb-Cheynel I, Oulad-Abdelghani M, Ruffenach F, Page A, Ciura S, Kabashi E, Charlet-Berguerand N. Loss of C9ORF72 impairs autophagy and synergizes with polyQ Ataxin-2 to induce motor neuron dysfunction and cell death. EMBO J. 2016 Jun 15;35(12):1276-97. doi: 10.15252/embj.201593350. Epub 2016 Apr, 21. PMID:27103069 doi:http://dx.doi.org/10.15252/embj.201593350