Gene symbol and protein  | Gene Location  | All allelic disease phenotypes - locus/disease symbols  | 
UBA1Ubiquitin-activating enzyme 1         | Xp11.23  |  * Spinal muscular atrophy, distal, Xlinked, related to UBA1 - SMAX2 (12.50) * Spinal muscular atrophy, distal, X-linked, 2 -  (12.50)
 
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UBA5Ubiquitin-Like Modifier Activating Enzyme 5         | 3q22.1  |  * Spinocerebellar ataxia, autosomal recessive 24 - SACR24 (13.84)
 
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UBAP1Ubiquitin-associated protein 1         | 9p13.3  |  * Spastic paraplegia 80, autosomal dominant - SPG80 (15.22)
 
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 | Xp11.21  | * Amyotrophic lateral sclerosis 15, with or without frontotemporal dementia - ALS15 (12.68)
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UCHL1Ubiquitin Carboxyl-Terminal Esterase L1         | 4p13  |  * Spastic paraplegia 79, autosomal recessive - SPG79 (15.69)
  * Spastic paraplegia 79, autosomal dominant - SPG79A (15.69, 15.69)
 
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UNC13AUnc-13 homolog A (C. elegans)         | 19p13.11  | * Presynaptic congenital myasthenic sydrome related to MUNC13-1 -  (11.39)
   | 
UNC45BUNC45 Myosin Chaperone B         | 17q12  |  * Myofibrillar myopathy 11 - MFM11 (5.12)
 
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