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Protein

Ubiquitin carboxyl-terminal hydrolase isozyme L1

Gene

UCHL1

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Ubiquitin-protein hydrolase involved both in the processing of ubiquitin precursors and of ubiquitinated proteins. This enzyme is a thiol protease that recognizes and hydrolyzes a peptide bond at the C-terminal glycine of ubiquitin. Also binds to free monoubiquitin and may prevent its degradation in lysosomes. The homodimer may have ATP-independent ubiquitin ligase activity.2 Publications

Catalytic activityi

Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).1 Publication

Kineticsi

  1. KM=122 nM for Ub-AMC3 Publications
  2. KM=1.20 µM for ubiquitin ethyl ester3 Publications
  1. Vmax=0.47 µmol/min/mg enzyme toward Ub-AMC3 Publications
  2. Vmax=25 µmol/min/mg enzyme toward ubiquitin ethyl ester3 Publications

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei1 – 11Susceptible to oxidation1 Publication
Sitei6 – 61Susceptible to oxidation1 Publication
Sitei12 – 121Susceptible to oxidation1 Publication
Active sitei90 – 901Nucleophile1 Publication
Sitei124 – 1241Susceptible to oxidation1 Publication
Active sitei161 – 1611Proton donor1 Publication
Sitei176 – 1761Important for enzyme activity1 Publication
Sitei179 – 1791Susceptible to oxidation1 Publication
Sitei220 – 2201Susceptible to oxidation1 Publication

GO - Molecular functioni

  • alpha-2A adrenergic receptor binding Source: BHF-UCL
  • cysteine-type endopeptidase activity Source: UniProtKB
  • ligase activity Source: UniProtKB-KW
  • omega peptidase activity Source: UniProtKB
  • thiol-dependent ubiquitin-specific protease activity Source: GO_Central
  • ubiquitin binding Source: UniProtKB
  • ubiquitin protein ligase binding Source: ParkinsonsUK-UCL

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Ligase, Protease, Thiol protease

Keywords - Biological processi

Ubl conjugation pathway

Enzyme and pathway databases

BRENDAi3.4.19.12. 2681.
SABIO-RKP09936.

Protein family/group databases

MEROPSiC12.001.

Names & Taxonomyi

Protein namesi
Recommended name:
Ubiquitin carboxyl-terminal hydrolase isozyme L1 (EC:3.4.19.12, EC:6.-.-.-)
Short name:
UCH-L1
Alternative name(s):
Neuron cytoplasmic protein 9.5
PGP 9.5
Short name:
PGP9.5
Ubiquitin thioesterase L1
Gene namesi
Name:UCHL1
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 4

Organism-specific databases

HGNCiHGNC:12513. UCHL1.

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Endoplasmic reticulum, Membrane

Pathology & Biotechi

Involvement in diseasei

Parkinson disease 5 (PARK5)1 Publication
The disease is caused by mutations affecting the gene represented in this entry.
Disease descriptionA complex neurodegenerative disorder with manifestations ranging from typical Parkinson disease to dementia with Lewy bodies. Clinical features include parkinsonian symptoms (resting tremor, rigidity, postural instability and bradykinesia), dementia, diffuse Lewy body pathology, autonomic dysfunction, hallucinations and paranoia.
See also OMIM:613643
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti93 – 931I → M in PARK5; impaired enzymatic hydrolase activity; has about a 50% reduction in catalytic activity compared to wild-type protein. 4 Publications
Corresponds to variant rs121917767 [ dbSNP | Ensembl ].
VAR_015678
Neurodegeneration with optic atrophy, childhood-onset (NDGOA)1 Publication
The disease is caused by mutations affecting the gene represented in this entry.
Disease descriptionA progressive neurodegenerative syndrome characterized by childhood onset blindness, cerebellar ataxia, nystagmus, dorsal column dysfuction, and spasticity with upper motor neuron dysfunction.
See also OMIM:615491
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti7 – 71E → A in NDGOA; has decreased binding to ubiquitin and significantly decreased hydrolase activity compared to wild-type. 1 Publication
Corresponds to variant rs397515634 [ dbSNP | Ensembl ].
VAR_070875

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi73 – 731Q → R: No effect on enzymatic parameters. 1 Publication
Mutagenesisi90 – 901C → S: Abolishes enzymatic activity. 3 Publications
Mutagenesisi97 – 971H → Q or N: 2-fold increase in affinity for ubiquitin ethyl ester, slight reduction in enzymatic activity. 1 Publication
Mutagenesisi161 – 1611H → D: 10000-fold decrease in enzymatic activity; no change in affinity for ubiquitin ethyl ester. 1 Publication
Mutagenesisi161 – 1611H → K, Q, N or Y: Abolishes enzymatic activity. 1 Publication
Mutagenesisi176 – 1761D → N: 6-fold decrease in affinity for ubiquitin ethyl ester; 97.5% decrease in enzymatic activity. 1 Publication
Mutagenesisi204 – 2041F → A: Almost complete loss of activity. 1 Publication

Keywords - Diseasei

Disease mutation, Neurodegeneration, Parkinson disease, Parkinsonism

Organism-specific databases

MalaCardsiUCHL1.
MIMi613643. phenotype.
615491. phenotype.
Orphaneti352654. Early-onset progressive neurodegeneration - blindness - ataxia - spasticity.
2828. Young adult-onset Parkinsonism.
PharmGKBiPA37160.

Chemistry

ChEMBLiCHEMBL6159.
GuidetoPHARMACOLOGYi2426.

Polymorphism and mutation databases

BioMutaiUCHL1.
DMDMi136681.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 220220Ubiquitin carboxyl-terminal hydrolase isozyme L1PRO_0000211055Add
BLAST
Propeptidei221 – 2233Removed in mature formCuratedPRO_0000414311

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei125 – 1251PhosphoserineBy similarity
Lipidationi220 – 2201S-farnesyl cysteine1 Publication

Post-translational modificationi

O-glycosylated.By similarity

Keywords - PTMi

Glycoprotein, Lipoprotein, Oxidation, Phosphoprotein, Prenylation

Proteomic databases

EPDiP09936.
PaxDbiP09936.
PeptideAtlasiP09936.
PRIDEiP09936.
TopDownProteomicsiP09936.

2D gel databases

DOSAC-COBS-2DPAGEP09936.
UCD-2DPAGEP09936.

PTM databases

iPTMnetiP09936.
PhosphoSiteiP09936.
SwissPalmiP09936.

Expressioni

Tissue specificityi

Found in neuronal cell bodies and processes throughout the neocortex (at protein level). Expressed in neurons and cells of the diffuse neuroendocrine system and their tumors. Weakly expressed in ovary. Down-regulated in brains from Parkinson disease and Alzheimer disease patients.2 Publications

Gene expression databases

BgeeiENSG00000154277.
CleanExiHS_UCHL1.
ExpressionAtlasiP09936. baseline and differential.
GenevisibleiP09936. HS.

Organism-specific databases

HPAiCAB002580.
HPA005993.

Interactioni

Subunit structurei

Monomer. Homodimer. Interacts with SNCA (By similarity). Interacts with COPS5.By similarity3 Publications

Binary interactionsi

WithEntry#Exp.IntActNotes
COPS5Q929053EBI-714860,EBI-594661
EGFRP005332EBI-714860,EBI-297353
TERF2IPQ9NYB02EBI-714860,EBI-750109

GO - Molecular functioni

  • alpha-2A adrenergic receptor binding Source: BHF-UCL
  • ubiquitin binding Source: UniProtKB
  • ubiquitin protein ligase binding Source: ParkinsonsUK-UCL

Protein-protein interaction databases

BioGridi113192. 53 interactions.
DIPiDIP-36620N.
IntActiP09936. 22 interactions.
MINTiMINT-1378022.
STRINGi9606.ENSP00000284440.

Chemistry

BindingDBiP09936.

Structurei

Secondary structure

1
223
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi10 – 1910Combined sources
Beta strandi22 – 309Combined sources
Helixi36 – 383Combined sources
Beta strandi39 – 424Combined sources
Beta strandi46 – 549Combined sources
Helixi57 – 7014Combined sources
Turni71 – 744Combined sources
Beta strandi86 – 883Combined sources
Helixi90 – 10011Combined sources
Turni101 – 1055Combined sources
Helixi113 – 1208Combined sources
Turni121 – 1233Combined sources
Helixi126 – 1349Combined sources
Helixi137 – 14711Combined sources
Beta strandi160 – 1689Combined sources
Beta strandi171 – 1755Combined sources
Beta strandi179 – 1813Combined sources
Beta strandi183 – 1875Combined sources
Helixi190 – 1923Combined sources
Helixi193 – 20715Combined sources
Helixi211 – 2133Combined sources
Beta strandi215 – 2217Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2ETLX-ray2.40A/B1-223[»]
2LENNMR-A1-223[»]
3IFWX-ray2.40A1-223[»]
3IRTX-ray2.80A/B1-223[»]
3KVFX-ray2.80A1-223[»]
3KW5X-ray2.83A1-223[»]
4DM9X-ray2.35A/B1-223[»]
4JKJX-ray2.15A/B1-223[»]
ProteinModelPortaliP09936.
SMRiP09936. Positions 1-223.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP09936.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni5 – 106Interaction with ubiquitin1 Publication
Regioni211 – 2166Interaction with ubiquitin1 Publication

Sequence similaritiesi

Belongs to the peptidase C12 family.Curated

Phylogenomic databases

eggNOGiKOG1415. Eukaryota.
ENOG4111HNA. LUCA.
GeneTreeiENSGT00510000046640.
HOGENOMiHOG000182400.
HOVERGENiHBG075483.
InParanoidiP09936.
KOiK05611.
PhylomeDBiP09936.
TreeFamiTF316166.

Family and domain databases

Gene3Di3.40.532.10. 1 hit.
InterProiIPR001578. Peptidase_C12_UCH.
IPR030297. UCHL1.
[Graphical view]
PANTHERiPTHR10589. PTHR10589. 1 hit.
PTHR10589:SF19. PTHR10589:SF19. 1 hit.
PfamiPF01088. Peptidase_C12. 1 hit.
[Graphical view]
PRINTSiPR00707. UBCTHYDRLASE.
PROSITEiPS00140. UCH_1. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P09936-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQLKPMEINP EMLNKVLSRL GVAGQWRFVD VLGLEEESLG SVPAPACALL
60 70 80 90 100
LLFPLTAQHE NFRKKQIEEL KGQEVSPKVY FMKQTIGNSC GTIGLIHAVA
110 120 130 140 150
NNQDKLGFED GSVLKQFLSE TEKMSPEDRA KCFEKNEAIQ AAHDAVAQEG
160 170 180 190 200
QCRVDDKVNF HFILFNNVDG HLYELDGRMP FPVNHGASSE DTLLKDAAKV
210 220
CREFTEREQG EVRFSAVALC KAA
Length:223
Mass (Da):24,824
Last modified:November 1, 1990 - v2
Checksum:iC9E972AC4DA5DA8A
GO

Sequence cautioni

The sequence CAA28443 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended.Curated

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti7 – 71E → A in NDGOA; has decreased binding to ubiquitin and significantly decreased hydrolase activity compared to wild-type. 1 Publication
Corresponds to variant rs397515634 [ dbSNP | Ensembl ].
VAR_070875
Natural varianti18 – 181S → Y Polymorphism; may be associated with reduced risk for sporadic Parkinson disease; it confers protection from oxidative stress when expressed at physiological levels in neuroblastoma cells and primary cortical neurons; loss of dimerization ability; impaired ligase activity. 8 Publications
Corresponds to variant rs5030732 [ dbSNP | Ensembl ].
VAR_015677
Natural varianti93 – 931I → M in PARK5; impaired enzymatic hydrolase activity; has about a 50% reduction in catalytic activity compared to wild-type protein. 4 Publications
Corresponds to variant rs121917767 [ dbSNP | Ensembl ].
VAR_015678

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC095043 Genomic DNA. Translation: AAY40923.1.
CH471069 Genomic DNA. Translation: EAW92983.1.
BC000332 mRNA. Translation: AAH00332.1.
BC005117 mRNA. Translation: AAH05117.1.
BC006305 mRNA. Translation: AAH06305.1.
X17377 Genomic DNA. Translation: CAA35249.1.
X04741 mRNA. Translation: CAA28443.1. Different initiation.
AH007277 Genomic DNA. Translation: AAD09172.1.
CCDSiCCDS3462.1.
PIRiA25856.
RefSeqiNP_004172.2. NM_004181.4.
UniGeneiHs.518731.

Genome annotation databases

EnsembliENST00000284440; ENSP00000284440; ENSG00000154277.
ENST00000503431; ENSP00000422542; ENSG00000154277.
GeneIDi7345.
KEGGihsa:7345.

Keywords - Coding sequence diversityi

Polymorphism

Cross-referencesi

Web resourcesi

Wikipedia

Ubiquitin carboxy-terminal hydrolase L1 entry

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AC095043 Genomic DNA. Translation: AAY40923.1.
CH471069 Genomic DNA. Translation: EAW92983.1.
BC000332 mRNA. Translation: AAH00332.1.
BC005117 mRNA. Translation: AAH05117.1.
BC006305 mRNA. Translation: AAH06305.1.
X17377 Genomic DNA. Translation: CAA35249.1.
X04741 mRNA. Translation: CAA28443.1. Different initiation.
AH007277 Genomic DNA. Translation: AAD09172.1.
CCDSiCCDS3462.1.
PIRiA25856.
RefSeqiNP_004172.2. NM_004181.4.
UniGeneiHs.518731.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2ETLX-ray2.40A/B1-223[»]
2LENNMR-A1-223[»]
3IFWX-ray2.40A1-223[»]
3IRTX-ray2.80A/B1-223[»]
3KVFX-ray2.80A1-223[»]
3KW5X-ray2.83A1-223[»]
4DM9X-ray2.35A/B1-223[»]
4JKJX-ray2.15A/B1-223[»]
ProteinModelPortaliP09936.
SMRiP09936. Positions 1-223.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi113192. 53 interactions.
DIPiDIP-36620N.
IntActiP09936. 22 interactions.
MINTiMINT-1378022.
STRINGi9606.ENSP00000284440.

Chemistry

BindingDBiP09936.
ChEMBLiCHEMBL6159.
GuidetoPHARMACOLOGYi2426.

Protein family/group databases

MEROPSiC12.001.

PTM databases

iPTMnetiP09936.
PhosphoSiteiP09936.
SwissPalmiP09936.

Polymorphism and mutation databases

BioMutaiUCHL1.
DMDMi136681.

2D gel databases

DOSAC-COBS-2DPAGEP09936.
UCD-2DPAGEP09936.

Proteomic databases

EPDiP09936.
PaxDbiP09936.
PeptideAtlasiP09936.
PRIDEiP09936.
TopDownProteomicsiP09936.

Protocols and materials databases

DNASUi7345.
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000284440; ENSP00000284440; ENSG00000154277.
ENST00000503431; ENSP00000422542; ENSG00000154277.
GeneIDi7345.
KEGGihsa:7345.

Organism-specific databases

CTDi7345.
GeneCardsiUCHL1.
GeneReviewsiUCHL1.
HGNCiHGNC:12513. UCHL1.
HPAiCAB002580.
HPA005993.
MalaCardsiUCHL1.
MIMi191342. gene.
613643. phenotype.
615491. phenotype.
neXtProtiNX_P09936.
Orphaneti352654. Early-onset progressive neurodegeneration - blindness - ataxia - spasticity.
2828. Young adult-onset Parkinsonism.
PharmGKBiPA37160.
GenAtlasiSearch...

Phylogenomic databases

eggNOGiKOG1415. Eukaryota.
ENOG4111HNA. LUCA.
GeneTreeiENSGT00510000046640.
HOGENOMiHOG000182400.
HOVERGENiHBG075483.
InParanoidiP09936.
KOiK05611.
PhylomeDBiP09936.
TreeFamiTF316166.

Enzyme and pathway databases

BRENDAi3.4.19.12. 2681.
SABIO-RKP09936.

Miscellaneous databases

ChiTaRSiUCHL1. human.
EvolutionaryTraceiP09936.
GeneWikiiUbiquitin_carboxy-terminal_hydrolase_L1.
GenomeRNAii7345.
PROiP09936.
SOURCEiSearch...

Gene expression databases

BgeeiENSG00000154277.
CleanExiHS_UCHL1.
ExpressionAtlasiP09936. baseline and differential.
GenevisibleiP09936. HS.

Family and domain databases

Gene3Di3.40.532.10. 1 hit.
InterProiIPR001578. Peptidase_C12_UCH.
IPR030297. UCHL1.
[Graphical view]
PANTHERiPTHR10589. PTHR10589. 1 hit.
PTHR10589:SF19. PTHR10589:SF19. 1 hit.
PfamiPF01088. Peptidase_C12. 1 hit.
[Graphical view]
PRINTSiPR00707. UBCTHYDRLASE.
PROSITEiPS00140. UCH_1. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiUCHL1_HUMAN
AccessioniPrimary (citable) accession number: P09936
Secondary accession number(s): Q4W5K6, Q71UM0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 1, 1989
Last sequence update: November 1, 1990
Last modified: September 7, 2016
This is version 189 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Miscellaneous

Oxidation of Met-1, Met-6, Met-12, Met-124 and Met-179 to methionine sulfoxide, and oxidation of Cys-220 to cysteine sulfonic acid have been observed in brains from Alzheimer disease (AD) and Parkinson disease (PD) patients. In AD, UCHL1 was found to be associated with neurofibrillary tangles. In contrast to UCHL3, does not hydrolyze a peptide bond at the C-terminal glycine of NEDD8.

Caution

PubMed:9774100 reports the association of mutation Ile93Met with Parkinson disease. However, according to PubMed:16450370 this association is uncertain and UCHL1 is not a susceptibility gene for Parkinson disease.Curated
The oxidation forms of Met-1, Met-6, Met-12, Met-124, Met-179 and Cys-220 are subject of controversy and could be the artifactual results of sample handling.1 Publication

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome 4
    Human chromosome 4: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  6. Peptidase families
    Classification of peptidase families and list of entries
  7. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.