lys4 (SPBC1105.02c)

Gene Standard Namelys4 Characterisation Statuspublished
Systematic IDSPBC1105.02c Feature Typeprotein coding
Synonyms Name Description
Producthomocitrate synthase Product Size418aa, 46.29 kDa
Genomic Location Chromosome II, 3507472-3505708 (1765nt); CDS:3507307-3506051 (1257nt)

Ensembl Gene Location
GO Molecular Function
Term NameCount
homocitrate synthase activity1
Annotation ExtensionEvidenceWith/FromReference
GO Biological Process
Term NameCount
generation of precursor metabolites and energy113
Annotation ExtensionEvidenceWith/FromReference
lysine biosynthetic process10
Annotation ExtensionEvidenceWith/FromReference
lysine biosynthetic process via aminoadipic acid8
Annotation ExtensionEvidenceWith/FromReference
GO Cellular Component
Term NameCount
Annotation ExtensionEvidenceWith/FromReference
Annotation ExtensionEvidenceWith/FromReference
Annotation ExtensionEvidenceWith/FromReference
Fission Yeast Phenotype Ontology
Gene Deletion Viability: Viable

Population Phenotype

Term NameAlleleExpressionCount
growth auxotrophic for lysinelys4 unnamed mutantNot specified7
viable vegetative cell populationlys4ΔNull3781

Cell Phenotype

Term NameAlleleExpressionCount
viable vegetative cell with normal cell morphology3092
penetrance FYPO_EXT:0000001lys4ΔNull
Target Of
FYPO affected by mutation in sod1 superoxide dismutase Sod1 PMID:16299000
GO regulated by phx1 stationary phase-specific homeobox transcription factor Phx1 PMID:16299000
Ensembl transcript structure with UTRs, exons and introns


Exon Start End


Region Coordinates Reference
Protein Features

Graphical View

Ensembl protein image with mapped locations of structural domains

Protein Families and Domains

Feature ID Database InterPro Description Start End Count
PF00682 Pfam IPR000891 Pyruvate carboxyltransferase 43 273 3
PS00815 Prosite Patterns IPR002034 Alpha-isopropylmalate/homocitrate synthase, conserved site 42 58 2
PS00816 Prosite Patterns IPR002034 Alpha-isopropylmalate/homocitrate synthase, conserved site 221 234 2
PS50991 Prosite Profiles IPR000891 Pyruvate carboxyltransferase 35 288 3
PTHR10277 HMMPANTHER 10 412 2
PTHR10277:SF27 HMMPANTHER 10 412 1 Gene3D IPR013785 Aldolase-type TIM barrel 34 367 35
SSF51569 SuperFamily 33 310 9
TIGR02146 tigrfam IPR011872 Homocitrate synthase, fungi/archaea 37 383 1

View domain organization at Pfam

Protein Properties

Ave. residue weight 110.75 Da
Charge -4.00
Isoelectric point 5.95
Molecular weight 46.29 kDa
Number of residues 418

Protein Modifications

Term NameResidueCount
O-phospho-L-serine 1670
present during mitotic M phaseS360
Annotation ExtensionEvidenceResidueReference
present during mitotic M phase experimental evidence S360 PMID:21712547
O-phospho-L-threonine 693
present during cellular response to thiabendazoleT202
Annotation ExtensionEvidenceResidueReference
present during cellular response to thiabendazole IDA T202 PMID:18257517
phosphorylated residue 1922
Annotation ExtensionEvidenceResidueReference
NAS PMID:18257517
IDA PMID:19547744
Gene Expression

Qualitative Gene Expression

protein leveldecreased in presence of paraquat dichloride Western blot evidencePMID:16299000
present during GO:0072690Western blot evidencePMID:16299000
RNA levelpresent during GO:0072690Northern assay evidencePMID:16299000
unchanged in presence of paraquat dichloride Northern assay evidencePMID:16299000

Quantitative Gene Expression

Protein Level

Molecules/Cell (average)ExtensionConditionScaleEvidenceReference
188843during GO:0000080PECO:0000126,
single cellmass spectrometry evidencePMID:24763107
177812during GO:0000084PECO:0000126,
single cellmass spectrometry evidencePMID:24763107
177742during GO:0000085PECO:0000126,
single cellmass spectrometry evidencePMID:24763107
167151during GO:0000087PECO:0000126,
single cellmass spectrometry evidencePMID:24763107
85763.45during GO:0072690PECO:0000005,
population wideexperimental evidencePMID:23101633
174121during GO:0072690PECO:0000126,
single cellmass spectrometry evidencePMID:24763107
26853.36during cell quiescence following G1 arrest due to nitrogen limitationPECO:0000005,
population wideexperimental evidencePMID:23101633

RNA Level

Molecules/Cell (average)ExtensionConditionScaleEvidenceReference
25during GO:0072690PECO:0000005,
population wideexperimental evidencePMID:23101633
3.9during cell quiescence following G1 arrest due to nitrogen limitationPECO:0000005,
population wideexperimental evidencePMID:23101633
Species Distribution
predominantly single copy (one to one)3092
conserved in fungi4604
conserved in eukaryotes4516
conserved in bacteria1000

Manually curated orthologous groups


Orthologs in Compara

Physical Interactions

Source: BioGRID

View all interactions in esyN
View the HCPIN interactions in esyN

Gene Product Evidence Reference
slm9hira protein Slm9 Affinity Capture-MSPMID:20976105
hhp1serine/threonine protein kinase Hhp1 Affinity Capture-MSPMID:24055157
hhp2serine/threonine protein kinase Hhp2 Affinity Capture-MSPMID:24055157
lys4homocitrate synthase Co-crystal or NMR structurePMID:20089861
tea1cell end marker Tea1 Affinity Capture-MSPMID:21652630
Genetic Interactions

Source: BioGRID

View these interactions in esyN

Gene Product Evidence Reference
swd2Set1C complex subunit Swd2.1 Negative GeneticPMID:22681890
shg1Set1C complex subunit Shg1 Positive GeneticPMID:22681890
pab2poly(A) binding protein Pab2 Negative GeneticPMID:22681890
pyp1tyrosine phosphatase Pyp1 Negative GeneticPMID:22681890
saf4splicing associated factor Saf4 Negative GeneticPMID:22681890
sap14U2 snRNP-associated protein SF3B14 Sap14 Negative GeneticPMID:22681890
pof9F-box protein Pof9 Negative GeneticPMID:22681890
apc10anaphase-promoting complex subunit Apc10 Negative GeneticPMID:22681890
SPBC11B10.08WW domain containing conserved fungal protein Negative GeneticPMID:22681890
vph2endoplasmic reticulum membrane protein involved in assembly of the V-ATPase (predicted) Negative GeneticPMID:22681890
ubp4ubiquitin C-terminal hydrolase Ubp4 Negative GeneticPMID:22681890
far10SIP/FAR complex FHA domain subunit Far10/Csc1 Negative GeneticPMID:22681890
cdk11serine/threonine protein kinase cdk11 Negative GeneticPMID:22681890
pst2Clr6 histone deacetylase complex subunit Pst2 Negative GeneticPMID:22681890
pfd1prefoldin subunit 1 (predicted) Negative GeneticPMID:22681890
cph1Clr6 histone deacetylase associated PHD protein-1 Cph1 Negative GeneticPMID:22681890
mlo3RNA binding protein Mlo3 Negative GeneticPMID:22681890
SPAC1687.14cEF hand family protein, unknown role Negative GeneticPMID:22681890
SPAC24B11.08cCOPII-coated vesicle component Erv46 (predicted) Positive GeneticPMID:22681890
ptc1protein phosphatase 2C Ptc1 Negative GeneticPMID:22681890
uch1ubiquitin C-terminal hydrolase Uch1 Negative GeneticPMID:22681890
rpl160160S ribosomal protein L13/L16 (predicted) Positive GeneticPMID:22681890
cph2Clr6 histone deacetylase associated PHD protein-2 Cph2 Negative GeneticPMID:22681890
mak3histidine kinase Mak3 Negative GeneticPMID:22681890
pub3HECT-type ubiquitin-protein ligase E3 Pub3 (predicted) Negative GeneticPMID:22681890
SPAC1952.06cspliceosomal complex subunit (predicted) Negative GeneticPMID:22681890
hrp3ATP-dependent DNA helicase Hrp3 Negative GeneticPMID:22681890
trt1telomerase reverse transcriptase 1 protein Trt1 Negative GeneticPMID:22681890
cdc37Hsp90 co-chaperone Cdc37 Negative GeneticPMID:22681890
res1MBF transcription factor complex subunit Res1 Negative GeneticPMID:22681890
sre1sterol regulatory element binding protein, transcription factor Sre1 Negative GeneticPMID:21504829
Negative GeneticPMID:22681890
mcs2TFIIH complex cyclin Mcs2 Negative GeneticPMID:22681890
ebs1EST1 family nonsense-mediated mRNA decay (NMD) pathway protein Ebs1 (predicted) Negative GeneticPMID:22681890
dsc4Golgi Dsc E3 ligase complex subunit Dsc3 Negative GeneticPMID:21504829
Negative GeneticPMID:22681890
prw1Clr6 histone deacetylase complex subunit Prw1 Negative GeneticPMID:22681890
toe4transcription factor, zf-fungal binuclear cluster type(predicted) Negative GeneticPMID:22681890
vps5retromer complex subunit Vps5 Negative GeneticPMID:22681890
mkh1MEK kinase (MEKK) Mkh1 Negative GeneticPMID:22681890
SPBC18H10.05WD repeat protein, human WDR44 family Negative GeneticPMID:22681890
SPAC19B12.11czinc finger protein, human ZNF593 ortholog Positive GeneticPMID:22681890
ppk32serine/threonine protein kinase Ppk32 (predicted) Negative GeneticPMID:22681890
External References
Database Identifier Description
NBRP SPBC1105.02c Fission yeast strain database, National BioResource Project (Japan)
YOGY SPBC1105.02c Retrieval of eukaryotic orthologs (Bähler Lab)
BioGrid SPBC1105.02c BioGRID Interaction Datasets
Expression Viewer SPBC1105.02c Cell Cycle Expression Profile (Bähler Lab)
Expression Viewer SPBC1105.02c Meiosis/Sporulation Expression Profies (Bähler Lab)
Expression Viewer SPBC1105.02c Pheromone response/mating expression profiles (Bähler Lab)
Expression Viewer SPBC1105.02c Environmental stress expression profiles (Bähler Lab)
Pomb(A) SPBC1105.02c Polyadenylation Viewer (Gullerova lab)
pombeTV SPBC1105.02c Transcriptome Viewer (Bähler Lab)
Cyclebase SPBC1105.02c Cell Cycle Data
GEO SPBC1105.02c GEO profiles
PInt SPBC1105.02c Protein-Protein Interaction Predictor (Bähler Lab)
PeptideAtlas SPBC1105.02c Peptides identified in tandem mass spectrometry proteomics experiments
SYSGRO SPBC1105.02c Fission yeast phenotypic data & analysis
IntEnz2.3.3.14Integrated relational Enzyme database
Rhea2.3.3.14Annotated reactions database
SPD / RIKEN20/20A12Orfeome Localization Data
UniProtKB/SwissProtQ9Y823Homocitrate synthase, mitochondrial
ModBaseQ9Y823Database of comparative protein structure models
STRINGQ9Y823Network display of known and predicted interactions and functional associations
RefSeq PeptideNP_596458homocitrate synthase (predicted)
RefSeq mRNANM_001022377972h- homocitrate synthase (predicted) (lys4), mRNA
ePDB3IVSThe European PDB
ePDB3IVTThe European PDB
ePDB3IVUThe European PDB
ePDB3MI3The European PDB
European Nucleotide ArchiveCAB50965.1ENA Protein Mapping
MetaCycPWY-3081Lysine biosynthesis V
MetaCycPWY-68713-methylbutanol biosynthesis
KEGG_Enzyme00290+, leucine and isoleucine biosynthesis
KEGG_Enzyme00300+ biosynthesis
KEGG_Enzyme00620+ metabolism
KEGG_Enzyme00620+ metabolism
UniParcUPI000006C25CUniProt Archive

Literature for lys4

Search: Europe PMC or PubMed

Release Version: PomBase:25_48 - 10 Jan 2015