Reviewed, UniProtKB/Swiss-Prot P25087 (ERG6_YEAST)

Names and origin

Protein names

Recommended name:
    Sterol 24-C-methyltransferase
    EC=2.1.1.41
Alternative name(s):
    Delta(24)-sterol C-methyltransferase

Gene names

Name:	ERG6
Synonyms:	ISE1, LIS1, SED6
Ordered Locus Names:	YML008C
ORF Names:	YM9571.10C

Organism

Saccharomyces cerevisiae (Baker's yeast) [Complete proteome]

Taxonomic identifier

4932 [NCBI]

Taxonomic lineage

Eukaryota › Fungi › Dikarya › Ascomycota › Saccharomycotina › Saccharomycetes › Saccharomycetales › Saccharomycetaceae › Saccharomyces

Protein attributes

Sequence length	383 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Catalyzes the methyl transfer from S-adenosyl-methionine to the C-24 of zymosterol to form fecosterol.
Catalytic activity	S-adenosyl-L-methionine + 5-alpha-cholesta-8,24-dien-3-beta-ol = S-adenosyl-L-homocysteine + 24-methylene-5-alpha-cholest-8-en-3-beta-ol.
Pathway	Steroid metabolism; ergosterol biosynthesis; ergosterol from zymosterol: step 1/5.
Subunit structure	Interacts with ERG28. Ref.8 Ref.9
Miscellaneous	Present with 53800 molecules/cell in log phase SD medium. Ref.7
Sequence similarities	Belongs to the methyltransferase superfamily. ERG6 family.

Ontologies

Keywords
Biological process	Lipid synthesis Steroid biosynthesis Sterol biosynthesis
Ligand	S-adenosyl-L-methionine
Molecular function	Methyltransferase Transferase
PTM	Acetylation Phosphoprotein
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	sterol biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	lipid particle Inferred from direct assay. Source: SGD mitochondrial outer membrane Inferred from direct assay. Source: SGD
Molecular function	protein binding Inferred from physical interaction. Source: IntAct sterol 24-C-methyltransferase activity Inferred from direct assay. Source: SGD
Complete GO annotation...

Binary interactions

With	Entry	#Exp.	IntAct	Notes
	Q12066	1	EBI-6567,EBI-35877
	Q12274	1	EBI-6567,EBI-33978

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed
	Chain	2 – 383	382	Sterol 24-C-methyltransferase		PRO_0000124799
Amino acid modifications
	Modified residue	2	1	N-acetylserine Ref.5
	Modified residue	99	1	Phosphoserine Ref.10
	Modified residue	373	1	Phosphothreonine Ref.10
	Modified residue	375	1	Phosphoserine Ref.6
	Modified residue	378	1	Phosphoserine Ref.6
Experimental info
	Sequence conflict	380	1	E → EE in AAB31378. Ref.2

Sequences

	Sequence		Length	Mass (Da)
	P25087-1 [UniParc]. Last modified January 23, 2007. Version 4. Checksum: C3A2B6DF2C14ED63	FASTA	383	43,431
	10 20 30 40 50 60 MSETELRKRQ AQFTRELHGD DIGKKTGLSA LMSKNNSAQK EAVQKYLRNW DGRTDKDAEE 70 80 90 100 110 120 RRLEDYNEAT HSYYNVVTDF YEYGWGSSFH FSRFYKGESF AASIARHEHY LAYKAGIQRG 130 140 150 160 170 180 DLVLDVGCGV GGPAREIARF TGCNVIGLNN NDYQIAKAKY YAKKYNLSDQ MDFVKGDFMK 190 200 210 220 230 240 MDFEENTFDK VYAIEATCHA PKLEGVYSEI YKVLKPGGTF AVYEWVMTDK YDENNPEHRK 250 260 270 280 290 300 IAYEIELGDG IPKMFHVDVA RKALKNCGFE VLVSEDLADN DDEIPWYYPL TGEWKYVQNL 310 320 330 340 350 360 ANLATFFRTS YLGRQFTTAM VTVMEKLGLA PEGSKEVTAA LENAAVGLVA GGKSKLFTPM 370 380 MLFVARKPEN AETPSQTSQE ATQ

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"SED6 is identical to ERG6, and encodes a putative methyltransferase required for ergosterol synthesis." Hardwick K.G., Pelham H.R.B. Yeast 10:265-269(1994) [PubMed: 8203167] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]	"Mutations in LIS1 (ERG6) gene confer increased sodium and lithium uptake in Saccharomyces cerevisiae." Welihinda A.A., Beavis A.D., Trumbly R.J. Biochim. Biophys. Acta 1193:107-117(1994) [PubMed: 8038180] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[3]	"The nucleotide sequence of Saccharomyces cerevisiae chromosome XIII." Bowman S., Churcher C.M., Badcock K., Brown D., Chillingworth T., Connor R., Dedman K., Devlin K., Gentles S., Hamlin N., Hunt S., Jagels K., Lye G., Moule S., Odell C., Pearson D., Rajandream M.A., Rice P. , Skelton J., Walsh S.V., Whitehead S., Barrell B.G. Nature 387:90-93(1997) [PubMed: 9169872] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 204511 / S288c / AB972.
[4]	"Characterization of PDR4, a Saccharomyces cerevisiae gene that confers pleiotropic drug resistance in high-copy number: identity with YAP1, encoding a transcriptional activator." Hussain M., Lenard J. Gene 101:149-152(1991) [PubMed: 2060792] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-258.
[5]	"Proteome studies of Saccharomyces cerevisiae: identification and characterization of abundant proteins." Garrels J.I., McLaughlin C.S., Warner J.R., Futcher B., Latter G.I., Kobayashi R., Schwender B., Volpe T., Anderson D.S., Mesquita-Fuentes R., Payne W.E. Electrophoresis 18:1347-1360(1997) [PubMed: 9298649] [Abstract] Cited for: ACETYLATION AT SER-2.
[6]	"Phosphoproteome analysis by mass spectrometry and its application to Saccharomyces cerevisiae." Ficarro S.B., McCleland M.L., Stukenberg P.T., Burke D.J., Ross M.M., Shabanowitz J., Hunt D.F., White F.M. Nat. Biotechnol. 20:301-305(2002) [PubMed: 11875433] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-375 AND SER-378, MASS SPECTROMETRY.
[7]	"Global analysis of protein expression in yeast." Ghaemmaghami S., Huh W.-K., Bower K., Howson R.W., Belle A., Dephoure N., O'Shea E.K., Weissman J.S. Nature 425:737-741(2003) [PubMed: 14562106] [Abstract] Cited for: LEVEL OF PROTEIN EXPRESSION [LARGE SCALE ANALYSIS].
[8]	"The ERG28-encoded protein, Erg28p, interacts with both the sterol C-4 demethylation enzyme complex as well as the late biosynthetic protein, the C-24 sterol methyltransferase (Erg6p)." Mo C., Valachovic M., Bard M. Biochim. Biophys. Acta 1686:30-36(2004) [PubMed: 15522820] [Abstract] Cited for: INTERACTION WITH ERG28.
[9]	"Erg28p is a key protein in the yeast sterol biosynthetic enzyme complex." Mo C., Bard M. J. Lipid Res. 46:1991-1998(2005) [PubMed: 15995173] [Abstract] Cited for: INTERACTION WITH ERG28.
[10]	"A multidimensional chromatography technology for in-depth phosphoproteome analysis." Albuquerque C.P., Smolka M.B., Payne S.H., Bafna V., Eng J., Zhou H. Mol. Cell. Proteomics 7:1389-1396(2008) [PubMed: 18407956] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-99 AND THR-373, MASS SPECTROMETRY.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBLGenBankDDBJ	X74249 Genomic DNA. Translation: CAA52308.1. S72460 Genomic DNA. Translation: AAB31378.1. Z49810 Genomic DNA. Translation: CAA89944.1. X53830 Genomic DNA. Translation: CAA37826.1.
PIR	S42003.
RefSeq	NP_013706.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
DIP	DIP:3816N.
IntAct	P25087. 20 interactions.
2-D gel databases
SWISS-2DPAGE	P25087.
Proteomic databases
PeptideAtlas	P25087.
PRIDE	P25087.
Genome annotation databases
Ensembl	YML008C. Saccharomyces cerevisiae. [Contig view]
GeneID	855003.
GenomeReviews	Gene locus YML008C in contig Z71257_GR.
KEGG	sce:YML008C.
NMPDR	fig|4932.3.peg.4748.
Organism-specific databases
CYGD	YML008c.
SGD	S000004467. ERG6.
Yeast-GFP	Search...
Phylogenomic databases
HOGENOM	P25087.
OMA	P25087. FVKGDFM.
Enzyme and pathway databases
BRENDA	2.1.1.41. 250.
Gene expression databases
GermOnline	YML008C. Saccharomyces cerevisiae.
Family and domain databases
InterPro	IPR013216. Methyltransf_11. IPR013705. Sterol_MeTrfase_C. [Graphical view]
Pfam	PF08241. Methyltransf_11. 1 hit. PF08498. Sterol_MT_C. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
NextBio	978157.

Entry information

Entry name

ERG6_YEAST

Accession

Primary (citable) accession number: P25087

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 1, 1992
Last sequence update:	January 23, 2007
Last modified:	June 16, 2009
This is version 88 of the entry and version 4 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

FPAP (Fungal Proteome Annotation Project)