Reviewed, UniProtKB/Swiss-Prot O00422 (SAP18_HUMAN)

Names and origin

Protein names

Recommended name:
    Histone deacetylase complex subunit SAP18
Alternative name(s):
    Sin3-associated polypeptide, 18 kDa
    Sin3-associated polypeptide p18
    Cell growth-inhibiting protein 38
    2HOR0202

Gene names

Name:	SAP18
ORF Names:	GIG38

Organism

Homo sapiens (Human) [Complete proteome]

Taxonomic identifier

9606 [NCBI]

Taxonomic lineage

Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo

Protein attributes

Sequence length	153 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	Component of the SIN3-repressing complex. Enhances the ability of SIN3-HDAC1-mediated transcriptional repression. When tethered to the promoter, it can direct the formation of a repressive complex to core histone proteins. Component of a splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of a few core proteins and several more peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Ref.1
Subunit structure	Found in a mRNA splicing-dependent exon junction complex (EJC), at least composed of ACIN1, CASC3, EIF4A3, MAGOH, PNN, RBM8A, RNPS1, SAP18 and THOC4. Found in a heterotrimeric complex with ACIN1, RNPS1 and SAP18. Forms a complex with SIN3A and HDAC1.
Subcellular location	Nucleus. Cytoplasm. Note: Shuttles between the nucleus and the cytoplasm. Ref.11
Tissue specificity	Ubiquitous.
Sequence similarities	Belongs to the SAP18 family.

Ontologies

Keywords
Biological process	Transcription Transcription regulation
Cellular component	Cytoplasm Nucleus
Molecular function	Repressor
PTM	Acetylation
Technical term	3D-structure Complete proteome
Gene Ontology (GO)
Biological process	regulation of transcription from RNA polymerase II promoter Ref.1 Traceable author statement. Source: ProtInc transcription Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell histone deacetylase complex Ref.1 Traceable author statement. Source: ProtInc
Molecular function	transcription corepressor activity Ref.1 Traceable author statement. Source: ProtInc
Complete GO annotation...

Binary interactions

With	Entry	#Exp.	IntAct	Notes
ATP5L	O75964	1	EBI-1044156,EBI-1044001
C6orf211	Q9H993	1	EBI-1044156,EBI-1046033
DDOST	P39656	1	EBI-1044156,EBI-358866
EIF3E	P60228	1	EBI-1044156,EBI-347740
HDAC1	Q13547	2	EBI-1044156,EBI-301834
KIAA1279	Q96EK5	1	EBI-1044156,EBI-744150
NSF	P46459	1	EBI-1044156,EBI-712251
RGS10	O43665	1	EBI-1044156,EBI-1057034
RPN2	P04844	1	EBI-1044156,EBI-719731
SEPT6	Q5JTK3	1	EBI-1044156,EBI-1047521
YARS	P54577	1	EBI-1044156,EBI-1048893

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Feature identifier

Molecule processing

Initiator methionine

1

1

Removed

Chain

2 – 153

152

Histone deacetylase complex subunit SAP18

PRO_0000220975

Amino acid modifications

Modified residue

2

1

N-acetylalanine Ref.12

Experimental info

Sequence conflict

114

1

K → E in AAF21220. Ref.2

Sequence conflict

146

1

P → T in AAH30836. Ref.9

Secondary structure

1

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153

Helix Strand Turn

Details...

Turn

22 – 24

3

Beta strand

28 – 37

10

Helix

43 – 45

3

Turn

52 – 54

3

Beta strand

55 – 60

6

Helix

66 – 76

11

Helix

78 – 81

4

Beta strand

86 – 91

6

Beta strand

95 – 98

4

Beta strand

104 – 112

9

Helix

122 – 125

4

Beta strand

132 – 138

7

Beta strand

144 – 147

4

Sequences

	Sequence		Length	Mass (Da)
	O00422-1 [UniParc]. Last modified July 1, 1997. Version 1. Checksum: C7E479FFE9CA5774	FASTA	153	17,561
	10 20 30 40 50 60 MAVESRVTQE EIKKEPEKPI DREKTCPLLL RVFTTNNGRH HRMDEFSRGN VPSSELQIYT 70 80 90 100 110 120 WMDATLKELT SLVKEVYPEA RKKGTHFNFA IVFTDVKRPG YRVKEIGSTM SGRKGTDDSM 130 140 150 TLQSQKFQIG DYLDIAITPP NRAPPPSGRM RPY

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Histone deacetylases and SAP18, a novel polypeptide, are components of a human Sin3 complex." Zhang Y., Iratni R., Erdjument-Bromage H., Tempst P., Reinberg D. Cell 89:357-364(1997) [PubMed: 9150135] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, INTERACTION WITH SIN3A AND HDAC1.
[2]	"Characterization of proteins interacting with CAMPGEF." Kawasaki H., Housman D.E., Graybiel A.M. Submitted (NOV-1996) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[3]	"A catalogue of genes in the human dermal papilla cells as identified by expressed sequence tags." Kim M.K., Kim Y.H., Seo J.M., Lee H.M., Chung H.J., Sohn M.Y., Hwang S.Y., Im S.U., Jung E.J., Lee H.D., Kim J.C. Submitted (MAY-1999) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Hair follicle dermal papilla.
[4]	"Identification of a human cell growth inhibiting gene." Kim J.W. Submitted (FEB-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[5]	"Cloning of human full open reading frames in Gateway(TM) system entry vector (pDONR201)." Ebert L., Schick M., Neubert P., Schatten R., Henze S., Korn B. Submitted (JUN-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
[6]	"Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., Sugano S. Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Brain cortex.
[7]	"The DNA sequence and analysis of human chromosome 13." Dunham A., Matthews L.H., Burton J., Ashurst J.L., Howe K.L., Ashcroft K.J., Beare D.M., Burford D.C., Hunt S.E., Griffiths-Jones S., Jones M.C., Keenan S.J., Oliver K., Scott C.E., Ainscough R., Almeida J.P., Ambrose K.D., Andrews D.T. , Ashwell R.I.S., Babbage A.K., Bagguley C.L., Bailey J., Bannerjee R., Barlow K.F., Bates K., Beasley H., Bird C.P., Bray-Allen S., Brown A.J., Brown J.Y., Burrill W., Carder C., Carter N.P., Chapman J.C., Clamp M.E., Clark S.Y., Clarke G., Clee C.M., Clegg S.C., Cobley V., Collins J.E., Corby N., Coville G.J., Deloukas P., Dhami P., Dunham I., Dunn M., Earthrowl M.E., Ellington A.G., Faulkner L., Frankish A.G., Frankland J., French L., Garner P., Garnett J., Gilbert J.G.R., Gilson C.J., Ghori J., Grafham D.V., Gribble S.M., Griffiths C., Hall R.E., Hammond S., Harley J.L., Hart E.A., Heath P.D., Howden P.J., Huckle E.J., Hunt P.J., Hunt A.R., Johnson C., Johnson D., Kay M., Kimberley A.M., King A., Laird G.K., Langford C.J., Lawlor S., Leongamornlert D.A., Lloyd D.M., Lloyd C., Loveland J.E., Lovell J., Martin S., Mashreghi-Mohammadi M., McLaren S.J., McMurray A., Milne S., Moore M.J.F., Nickerson T., Palmer S.A., Pearce A.V., Peck A.I., Pelan S., Phillimore B., Porter K.M., Rice C.M., Searle S., Sehra H.K., Shownkeen R., Skuce C.D., Smith M., Steward C.A., Sycamore N., Tester J., Thomas D.W., Tracey A., Tromans A., Tubby B., Wall M., Wallis J.M., West A.P., Whitehead S.L., Willey D.L., Wilming L., Wray P.W., Wright M.W., Young L., Coulson A., Durbin R.M., Hubbard T., Sulston J.E., Beck S., Bentley D.R., Rogers J., Ross M.T. Nature 428:522-528(2004) [PubMed: 15057823] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[8]	Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. , Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., Hunkapiller M.W., Myers E.W., Venter J.C. Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[9]	"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Hypothalamus.
[10]	Colinge J., Superti-Furga G., Bennett K.L. Submitted (OCT-2008) to UniProtKB Cited for: IDENTIFICATION [LARGE SCALE ANALYSIS], MASS SPECTROMETRY.
[11]	"Biochemical analysis of the EJC reveals two new factors and a stable tetrameric protein core." Tange T.O., Shibuya T., Jurica M.S., Moore M.J. RNA 11:1869-1883(2005) [PubMed: 16314458] [Abstract] Cited for: IDENTIFICATION IN A MRNA SPLICING-DEPENDENT EXON JUNCTION COMPLEX, IDENTIFICATION IN A HETEROTRIMERIC COMPLEX, SUBCELLULAR LOCATION, MASS SPECTROMETRY.
[12]	"Lys-N and trypsin cover complementary parts of the phosphoproteome in a refined SCX-based approach." Gauci S., Helbig A.O., Slijper M., Krijgsveld J., Heck A.J., Mohammed S. Anal. Chem. 81:4493-4501(2009) [PubMed: 19413330] [Abstract] Cited for: ACETYLATION [LARGE SCALE ANALYSIS] AT ALA-2, MASS SPECTROMETRY.
+	Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ

U96915 mRNA. Translation: AAC51322.1.
U78303 mRNA. Translation: AAF21220.1.
AF153608 mRNA. Translation: AAD41090.1.
AY550970 mRNA. Translation: AAT52216.1.
CR457035 mRNA. Translation: CAG33316.1.
AK311748 mRNA. Translation: BAG34691.1.
AL158032 Genomic DNA. Translation: CAH69949.1.
CH471075 Genomic DNA. Translation: EAX08291.1.
BC030836 mRNA. Translation: AAH30836.1.

IPI

IPI00940972.

RefSeq

NP_005861.2.

UniGene

Hs.524899

3D structure databases

PDBe
RCSB PDB
PDBj

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
2HDE	NMR	-	A	6-149	[»]

ModBase

Search...

Protein-protein interaction databases

IntAct

O00422. 32 interactions.

STRING

O00422.

Protein family/group databases

TCDB

3.A.18.1.1. nuclear mRNA exporter (mRNA-E) family.

PTM databases

PhosphoSite

O00422.

Proteomic databases

PeptideAtlas

O00422.

PRIDE

O00422.

Genome annotation databases

Ensembl

ENST00000382533; ENSP00000371973; ENSG00000150459; Homo sapiens. [Genome view]
ENST00000425456; ENSP00000405383; ENSG00000150459; Homo sapiens. [Genome view]

GeneID

10284.

KEGG

hsa:10284.

UCSC

uc001uns.1. human.

Organism-specific databases

CTD

10284.

GeneCards

GC13P020612.

H-InvDB

HIX0011163.

HGNC

HGNC:10530. SAP18.

HPA

CAB012273.
HPA011352.

MIM

602949. gene.

PharmGKB

PA34940.

GenAtlas

Search...

Phylogenomic databases

eggNOG

prNOG05651.

HOGENOM

HBG745731.

HOVERGEN

O00422.

InParanoid

O00422.

OrthoDB

EOG9258C8.

PhylomeDB

O00422.

Enzyme and pathway databases

Pathway_Interaction_DB

hedgehog_glipathway. Hedgehog signaling events mediated by Gli proteins.
smad2_3nuclearpathway. Regulation of nuclear SMAD2/3 signaling.
telomerasepathway. Regulation of Telomerase.
hdac_classi_pathway. Signaling events mediated by HDAC Class I.

Gene expression databases

ArrayExpress

O00422.

Bgee

O00422.

CleanEx

HS_SAP18.

Genevestigator

O00422.

GermOnline

ENSG00000150459. Homo sapiens.

Family and domain databases

InterPro

IPR017250. Hist_deAcase_cplx_SAP18_su.
IPR010516. SAP18.
[Graphical view]

PANTHER

PTHR13082. SAP18. 1 hit.

Pfam

PF06487. SAP18. 1 hit.
[Graphical view]

PIRSF

PIRSF037637. HDAC_SAP18. 1 hit.

ProtoNet

Search...

Other Resources

NextBio

38964.

SOURCE

Search...

Entry information

Entry name

SAP18_HUMAN

Accession

Primary (citable) accession number: O00422
Secondary accession number(s): B2R494 , Q2TTR4, Q6IAW9, Q8N606, Q9UF14

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 30, 2000
Last sequence update:	July 1, 1997
Last modified:	January 19, 2010
This is version 83 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)

Disclaimer

Any 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.