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Reviewed, UniProtKB/Swiss-Prot Q06481 (APLP2_HUMAN)

Last modified December 15, 2009. Version 109. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (5) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Amyloid-like protein 2
Alternative name(s):
    Amyloid protein homolog
    APPH
    CDEI box-binding protein
      Short name=CDEBP
Gene names
Name: APLP2
Synonyms: APPL2
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length763 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

May play a role in the regulation of hemostasis. The soluble form may have inhibitory properties towards coagulation factors. May interact with cellular G-protein signaling pathways. May bind to the DNA 5'-GTCACATG-3'(CDEI box). Inhibits trypsin, chymotrypsin, plasmin, factor XIA and plasma and glandular kallikrein. Ref.7

Subunit structure

Interacts with CPEB1 By similarity.

Subcellular location

Cell membrane; Single-pass type I membrane protein Potential. Nucleus Potential.

Tissue specificity

In placenta, brain, heart, lung, liver, kidney and endothelial tissues.

Post-translational modification

The BPTI/Kunitz inhibitor domain is O-glycosylated. Ref.7

Sequence similarities

Belongs to the APP family.

Contains 1 BPTI/Kunitz inhibitor domain.

Binary interactions

Alternative products

This entry describes 5 isoforms produced by alternative splicing. [Align] [Select]

Note: Additional isoforms seem to exist.
Isoform 1 (identifier: Q06481-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: Q06481-2)

The sequence of this isoform differs from the canonical sequence as follows:
     308-363: Missing.
Isoform 3 (identifier: Q06481-3)

The sequence of this isoform differs from the canonical sequence as follows:
     613-624: Missing.
Isoform 4 (identifier: Q06481-4)

The sequence of this isoform differs from the canonical sequence as follows:
     308-363: Missing.
     613-624: Missing.
Isoform 5 (identifier: Q06481-5)

The sequence of this isoform differs from the canonical sequence as follows:
     136-364: Missing.
     613-624: Missing.
Note: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Signal peptide1 – 2929 Potential
Chain30 – 763734Amyloid-like protein 2
PRO_0000000207

Regions

Topological domain30 – 692663Extracellular Potential
Transmembrane693 – 71624 Potential
Topological domain717 – 76347Cytoplasmic Potential
Domain306 – 36459BPTI/Kunitz inhibitor
Compositional bias215 – 28066Asp/Glu-rich (highly acidic)
Compositional bias215 – 23117Poly-Glu

Sites

Site320 – 3212Reactive bond By similarity

Amino acid modifications

Modified residue7501Phosphotyrosine Ref.8 Ref.9
Modified residue7551Phosphotyrosine Ref.8
Disulfide bond310 ↔ 360 By similarity
Disulfide bond319 ↔ 343 By similarity
Disulfide bond335 ↔ 356 By similarity

Natural variations

Alternative sequence136 – 364229Missing in isoform 5.
VSP_030921
Alternative sequence308 – 36356Missing in isoform 2 and isoform 4.
VSP_000018
Alternative sequence613 – 62412Missing in isoform 3, isoform 4 and isoform 5.
VSP_000019
Natural variant6321D → N: dbSNP rs3740881.
VAR_022039

Experimental info

Sequence conflict2241E → D in AAD47291. Ref.5
Sequence conflict3641I → V in AAA35601. Ref.4
Sequence conflict3641I → V in AAA36130. Ref.4
Sequence conflict5431S → I in AAA35526. Ref.1
Sequence conflict5431S → T in AAH04371. Ref.6

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified October 1, 1996. Version 2.
Checksum: CA3A7D6DDB8A28D0

FASTA76386,956
        10         20         30         40         50         60 
MAATGTAAAA ATGRLLLLLL VGLTAPALAL AGYIEALAAN AGTGFAVAEP QIAMFCGKLN 

        70         80         90        100        110        120 
MHVNIQTGKW EPDPTGTKSC FETKEEVLQY CQEMYPELQI TNVMEANQRV SIDNWCRRDK 

       130        140        150        160        170        180 
KQCKSRFVTP FKCLVGEFVS DVLLVPEKCQ FFHKERMEVC ENHQHWHTVV KEACLTQGMT 

       190        200        210        220        230        240 
LYSYGMLLPC GVDQFHGTEY VCCPQTKIIG SVSKEEEEED EEEEEEEDEE EDYDVYKSEF 

       250        260        270        280        290        300 
PTEADLEDFT EAAVDEDDED EEEGEEVVED RDYYYDTFKG DDYNEENPTE PGSDGTMSDK 

       310        320        330        340        350        360 
EITHDVKAVC SQEAMTGPCR AVMPRWYFDL SKGKCVRFIY GGCGGNRNNF ESEDYCMAVC 

       370        380        390        400        410        420 
KAMIPPTPLP TNDVDVYFET SADDNEHARF QKAKEQLEIR HRNRMDRVKK EWEEAELQAK 

       430        440        450        460        470        480 
NLPKAERQTL IQHFQAMVKA LEKEAASEKQ QLVETHLARV EAMLNDRRRM ALENYLAALQ 

       490        500        510        520        530        540 
SDPPRPHRIL QALRRYVRAE NKDRLHTIRH YQHVLAVDPE KAAQMKSQVM THLHVIEERR 

       550        560        570        580        590        600 
NQSLSLLYKV PYVAQEIQEE IDELLQEQRA DMDQFTASIS ETPVDVRVSS EESEEIPPFH 

       610        620        630        640        650        660 
PFHPFPALPE NEDTQPELYH PMKKGSGVGE QDGGLIGAEE KVINSKNKVD ENMVIDETLD 

       670        680        690        700        710        720 
VKEMIFNAER VGGLEEERES VGPLREDFSL SSSALIGLLV IAVAIATVIV ISLVMLRKRQ 

       730        740        750        760 
YGTISHGIVE VDPMLTPEER HLNKMQNHGY ENPTYKYLEQ MQI 

« Hide

Isoform 2.

Checksum: 1F45B94DAE88BC23
Show »

FASTA70780,721
Isoform 3.

Checksum: 788BCDC6E4487E18
Show »

FASTA75185,487
Isoform 4.

Checksum: E06B35911540A7FF
Show »

FASTA69579,252
Isoform 5.

Checksum: 993641BFC15ED6E0
Show »

FASTA52259,151

References

« Hide 'large scale' references
[1]"Molecular cloning of the cDNA for a human amyloid precursor protein homolog: evidence for a multigene family."
Sprecher C.A., Grant F.J., Grimm G., O'Hara P.J., Norris F., Norris K., Foster D.C.
Biochemistry 32:4481-4486(1993) [PubMed: 8485127] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
Tissue: Placenta.
[2]"Isolation and characterization of APLP2 encoding a homologue of the Alzheimer's associated amyloid beta protein precursor."
Wasco W., Gurubhagavatula S., Paradis M., Romano D.M., Sisodia S.S., Hyman B.T., Neve R.L., Tanzi R.E.
Nat. Genet. 5:95-99(1993) [PubMed: 8220435] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
Tissue: Brain.
[3]"A human amyloid precursor-like protein is highly homologous to a mouse sequence-specific DNA-binding protein."
von der Kammer H., Hanes J., Klaudiny J., Scheit K.H.
DNA Cell Biol. 13:1137-1143(1994) [PubMed: 7702756] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
Tissue: Ovary.
[4]"Cloning of a protein that binds to a recognition sequence in the APP promoter."
Vostrov A.A., Quitschke W.W., Schwarzman A.L., Blangy A., Cuzin F., Wesley U.V., Hagag N.G., Goldgaber D.
Submitted (AUG-1993) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 39-763 (ISOFORM 2), NUCLEOTIDE SEQUENCE [MRNA] OF 229-763 (ISOFORM 3), NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 4).
Tissue: Brain.
[5]"A new special gene in human testis (HSD-2)."
Wang L., Miao S., Fan H., Wang H.
Submitted (JUL-1999) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
Tissue: Testis.
[6]"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] (ISOFORMS 3 AND 5).
Tissue: Lung and Pancreas.
[7]"Expression, purification and characterization of a Kunitz-type protease inhibitor domain from human amyloid precursor protein homolog."
Petersen L.C., Bjorn S.E., Norris F., Norris K., Sprecher C., Foster D.C.
FEBS Lett. 338:53-57(1994) [PubMed: 8307156] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 305-362 (ISOFORMS 1/3), FUNCTION, GLYCOSYLATION.
[8]"Global survey of phosphotyrosine signaling identifies oncogenic kinases in lung cancer."
Rikova K., Guo A., Zeng Q., Possemato A., Yu J., Haack H., Nardone J., Lee K., Reeves C., Li Y., Hu Y., Tan Z., Stokes M., Sullivan L., Mitchell J., Wetzel R., Macneill J., Ren J.M. expand/collapse author list , Yuan J., Bakalarski C.E., Villen J., Kornhauser J.M., Smith B., Li D., Zhou X., Gygi S.P., Gu T.-L., Polakiewicz R.D., Rush J., Comb M.J.
Cell 131:1190-1203(2007) [PubMed: 18083107] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-750 AND TYR-755, MASS SPECTROMETRY.
[9]"An extensive survey of tyrosine phosphorylation revealing new sites in human mammary epithelial cells."
Heibeck T.H., Ding S.-J., Opresko L.K., Zhao R., Schepmoes A.A., Yang F., Tolmachev A.V., Monroe M.E., Camp D.G. II, Smith R.D., Wiley H.S., Qian W.-J.
J. Proteome Res. 8:3852-3861(2009) [PubMed: 19534553] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-750, MASS SPECTROMETRY.
Tissue: Mammary epithelium.
+Additional computationally mapped references.

Cross-references

Sequence databases

S60099 mRNA. Translation: AAC60589.1.
L09209 mRNA. Translation: AAA35526.1.
L27631 mRNA. Translation: AAC41701.1.
Z22572 mRNA. Translation: CAA80295.1.
L19597 mRNA. Translation: AAA35601.1.
L23113 mRNA. Translation: AAA36032.1.
L23114 mRNA. Translation: AAA36130.1.
AF168956 mRNA. Translation: AAD47291.1.
BC000373 mRNA. Translation: AAH00373.1.
BC004371 mRNA. Translation: AAH04371.1.
IPIIPI00031030.
IPI00220977.
IPI00220978.
IPI00334946.
IPI00884988.
PIRA49321.
S41082.
RefSeqNP_001135748.1.
NP_001135749.1.
NP_001135750.1.
NP_001633.1.

3D structure databases

SMRQ06481. Positions 47-139.
ModBaseSearch...

Protein-protein interaction databases

DIPDIP-31047N.
IntActQ06481. 8 interactions.
STRINGQ06481.

Protein family/group databases

MEROPSI02.016.

PTM databases

PhosphoSiteQ06481.

Proteomic databases

PRIDEQ06481.

Genome annotation databases

EnsemblENST00000263574; ENSP00000263574; ENSG00000084234; Homo sapiens. [Genome view]
GeneID334.
KEGGhsa:334.
UCSCuc001qfp.1. human.
uc001qfq.1. human.
uc001qfs.1. human.
uc001qft.1. human.
uc001qfv.1. human.

Organism-specific databases

CTD334.
GeneCardsGC11P129445.
HGNCHGNC:598. APLP2.
MIM104776. gene.
PharmGKBPA24885.
GenAtlasSearch...

Phylogenomic databases

HOVERGENQ06481.
InParanoidQ06481.
OMALHTIRHY.
OrthoDBEOG98PQ4R.

Gene expression databases

ArrayExpressQ06481.
BgeeQ06481.
CleanExHS_APLP2.
HS_APPL2.
GenevestigatorQ06481.
GermOnlineENSG00000084234. Homo sapiens.

Family and domain databases

InterProIPR008155. Amyloid_glyco.
IPR011178. Amyloid_glyco_Cu-bd.
IPR008154. Amyloid_glyco_extra.
IPR019744. Amyloid_glyco_extracell_CS.
IPR015849. Amyloid_glyco_heparin-bd.
IPR019745. Amyloid_glyco_intracell_CS.
IPR019543. APP_amyloid.
IPR002223. Prot_inh_Kunz-m.
[Graphical view]
Gene3DG3DSA:3.30.1490.140. Amyloid_glyco_Cu-bd. 1 hit.
G3DSA:3.90.570.10. Amyloid_glyco_heparin-bd. 1 hit.
G3DSA:4.10.410.10. Prot_inh_Kunz-m. 1 hit.
PfamPF02177. A4_EXTRA. 1 hit.
PF10515. APP_amyloid. 1 hit.
PF00014. Kunitz_BPTI. 1 hit.
[Graphical view]
PRINTSPR00203. AMYLOIDA4.
PR00759. BASICPTASE.
SMARTSM00006. A4_EXTRA. 1 hit.
SM00131. KU. 1 hit.
[Graphical view]
PROSITEPS00319. A4_EXTRA. 1 hit.
PS00320. A4_INTRA. 1 hit.
PS00280. BPTI_KUNITZ_1. 1 hit.
PS50279. BPTI_KUNITZ_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Other Resources

NextBio1383.
PMAP-CutDBQ06481.
SOURCESearch...

Entry information

Entry nameAPLP2_HUMAN
AccessionPrimary (citable) accession number: Q06481
Secondary accession number(s): Q13861 expand/collapse secondary AC list , Q14594, Q14662, Q71U10, Q7M4L3, Q9BT36
Entry history
Integrated into UniProtKB/Swiss-Prot: June 1, 1994
Last sequence update: October 1, 1996
Last modified: December 15, 2009
This is version 109 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)
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.

Relevant documents

Human chromosome 11

Human chromosome 11: entries, gene names and cross-references to MIM

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List of human entries with polymorphisms or disease mutations

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents