Reviewed, UniProtKB/Swiss-Prot O15123 (ANGP2_HUMAN)

Names and origin

Protein names

Recommended name:
    Angiopoietin-2
      Short name(s)=ANG-2

Gene names

Name:

ANGPT2

Organism

Homo sapiens (Human)

Taxonomic identifier

9606 [NCBI]

Taxonomic lineage

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

Protein attributes

Sequence length	496 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	Binds to TIE2 receptor and counteracts blood vessel maturation/stability mediated by angiopoietin-1. Its function may be context-dependent. In the absence of angiogenic inducers, such as VEGF, ANG2-mediated loosening of cell-matrix contacts may induce endothelial cell apoptosis with consequent vascular regression. In concert with VEGF, it may facilitate endothelial cell migration and proliferation, thus serving as a permissive angiogenic signal.
Subcellular location	Secreted.
Sequence similarities	Contains 1 fibrinogen C-terminal domain.

Ontologies

Keywords
Biological process	Angiogenesis Differentiation
Cellular component	Secreted
Coding sequence diversity	Alternative splicing
Domain	Coiled coil Signal
Molecular function	Developmental protein
PTM	Glycoprotein
Technical term	3D-structure
Gene Ontology (GO)
Biological process	signal transduction Ref.3 Traceable author statement. Source: ProtInc
Cellular component	extracellular space Ref.3 Traceable author statement. Source: ProtInc
Molecular function	receptor binding Ref.1 Ref.3 Traceable author statement. Source: ProtInc
Complete GO annotation...

Alternative products

This entry describes 2 isoforms produced by alternative splicing. [Align] [Select]

Isoform 1 (identifier: O15123-1)

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: O15123-2)

The sequence of this isoform differs from the canonical sequence as follows:
     97-148: Missing.

Sequence annotation (Features)

Feature key

Position(s)

Length

Description

Graphical view

Molecule processing

Signal peptide

1 – 18

18

Potential

Chain

19 – 496

478

Angiopoietin-2

Regions

Domain

280 – 496

217

Fibrinogen C-terminal

Coiled coil

166 – 248

83

Potential

Amino acid modifications

Glycosylation

89

1

N-linked (GlcNAc...) Potential

Glycosylation

119

1

N-linked (GlcNAc...) Potential

Glycosylation

133

1

N-linked (GlcNAc...) Potential

Glycosylation

151

1

N-linked (GlcNAc...) Potential

Glycosylation

240

1

N-linked (GlcNAc...) Potential

Glycosylation

304

1

N-linked (GlcNAc...) Potential

Disulfide bond

284 ↔ 313

By similarity

Disulfide bond

437 ↔ 450

By similarity

Natural variations

Alternative sequence

97 – 148

52

Missing in isoform 2.

Experimental info

Sequence conflict

268

1

Missing in BAA95590. Ref.2

Secondary structure

1

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496

Helix Strand Turn

Details...

Helix

284 – 288

5

Turn

289 – 291

3

Beta strand

296 – 301

6

Beta strand

308 – 314

7

Beta strand

322 – 331

10

Helix

339 – 344

6

Beta strand

351 – 353

3

Helix

357 – 366

10

Beta strand

369 – 376

8

Beta strand

382 – 392

11

Helix

395 – 397

3

Beta strand

401 – 410

10

Beta strand

431 – 435

5

Helix

437 – 441

5

Beta strand

448 – 450

3

Beta strand

452 – 454

3

Helix

475 – 478

4

Beta strand

485 – 493

9

Sequences

	Sequence		Length	Mass (Da)
	Isoform 1 [UniParc]. Last modified January 1, 1998. Version 1. Checksum: 5642A58847A7385C	FASTA	496	56,919
	10 20 30 40 50 60 MWQIVFFTLS CDLVLAAAYN NFRKSMDSIG KKQYQVQHGS CSYTFLLPEM DNCRSSSSPY 70 80 90 100 110 120 VSNAVQRDAP LEYDDSVQRL QVLENIMENN TQWLMKLENY IQDNMKKEMV EIQQNAVQNQ 130 140 150 160 170 180 TAVMIEIGTN LLNQTAEQTR KLTDVEAQVL NQTTRLELQL LEHSLSTNKL EKQILDQTSE 190 200 210 220 230 240 INKLQDKNSF LEKKVLAMED KHIIQLQSIK EEKDQLQVLV SKQNSIIEEL EKKIVTATVN 250 260 270 280 290 300 NSVLQKQQHD LMETVNNLLT MMSTSNSAKD PTVAKEEQIS FRDCAEVFKS GHTTNGIYTL 310 320 330 340 350 360 TFPNSTEEIK AYCDMEAGGG GWTIIQRRED GSVDFQRTWK EYKVGFGNPS GEYWLGNEFV 370 380 390 400 410 420 SQLTNQQRYV LKIHLKDWEG NEAYSLYEHF YLSSEELNYR IHLKGLTGTA GKISSISQPG 430 440 450 460 470 480 NDFSTKDGDN DKCICKCSQM LTGGWWFDAC GPSNLNGMYY PQRQNTNKFN GIKWYYWKGS 490 GYSLKATTMM IRPADF
	Isoform 2 [UniParc]. Checksum: E512409CE73987A1		444	50,958
	10 20 30 40 50 60 MWQIVFFTLS CDLVLAAAYN NFRKSMDSIG KKQYQVQHGS CSYTFLLPEM DNCRSSSSPY 70 80 90 100 110 120 VSNAVQRDAP LEYDDSVQRL QVLENIMENN TQWLMKVLNQ TTRLELQLLE HSLSTNKLEK 130 140 150 160 170 180 QILDQTSEIN KLQDKNSFLE KKVLAMEDKH IIQLQSIKEE KDQLQVLVSK QNSIIEELEK 190 200 210 220 230 240 KIVTATVNNS VLQKQQHDLM ETVNNLLTMM STSNSAKDPT VAKEEQISFR DCAEVFKSGH 250 260 270 280 290 300 TTNGIYTLTF PNSTEEIKAY CDMEAGGGGW TIIQRREDGS VDFQRTWKEY KVGFGNPSGE 310 320 330 340 350 360 YWLGNEFVSQ LTNQQRYVLK IHLKDWEGNE AYSLYEHFYL SSEELNYRIH LKGLTGTAGK 370 380 390 400 410 420 ISSISQPGND FSTKDGDNDK CICKCSQMLT GGWWFDACGP SNLNGMYYPQ RQNTNKFNGI 430 440 KWYYWKGSGY SLKATTMMIR PADF

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Angiopoietin-2, a natural antagonist for Tie2 that disrupts in vivo angiogenesis." Maisonpierre P.C., Suri C., Jones P.F., Bartunkova S., Wiegand S.J., Radziejewski C., Compton D.L., McClain J., Aldrich T.H., Papadopoulos N., Daly T.J., Davis S., Sato T.N., Yancopoulos G.D. Science 277:55-60(1997) [PubMed: 9204896] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). Tissue: Lung.
[2]	"Biologic significance of angiopoietin-2 expression in human hepatocellular carcinoma." Tanaka S., Mori M., Sakamoto Y., Makuuchi M., Sugimachi K., Wands J.R. J. Clin. Invest. 103:341-345(1999) [PubMed: 9927494] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[3]	"Characterization and expression of a novel alternatively spliced human angiopoietin-2." Kim I., Kim J.-H., Ryu Y.S., Jung S.H., Nah J.J., Koh G.Y. J. Biol. Chem. 275:18550-18556(2000) [PubMed: 10766762] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2). Tissue: Umbilical vein endothelial cell.
[4]	"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] (ISOFORM 1). Tissue: Colon.

Web resources

Wikipedia

Angiopoietin entry

Cross-references

Sequence databases

EMBLGenBankDDBJ

AF004327 mRNA. Translation: AAB63190.1.
AB009865 mRNA. Translation: BAA95590.1.
AF187858 mRNA. Translation: AAF76526.1.
BC126200 mRNA. Translation: AAI26201.1.
BC126202 mRNA. Translation: AAI26203.1.

RefSeq

NP_001112359.1.
NP_001112360.1.
NP_001138.1.

UniGene

Hs.583870

3D structure databases

PDBMSD

Entry	Method	Resolution (Å)	Chain	Positions	PDBsum
1Z3S	X-ray	2.35	A/B	281-496	[»]
1Z3U	X-ray	2.25	A/B/C/D	280-496	[»]
2GY7	X-ray	3.70	A	281-495	[»]

ModBase

Search...

Protein-protein interaction databases

DIP

DIP:6048N.

PTM databases

PhosphoSite

O15123.

Genome annotation databases

Ensembl

ENSG00000091879. Homo sapiens. [Contig view]

GeneID

285.

KEGG

hsa:285.

Organism-specific databases

H-InvDB

HIX0034233.

HGNC

HGNC:485. ANGPT2.

HPA

CAB011437.
CAB017626.

MIM

601922. gene.

PharmGKB

PA24792.

GenAtlas

Search...

GeneCards

Search...

GeneLynx

Search...

Phylogenomic databases

HOGENOM

O15123.

HOVERGEN

O15123.

Gene expression databases

ArrayExpress

O15123.

CleanEx

HS_ANGPT2.

GermOnline

ENSG00000091879. Homo sapiens.

Family and domain databases

InterPro

IPR002181. Fibrinogen_a/b/g_C.
IPR014716. Fibrinogen_a/b/g_C_1.
[Graphical view]

Gene3D

G3DSA:3.90.215.10. Fibrinogen_a/b/g_C_1. 1 hit.

Pfam

PF00147. Fibrinogen_C. 1 hit.
[Graphical view]

SMART

SM00186. FBG. 1 hit.
[Graphical view]

PROSITE

PS00514. FIBRIN_AG_C_DOMAIN. 1 hit.
[Graphical view]

ProDom

O15123.
[Graphical view] [Entries sharing at least one domain]

BLOCKS

Search...

Other Resources

SOURCE

Search...

ProtoNet

Search...

Entry information

Entry name

ANGP2_HUMAN

Accession

Primary (citable) accession number: O15123
Secondary accession number(s): A0AV38, Q9NRR7, Q9P2Y7

Entry history

Integrated into UniProtKB/Swiss-Prot:	December 1, 2000
Last sequence update:	January 1, 1998
Last modified:	July 22, 2008
This is version 68 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)