Reviewed, UniProtKB/Swiss-Prot P08697 (A2AP_HUMAN)

Names and origin

Protein names

Recommended name:
    Alpha-2-antiplasmin
      Short name=Alpha-2-AP
Alternative name(s):
    Alpha-2-plasmin inhibitor
      Short name=Alpha-2-PI

Gene names

Name:	SERPINF2
Synonyms:	AAP, PLI

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	491 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	The major targets of this inhibitor are plasmin and trypsin, but it also inactivates chymotrypsin.
Subcellular location	Secreted.
Tissue specificity	Expressed by the liver and secreted in plasma.
Involvement in disease	Defects in SERPINF2 are the cause of alpha-2-plasmin inhibitor deficiency (APLID) [MIM:262850]. APLID is an autosomal recessive disorder resulting in severe hemorrhagic diathesis.
Sequence similarities	Belongs to the serpin family.

Ontologies

Keywords
Biological process	Acute phase
Cellular component	Secreted
Coding sequence diversity	Polymorphism
Disease	Disease mutation
Domain	Signal
Molecular function	Protease inhibitor Serine protease inhibitor
PTM	Glycoprotein Sulfation
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	acute-phase response Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	extracellular region Non-traceable author statement. Source: UniProtKB nucleus Inferred from direct assay. Source: HPA platelet alpha granule lumen Inferred from Experiment. Source: Reactome
Molecular function	protein binding Inferred from physical interaction. Source: UniProtKB serine-type endopeptidase inhibitor activity Ref.4 Non-traceable author statement. Source: UniProtKB
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 27	27
	Propeptide	28 – 39	12			PRO_0000032511
	Chain	40 – 491	452	Alpha-2-antiplasmin		PRO_0000032512
Sites
	Site	403 – 404	2	Reactive bond for plasmin
	Site	404 – 405	2	Reactive bond for chymotrypsin
Amino acid modifications
	Modified residue	484	1	Sulfotyrosine
	Glycosylation	126	1	N-linked (GlcNAc...)
	Glycosylation	295	1	N-linked (GlcNAc...)
	Glycosylation	309	1	N-linked (GlcNAc...)
	Glycosylation	316	1	N-linked (GlcNAc...) Potential
	Disulfide bond	70 ↔ 143
	Cross-link	41		Isoglutamyl lysine isopeptide (Gln-Lys) (interchain with K-322 in alpha-fibrinogen)
Natural variations
	Natural variant	27	1	A → V		VAR_013252
	Natural variant	33	1	R → W		VAR_013253
	Natural variant	176	1	Missing in APLID; variant Okinawa; probably blocks intracellular transport of alpha-2-plasmin inhibitor.		VAR_013254
	Natural variant	411	1	V → M in APLID.		VAR_013255
	Natural variant	434	1	R → K		VAR_013256
Experimental info
	Sequence conflict	49	1	L → G AA sequence Ref.6
	Sequence conflict	105	1	N → D AA sequence Ref.6
	Sequence conflict	289	1	H → D in AAA35543. Ref.4
	Sequence conflict	408	1	S → G AA sequence Ref.6
	Sequence conflict	455	1	D → N AA sequence Ref.6

Sequences

	Sequence		Length	Mass (Da)
	P08697-1 [UniParc]. Last modified November 1, 1990. Version 3. Checksum: 385A1C90E91A63CB	FASTA	491	54,566
	10 20 30 40 50 60 MALLWGLLVL SWSCLQGPCS VFSPVSAMEP LGRQLTSGPN QEQVSPLTLL KLGNQEPGGQ 70 80 90 100 110 120 TALKSPPGVC SRDPTPEQTH RLARAMMAFT ADLFSLVAQT STCPNLILSP LSVALALSHL 130 140 150 160 170 180 ALGAQNHTLQ RLQQVLHAGS GPCLPHLLSR LCQDLGPGAF RLAARMYLQK GFPIKEDFLE 190 200 210 220 230 240 QSEQLFGAKP VSLTGKQEDD LANINQWVKE ATEGKIQEFL SGLPEDTVLL LLNAIHFQGF 250 260 270 280 290 300 WRNKFDPSLT QRDSFHLDEQ FTVPVEMMQA RTYPLRWFLL EQPEIQVAHF PFKNNMSFVV 310 320 330 340 350 360 LVPTHFEWNV SQVLANLSWD TLHPPLVWER PTKVRLPKLY LKHQMDLVAT LSQLGLQELF 370 380 390 400 410 420 QAPDLRGISE QSLVVSGVQH QSTLELSEVG VEAAAATSIA MSRMSLSSFS VNRPFLFFIF 430 440 450 460 470 480 EDTTGLPLFV GSVRNPNPSA PRELKEQQDS PGNKDFLQSL KGFPRGDKLF GPDLKLVPPM 490 EEDYPQFGSP K

References

	« Hide 'large scale' referencesShow 'large scale' references »
[1]	"Structure of human alpha 2-plasmin inhibitor deduced from the cDNA sequence." Tone M., Kikuno R., Kume-Iwaki A., Hashimoto-Gotoh T. J. Biochem. 102:1033-1041(1987) [PubMed: 2830248] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA]. Tissue: Liver.
[2]	"Organization of the human alpha 2-plasmin inhibitor gene." Hirosawa S., Nakamura Y., Miura O., Sumi Y., Aoki N. Proc. Natl. Acad. Sci. U.S.A. 85:6836-6840(1988) [PubMed: 3166140] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[3]	Erratum Hirosawa S., Nakamura Y., Miura O., Sumi Y., Aoki N. Proc. Natl. Acad. Sci. U.S.A. 86:1612-1613(1989)
[4]	"Primary structure of human alpha 2-antiplasmin, a serine protease inhibitor (serpin)." Holmes W.E., Nelles L., Lijnen H.R., Collen D. J. Biol. Chem. 262:1659-1664(1987) [PubMed: 2433286] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 4-491.
[5]	"Structure of the carboxyl-terminal half of human alpha 2-plasmin inhibitor deduced from that of cDNA." Sumi Y., Nakamura Y., Aoki N., Sakai M., Muramatsu M. J. Biochem. 100:1399-1402(1986) [PubMed: 3818581] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 218-491.
[6]	"Amino-acid sequence of human alpha 2-antiplasmin." Lijnen H.R., Holmes W.E., van Hoef B., Wiman B., Rodriguez H., Collen D. Eur. J. Biochem. 166:565-574(1987) [PubMed: 2440681] [Abstract] Cited for: PROTEIN SEQUENCE OF 40-491.
[7]	"Purification and characterization of human antiplasmin, the fast-acting plasmin inhibitor in plasma." Wiman B., Collen D. Eur. J. Biochem. 78:19-26(1977) [PubMed: 21075] [Abstract] Cited for: PROTEIN SEQUENCE OF 40-43.
[8]	"Bovine alpha 2-antiplasmin. N-terminal and reactive site sequence." Christensen S., Sottrup-Jensen L. FEBS Lett. 312:100-104(1992) [PubMed: 1385210] [Abstract] Cited for: PROTEIN SEQUENCE OF 28-52. Tissue: Plasma.
[9]	"Alpha-2-antiplasmin: a serpin with two separate but overlapping reactive sites." Potempa J., Shieh B.-H., Travis J. Science 241:699-700(1988) [PubMed: 2456616] [Abstract] Cited for: ACTIVE SITES.
[10]	"Assignment of a single disulphide bridge in human alpha2-antiplasmin: implications for the structural and functional properties." Christensen S., Valnickova Z., Thogersen I.B., Olsen E.H., Enghild J.J. Biochem. J. 323:847-852(1997) [PubMed: 9169621] [Abstract] Cited for: DISULFIDE BOND.
[11]	"Sulfation of a tyrosine residue in the plasmin-binding domain of alpha 2-antiplasmin." Hortin G., Fok K.F., Toren P.C., Strauss A.W. J. Biol. Chem. 262:3082-3085(1987) [PubMed: 2434496] [Abstract] Cited for: PROTEIN SEQUENCE OF 481-491, SULFATION.
[12]	"Human plasma N-glycoproteome analysis by immunoaffinity subtraction, hydrazide chemistry, and mass spectrometry." Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E., Moore R.J., Smith R.D. J. Proteome Res. 4:2070-2080(2005) [PubMed: 16335952] [Abstract] Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-126; ASN-295 AND ASN-309, MASS SPECTROMETRY. Tissue: Plasma.
[13]	"Hereditary alpha 2-plasmin inhibitor deficiency caused by a transport-deficient mutation (alpha 2-PI-Okinawa). Deletion of Glu137 by a trinucleotide deletion blocks intracellular transport." Miura O., Sugahara Y., Aoki N. J. Biol. Chem. 264:18213-18219(1989) [PubMed: 2572590] [Abstract] Cited for: VARIANT APLID GLU-176 DEL.
[14]	"A novel missense mutation in the human plasmin inhibitor (alpha2-antiplasmin) gene associated with a bleeding tendency." Lind B., Thorsen S. Br. J. Haematol. 107:317-322(1999) [PubMed: 10583218] [Abstract] Cited for: VARIANT APLID MET-411, VARIANTS VAL-27; TRP-33 AND LYS-434.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBLGenBankDDBJ	D00116 mRNA. Translation: BAA00070.1. D00174 mRNA. Translation: BAA00124.1. M20786 , M20782, M20783, M20784, M20785 Genomic DNA. Translation: AAA51554.1. J02654 mRNA. Translation: AAA35543.1.
PIR	ITHUA2. A31402.
RefSeq	NP_000925.2.
UniGene	Hs.159509
3D structure databases
HSSP	HSSP built from PDB template 1ANT based on UniProtKB P01008.
ModBase	Search...
Protein family/group databases
MEROPS	I04.023.
2-D gel databases
SWISS-2DPAGE	P08697.
Genome annotation databases
Ensembl	ENSG00000167711. Homo sapiens. [Contig view]
GeneID	5345.
KEGG	hsa:5345.
Organism-specific databases
H-InvDB	HIX0013407.
HGNC	HGNC:9075. SERPINF2.
HPA	HPA001885.
MIM	262850. gene+phenotype.
PharmGKB	PA35522.
GenAtlas	Search...
GeneCards	Search...
Phylogenomic databases
HOGENOM	P08697.
HOVERGEN	P08697.
Enzyme and pathway databases
Reactome	REACT_604. Hemostasis.
Gene expression databases
ArrayExpress	P08697.
CleanEx	HS_SERPINF2.
Family and domain databases
InterPro	IPR000215. Protease_inhib_I4_serpin. [Graphical view]
PANTHER	PTHR11461. Prot_inh_serpin. 1 hit.
Pfam	PF00079. Serpin. 1 hit. [Graphical view]
SMART	SM00093. SERPIN. 1 hit. [Graphical view]
PROSITE	PS00284. SERPIN. 1 hit. [Graphical view]
ProtoNet	Search...
Other Resources
DrugBank	DB00086. Streptokinase.
NextBio	20714.
SOURCE	Search...

Entry information

Entry name

A2AP_HUMAN

Accession

Primary (citable) accession number: P08697

Entry history

Integrated into UniProtKB/Swiss-Prot:	January 1, 1988
Last sequence update:	November 1, 1990
Last modified:	November 25, 2008
This is version 103 of the entry and version 3 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)