Reviewed, UniProtKB/Swiss-Prot P33588 (VSP1_AGKBI)

Names and origin

Protein names	Recommended name:     Ancrod     EC=3.4.21.74 Alternative name(s):     Venombin-A     Protein C activator     ACC-C
Organism	Agkistrodon bilineatus (Cantil) (Tropical moccasin)
Taxonomic identifier	8718 [NCBI]
Taxonomic lineage	Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Lepidosauria › Squamata › Scleroglossa › Serpentes › Colubroidea › Viperidae › Crotalinae › Agkistrodon

Protein attributes

Sequence length	20 AA.
Sequence status	Fragment.
Sequence processing	The displayed sequence is not processed.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Thrombin-like snake venom serine protease. Activates protein C.
Catalytic activity	Selective cleavage of Arg-|-Xaa bond in fibrinogen, to form fibrin, and release fibrinopeptide A. The specificity of further degradation of fibrinogen varies with species origin of the enzyme.
Subcellular location	Secreted Potential.
Tissue specificity	Expressed by the venom gland.
Sequence similarities	Belongs to the peptidase S1 family. Snake venom subfamily. Contains 1 peptidase S1 domain.

Ontologies

Keywords
Cellular component	Secreted
Molecular function	Hydrolase Protease Serine protease Toxin
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	pathogenesis Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	extracellular region Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular function	serine-type peptidase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – ›20	›20	Ancrod		PRO_0000088724
Regions
	Domain	1 – ›20	›20	Peptidase S1
Experimental info
	Non-terminal residue	20	1

Sequences

	Sequence		Length	Mass (Da)
	P33588-1 [UniParc]. Last modified February 1, 1994. Version 1. Checksum: 6E99F8B4CC53EFE1	FASTA	20	2,191
	10 20 VVGGDECNIN EHRSLALMYA

References

[1]	"Isolation and characterization of a protein C activator from tropical moccasin venom." Nakagaki T., Kazim A.L., Kisiel W. Thromb. Res. 58:593-602(1990) [PubMed: 2385829] [Abstract] Cited for: PROTEIN SEQUENCE. Tissue: Venom.

Cross-references

Sequence databases
PIR	A60489.
3D structure databases
ModBase	Search...
Protein family/group databases
MEROPS	S01.178.
Phylogenomic databases
HOVERGEN	P33588.
Enzyme and pathway databases
BRENDA	3.4.21.74. 279476.
Family and domain databases
InterPro	IPR018114. Peptidase_S1/S6_AS. [Graphical view]
PROSITE	PS50240. TRYPSIN_DOM. Partial match. PS00134. TRYPSIN_HIS. Partial match. PS00135. TRYPSIN_SER. Partial match. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

VSP1_AGKBI

Accession

Primary (citable) accession number: P33588

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 1, 1994
Last sequence update:	February 1, 1994
Last modified:	June 16, 2009
This is version 47 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

Tox-Prot (Toxin Annotation Project)