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   Fibrinogen alpha chain

SourceRattus norvegicus (Norway rat)
Taxonomy Rattus norvegicus Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Sciurognathi; Muroidea; Muridae; Murinae; Rattus.
KeywordsAlternative splicing; Blood coagulation; Coiled coil; Direct protein sequencing; Disulfide bond; Glycoprotein; Phosphoprotein; Secreted; Signal.
Details
Function: Fibrinogen has a double function: yielding monomers that polymerize into fibrin and acting as a cofactor in platelet aggregation.

Post-translational modification: The alpha chain is not glycosylated. Conversion of fibrinogen to fibrin is triggered by thrombin, which cleaves fibrinopeptides A and B from alpha and beta chains, and thus exposes the N-terminal polymerization sites responsible for the formation of the soft clot. The soft clot is converted into the hard clot by factor XIIIA which catalyzes the epsilon-(gamma-glutamyl)lysine cross-linking between gamma chains (stronger) and between alpha chains (weaker) of different monomers. Forms F13A-mediated cross-links between a glutamine and the epsilon-amino group of a lysine residue, forming fibronectin-fibrinogen heteropolymers. Phosphorylation sites are present in the extracelllular medium (By similarity).

Similarity: Contains 1 fibrinogen C-terminal domain.

Subcellular location: Secreted.

Subunit structure: Heterohexamer; disulfide linked. Contains 2 sets of 3 non-identical chains (alpha, beta and gamma). The 2 heterotrimers are in head to head conformation with the N-termini in a small central domain (By similarity).

Alternative products: Event=Alternative splicing; Named isoforms=2; Name=1; Synonyms=Alpha-E; IsoId=P06399-1; Sequence=Displayed; Name=2; Synonyms=Alpha; IsoId=P06399-2; Sequence=VSP_001533, VSP_001534; Note=Major isoform.

Sequence length: 782 AA.

Sequence
MLSLRVACLILSLASTVWTADTGTTSEFIEAGGDIRGPRIVERQPSQCKETDWPFCSDED
WNHKCPSGCRMKGLIDEANQDFTNRINKLKNSLFDFQKNNKDSNSLTRNIMEYLRGDFAN
ANNFDNTFGQVSEDLRRRIQILKRKVIEKAQQIQVLQKDVRDQLIDMKRLEVDIDIKIRS
CKGSCSRSVSREINLKDYEGQQKQLEQVIAKDLLPAKDRQYLPAIKMSPVPDLVPGSFKS
QLQEGPPEWKALTEMRQMRMELERPGKDGASRGDLPGDSRGDSATRGPGSKIENPMTPGH
GGSGYWRPGSSGSGSDGNWGSGTTGSDDTGTWGAGSSRPSSGSGNLKPSNPDWGEFSEFG
GSSSPATRKEYHTGKLVTSKGDKELLIGNEKVTSTGTSTTRRSCSKTITKTVLGNDGHRE
VVKEVVTSDDGSDCGDGMDLGLTHSFSGRLDELSRMHPELGSFYDSRFGSLTSNFKEFGS
KTSDSDIFTDIENPSSHVPEFSSSSKTSTVRKQVTKSYKMADEAASEAHQEGDTRTTKRG
RARTMRDCDDVLQTHPSGAQNGIFSIKLPGSSKIFSVYCDQETSLGGWLLIQQRMDGSLN
FNRTWQDYKRGFGSLNDKGEGEFWLGNDYLHLLTLRGSVLRVELEDWAGKEAYAEYHFRV
GSEAEGYALQVSSYQGTAGDALMEGSVEEGTEYTSHSNMQFSTFDRDADQWEENCAEVYG
GGWWYNSCQAANLNGIYYPGGTYDPRNNSPYEIENGVLWVPFRGADYSLWAVRMKIRPLV
GQ
Accession NumberP06399 
PubMed ID4046033, 3817019 
Ensembl DBENSRNOT00000012192
CATHG3DSA:3.90.215.10, G3DSA:1.20.5.50
GermOnline DBENSRNOG00000024848
GO DB0005577, 0030674, 0005102, 0030168, 0051258, 0007165, 0042246
InterPro DBIPR002181, IPR014716, IPR012290, IPR014814, IPR020837
IPI DBIPI00202651, IPI00382317
NCBIX86561, CAA60264, CAA60263, M35601, AAA41158
OMIM105200, 134820, 202400
PfamPF08702, PF00147
PROSITE DBPS00514, PS51406
SMART DBSM00186
UCSCNM_001008724
UniGeneRn.98846



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