Biological process  Cell growth and/or maintenance  Molecular function  Structural constituent of cytoskeleton   Protein   keratin 4  Gene symbol   KRT4    Cellular component           Component Cytoplasm         Experimental evidence      Total number of studies : 4       Peptide sequence Method Platform  Sample  Reference Mass spectrometry LTQ Orbitrap Velos Plasma Kalra et al. 2013 Mass spectrometry LTQ linear ion trap Plasma Tu et al. 2005 Mass spectrometry LTQ FT Serum Sennels et al. 2007 Mass spectrometry - Plasma Farrah et al. 2011          Multiple reaction monitoring data           Peptide sequence MH+ Sample Number of studies Reference Data not present           Protein concentration             Protein concentration Method Sample Reference 28  μg/ml Spectral counting  Plasma Farrah et al. 2011           Extracellular vesicle proteins             Sample Isolation  Experimental method Vesiclepedia accession Reference Data not present          Architecture           Domains Motifs CC   266 - 353 CC   208 - 242 CC   402 - 507          External links           HPRD UniProt NetPath  00478  P19013  NetPath_M3851             Protein sequence  NP_002263.2               MTSVGVFSDM LNGCGKDGLV PRAKPRDVSD FSLYAPATKP CCSRTYKRRR LRAPALTGLG PVTSLIAPSS LSAAMIARQQ CVRGGPRGFS CGSAIVGGGK RGAFSSVSMS GGAGRCSSGG FGSRSLYNLR GNKSISMSVA GSRQGACFGG AGGFGTGGFG GGFGGSFSGK GGPGFPVCPA GGIQEVTINQ SLLTPLHVEI DPEIQKVRTE EREQIKLLNN KFASFIDKVQ FLEQQNKVLE TKWNLLQQQT TTTSSKNLEP LFETYLSVLR KQLDTLGNDK GRLQSELKTM QDSVEDFKTK YEEEINKRTA AENDFVVLKK DVDAAYLNKV ELEAKVDSLN DEINFLKVLY DAELSQMQTH VSDTSVVLSM DNNRNLDLDS IIAEVRAQYE EIAQRSKAEA EALYQTKVQQ LQISVDQHGD NLKNTKSEIA ELNRMIQRLR AEIENIKKQC QTLQVSVADA EQRGENALKD AHSKRVELEA ALQQAKEELA RMLREYQELM SVKLALDIEI ATYRKLLEGE EYRMSGECQS AVSISVVSGS TSTGGISGGL GSGSGFGLSS GFGSGSGSGF GFGGSVSGSS SSKIISTTTL NKRR