Feline foamy virus (FFV) (Feline syncytial virus)

Taxonomy: Viruses; Riboviria; Pararnavirae; Artverviricota; Revtraviricetes; Ortervirales; Retroviridae; Spumaretrovirinae; Felispumavirus

Average proteome isoelectric point is 6.76

Get precalculated fractions of proteins

Acidic
pI < 6.8
6.8-7.4
pI > 7.4
Basic
    
All



Virtual 2D-PAGE plot for 6 proteins (isoelectric point calculated using IPC2_protein)

Get csv file with sequences according to given criteria:
        -     Method 

     -  kDa    
                                                                                      

* You can choose from 21 different methods for calculating isoelectric point

Summary statistics related to proteome-wise predictions


    
Protein with the lowest isoelectric point:
>sp|O93209|POL_FFV Pro-Pol polyprotein OS=Feline foamy virus OX=53182 GN=pol PE=3 SV=1
MM1 pKa = 7.35ASKK4 pKa = 10.68YY5 pKa = 9.96PEE7 pKa = 4.47EE8 pKa = 4.82GPITEE13 pKa = 4.32GVEE16 pKa = 3.9EE17 pKa = 4.87DD18 pKa = 4.31FNSHH22 pKa = 5.06STSGLDD28 pKa = 3.29LTSVGKK34 pKa = 10.26NPEE37 pKa = 3.76HH38 pKa = 7.09PRR40 pKa = 11.84RR41 pKa = 11.84ILLVLQHH48 pKa = 6.71LIAYY52 pKa = 9.96AEE54 pKa = 4.07ATIKK58 pKa = 10.48KK59 pKa = 9.43QDD61 pKa = 3.46VPGPLLPILSPYY73 pKa = 8.82VMAWDD78 pKa = 3.9NPQNVVTRR86 pKa = 11.84LVNLGEE92 pKa = 4.14SWKK95 pKa = 10.62KK96 pKa = 10.65YY97 pKa = 10.12LLSPGWKK104 pKa = 9.86DD105 pKa = 3.19CGEE108 pKa = 4.43RR109 pKa = 11.84DD110 pKa = 3.29LTMLTRR116 pKa = 11.84EE117 pKa = 4.4LLVPGIGLVQIAATLTKK134 pKa = 10.08TYY136 pKa = 11.53VLMCNGRR143 pKa = 11.84CITGSRR149 pKa = 11.84TDD151 pKa = 4.09PDD153 pKa = 4.59CDD155 pKa = 3.64PLFCKK160 pKa = 10.36LLCWKK165 pKa = 10.5QNIQDD170 pKa = 3.66PRR172 pKa = 11.84EE173 pKa = 4.22CNLEE177 pKa = 3.96EE178 pKa = 3.82WCLYY182 pKa = 10.97SLDD185 pKa = 4.64PEE187 pKa = 5.24HH188 pKa = 7.78DD189 pKa = 4.22PLWDD193 pKa = 3.18PKK195 pKa = 10.5MIVRR199 pKa = 11.84RR200 pKa = 11.84HH201 pKa = 5.87RR202 pKa = 11.84NLLPYY207 pKa = 10.41CMRR210 pKa = 11.84PFLIWMNYY218 pKa = 8.54ISHH221 pKa = 6.89NPLTQQCIMMKK232 pKa = 8.51TLNMLWRR239 pKa = 11.84AQADD243 pKa = 3.93DD244 pKa = 4.37PSDD247 pKa = 3.67VASLYY252 pKa = 10.33PRR254 pKa = 11.84VKK256 pKa = 10.34VFKK259 pKa = 10.34ASHH262 pKa = 6.08FDD264 pKa = 3.25IFGSASGNSEE274 pKa = 4.33EE275 pKa = 4.11RR276 pKa = 11.84VSWAKK281 pKa = 10.44EE282 pKa = 3.45NSHH285 pKa = 6.72RR286 pKa = 11.84GEE288 pKa = 4.06YY289 pKa = 10.47SLLPSSDD296 pKa = 3.93DD297 pKa = 3.62EE298 pKa = 4.32EE299 pKa = 5.66EE300 pKa = 4.2EE301 pKa = 3.88MSEE304 pKa = 4.9RR305 pKa = 11.84EE306 pKa = 3.99EE307 pKa = 4.05LLCHH311 pKa = 7.32INQCQQKK318 pKa = 9.64LFYY321 pKa = 10.34PGGTTDD327 pKa = 3.53VLGMEE332 pKa = 4.57SNVWLTKK339 pKa = 9.95FVNIKK344 pKa = 9.77FPKK347 pKa = 7.17GTKK350 pKa = 9.96VILPDD355 pKa = 3.17GRR357 pKa = 11.84KK358 pKa = 9.46FIACDD363 pKa = 3.68PEE365 pKa = 4.86LKK367 pKa = 10.38PLLQEE372 pKa = 4.94LKK374 pKa = 10.49FLDD377 pKa = 3.98RR378 pKa = 11.84ATSEE382 pKa = 4.33SSDD385 pKa = 3.71SEE387 pKa = 4.27

Molecular weight: 44.22 kDa
Isoelectric point according different methods:





Protein with the highest isoelectric point:
>sp|O56861|ENV_FFV Envelope glycoprotein gp130 OS=Feline foamy virus OX=53182 GN=env PE=1 SV=1
MM1 pKa = 7.42ARR3 pKa = 11.84EE4 pKa = 4.23LNPLQLQQLYY14 pKa = 10.05INNGLQPNPGHH25 pKa = 6.78GDD27 pKa = 3.61IIAVRR32 pKa = 11.84FTGGPWGPGDD42 pKa = 2.77RR43 pKa = 11.84WARR46 pKa = 11.84VTIRR50 pKa = 11.84LQDD53 pKa = 3.4NTGQPLQVPGYY64 pKa = 9.02DD65 pKa = 4.03LEE67 pKa = 5.24PGIINLRR74 pKa = 11.84EE75 pKa = 4.75DD76 pKa = 3.22ILIAGPYY83 pKa = 9.54NLIRR87 pKa = 11.84TAFLDD92 pKa = 3.77LEE94 pKa = 4.41PARR97 pKa = 11.84GPEE100 pKa = 3.59RR101 pKa = 11.84HH102 pKa = 6.28GPFGDD107 pKa = 3.98GRR109 pKa = 11.84LQPGDD114 pKa = 3.59GLSEE118 pKa = 4.43GFQPITDD125 pKa = 3.89EE126 pKa = 4.63EE127 pKa = 4.24IQAEE131 pKa = 4.39VGTIGAARR139 pKa = 11.84NEE141 pKa = 3.61IRR143 pKa = 11.84LLRR146 pKa = 11.84EE147 pKa = 3.58ALQRR151 pKa = 11.84LQAGGVGRR159 pKa = 11.84PIPGAVLQPQPVIGPVIPINHH180 pKa = 6.27LRR182 pKa = 11.84SVIGNTPPNPRR193 pKa = 11.84DD194 pKa = 3.24VALWLGRR201 pKa = 11.84STAAIEE207 pKa = 4.46GVFPIVDD214 pKa = 3.25QVTRR218 pKa = 11.84MRR220 pKa = 11.84VVNALVASHH229 pKa = 7.41PGLTLTEE236 pKa = 4.26NEE238 pKa = 4.09AGSWNAAISALWRR251 pKa = 11.84KK252 pKa = 8.92AHH254 pKa = 6.16GAAAQHH260 pKa = 5.97EE261 pKa = 4.53LAGVLSDD268 pKa = 3.44INKK271 pKa = 9.9KK272 pKa = 10.51EE273 pKa = 4.34GIQTAFNLGMQFTDD287 pKa = 4.5GNWSLVWGIIRR298 pKa = 11.84TLLPGQALVTNAQSQFDD315 pKa = 4.18LMGDD319 pKa = 4.13DD320 pKa = 3.42IQRR323 pKa = 11.84AEE325 pKa = 4.01NFPRR329 pKa = 11.84VINNLYY335 pKa = 9.96TMLGLNIHH343 pKa = 5.95GQSIRR348 pKa = 11.84PRR350 pKa = 11.84VQTQPLQTRR359 pKa = 11.84PRR361 pKa = 11.84NPGRR365 pKa = 11.84SQQGQLNQPRR375 pKa = 11.84PQNRR379 pKa = 11.84ANQSYY384 pKa = 9.76RR385 pKa = 11.84PPRR388 pKa = 11.84QQQQHH393 pKa = 5.87SDD395 pKa = 3.42VPEE398 pKa = 3.82QRR400 pKa = 11.84DD401 pKa = 3.4QRR403 pKa = 11.84GPSQPPRR410 pKa = 11.84GSGGGYY416 pKa = 8.6NFRR419 pKa = 11.84RR420 pKa = 11.84NPQQPQRR427 pKa = 11.84YY428 pKa = 7.97GQGPPGPNPYY438 pKa = 10.03RR439 pKa = 11.84RR440 pKa = 11.84FGDD443 pKa = 3.53GGNPQQQGPPPNRR456 pKa = 11.84GPDD459 pKa = 3.16QGPRR463 pKa = 11.84PGGNPRR469 pKa = 11.84GGGRR473 pKa = 11.84GQGPRR478 pKa = 11.84NGGGSAAAVHH488 pKa = 5.29TVKK491 pKa = 10.86ASEE494 pKa = 4.19NEE496 pKa = 4.34TKK498 pKa = 10.65NGSAEE503 pKa = 4.0AVDD506 pKa = 3.95GGKK509 pKa = 10.3KK510 pKa = 9.93GGKK513 pKa = 9.22DD514 pKa = 2.99

Molecular weight: 55.53 kDa
Isoelectric point according different methods:





Peptides (in silico digests for buttom-up proteomics)

Below you can find in silico digests of the whole proteome with Trypsin, Chymotrypsin, Trypsin+LysC, LysN, ArgC proteases suitable for different mass spec machines.

Try
ESI
ChTry
ESI
ArgC
ESI
LysN
ESI
TryLysC
ESI

Try
MALDI
ChTry
MALDI
ArgC
MALDI
LysN
MALDI
TryLysC
MALDI

Try
LTQ
ChTry
LTQ
ArgC
LTQ
LysN
LTQ
TryLysC
LTQ

Try
MSlow
ChTry
MSlow
ArgC
MSlow
LysN
MSlow
TryLysC
MSlow

Try
MShigh
ChTry
MShigh
ArgC
MShigh
LysN
MShigh
TryLysC
MShigh

General Statistics

Number of major isoforms

Number of additional isoforms

Number of all proteins

Number of amino acids

Min. Seq. Length

Max. Seq. Length

Avg. Seq. Length

Avg. Mol. Weight

5

1

6

3561

209

1156

593.5

67.37

Amino acid frequency

Ala

Cys

Asp

Glu

Phe

Gly

His

Ile

Lys

Leu

4.521 ± 0.578

1.91 ± 0.613

4.802 ± 0.357

6.094 ± 0.541

3.061 ± 0.249

6.712 ± 1.555

2.443 ± 0.19

6.403 ± 0.718

6.375 ± 1.129

9.997 ± 0.595

Met

Asn

Gln

Pro

Arg

Ser

Thr

Val

Trp

Tyr

1.825 ± 0.357

5.392 ± 0.312

6.712 ± 0.807

5.336 ± 0.826

4.999 ± 0.846

6.15 ± 0.634

5.981 ± 0.544

5.532 ± 0.378

2.19 ± 0.224

3.566 ± 0.511
Note: For amino acid frequency statistics the error has been estimated with the bootstraping (x100) at the protein level

Most of the basic statistics you can see at this page can be downloaded from this CSV file

For dipeptide frequency statistics click here
See this proteome in: uniprot_link
Proteome-pI is available under Creative Commons Attribution-NoDerivs license, for more details see here

Reference: Kozlowski LP. Proteome-pI 2.0: Proteome Isoelectric Point Database Update. Nucleic Acids Res. 2021, doi: 10.1093/nar/gkab944 Contact: Lukasz P. Kozlowski