putative uncharacterized protein [SARS coronavirus]
Source Data: (From: http://us.expasy.org)
Physical Attributes:
Number of amino acids: 274
Molecular weight: 30902.7
Theoretical pI: 5.75
Amino acid composition:
Ala (A) 20 7.3%
Arg (R) 5 1.8%
Asn (N) 12 4.4%
Asp (D) 14 5.1%
Cys (C) 8 2.9%
Gln (Q) 11 4.0%
Glu (E) 8 2.9%
Gly (G) 14 5.1%
His (H) 7 2.6%
Ile (I) 22 8.0%
Leu (L) 27 9.9%
Lys (K) 12 4.4%
Met (M) 5 1.8%
Phe (F) 16 5.8%
Pro (P) 13 4.7%
Ser (S) 15 5.5%
Thr (T) 23 8.4%
Trp (W) 5 1.8%
Tyr (Y) 17 6.2%
Val (V) 20 7.3%
Asx (B) 0 0.0%
Glx (Z) 0 0.0%
Xaa (X) 0 0.0%
Total number of negatively charged residues (Asp + Glu): 22
Total number of positively charged residues (Arg + Lys): 17
Atomic composition:
Carbon C 1428
Hydrogen H 2161
Nitrogen N 343
Oxygen O 397
Sulfur S 13
Formula: C1428H2161N343O397S13
Total number of atoms: 4342
Extinction coefficients:
Conditions: 6.0 M guanidium hydrochloride
0.02 M phosphate buffer
pH 6.5
Extinction coefficients are in units of M-1 cm-1 .
The first table lists values computed assuming ALL Cys
residues appear as half cystines, whereas the second table
assumes that NONE do.
276 278 279 280 282
nm nm nm nm nm
Ext. coefficient 52230 52308 51645 50690 48880
Abs 0.1% (=1 g/l) 1.690 1.693 1.671 1.640 1.582
276 278 279 280 282
nm nm nm nm nm
Ext. coefficient 51650 51800 51165 50210 48400
Abs 0.1% (=1 g/l) 1.671 1.676 1.656 1.625 1.566
Estimated half-life:
The N-terminal of the sequence considered is M (Met).
The estimated half-life is: 30 hours (mammalian reticulocytes, in vitro).
>20 hours (yeast, in vivo).
>10 hours (Escherichia coli, in vivo).
Instability index:
The instability index (II) is computed to be 37.04
This classifies the protein as stable.
Aliphatic index: 98.21
Grand average of hydropathicity (GRAVY): 0.239
Protein Sequence Feature:
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