NESdb

Summary for NS2 (IDV) (NES ID: 398)

Full Name

NS2 protein UniProt

Alternative Names

None

Organism

Influenza D virus (D/bovine/Shandong/Y217/2014)

Experimental Evidence for CRM1-mediated Export

LMB Sensitive, Binds CRM1 ^{Ref.1Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus, Zhao et al., Viruses, 2020}

Mutations That Affect Nuclear Export

*highlighted yellow in the full sequence

L70A, L73A, I75A, L98A, L101A/L105A/M107A, L105A/M107A, I140A, V137A ^{Ref.1Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus, Zhao et al., Viruses, 2020}

Mutations That Affect CRM1 Binding

*shown as red residues in the full sequence

¹³⁶LVSLIRLKSKL¹⁴⁶ by Deletion ^{Ref.1Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus, Zhao et al., Viruses, 2020}

Functional Export Signals

*shown as underlined residues in the full sequence

⁶⁶LRNQLTALRI⁷⁵, ⁹⁷LLLPLMRNLEM¹⁰⁷, ¹³⁶LVSLIRLKSKL¹⁴⁶ ^{Ref.1Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus, Zhao et al., Viruses, 2020}

Secondary Structure of Export Signal

Unknown

Other Residues Important for Export

Unknown

Sequence

Show FASTA Format

>tr|A0A088CK81|A0A088CK81_9ORTO NS2 protein OS=Influenza D virus (D/bovine/Shandong/Y217/2014) OX=1510943 GN=NS2 PE=4 SV=1
MSENKSVNTTNIKAAISELALGAASWMDSSGLMAFEKMRKSAENSLRVEQVYEPRTWEDA
VAEETLRNQLTALRISVEEMTQRSQYERYSEFGEVDLLLPLMRNLEMRSDDTNLDVKQIP
SGEEKAQLLERFRSCLVSLIRLKSKLGVAMVNSLTNKDMRAALDETKSVSRTISMLKECI
RSLV

Show Domain Info by CDD

Show Secondary Structure by PSIPRED

    	# PSIPRED HFORMAT (PSIPRED V3.2)

Conf: 998765540308999999985000122202468899866654421101013578717787
Pred: CCCCCCCCCHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHH
  AA: MSENKSVNTTNIKAAISELALGAASWMDSSGLMAFEKMRKSAENSLRVEQVYEPRTWEDA
              10        20        30        40        50        60


Conf: 678898633222113322231243443310001233001234564422246666867777
Pred: HHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
  AA: VAEETLRNQLTALRISVEEMTQRSQYERYSEFGEVDLLLPLMRNLEMRSDDTNLDVKQIP
              70        80        90       100       110       120


Conf: 346889999999989889998542001346522660235675301034676899999998
Pred: CHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHCCHHHHHHHHHHHHHHH
  AA: SGEEKAQLLERFRSCLVSLIRLKSKLGVAMVNSLTNKDMRAALDETKSVSRTISMLKECI
             130       140       150       160       170       180


Conf: 6219
Pred: HHCC
  AA: RSLV

Show Conservation Score by AL2CO

1     M       1.635
2     S       1.635
3     E       1.635
4     N      -0.339
5     K       1.635
6     S      -0.339
7     V       1.635
8     N      -0.339
9     T      -0.339
10    T       1.635
11    N       1.635
12    I      -0.339
13    K      -0.339
14    A       1.635
15    A      -0.339
16    I      -0.339
17    S      -0.339
18    E      -0.339
19    L      -0.339
20    A      -0.339
21    L       1.635
22    G      -0.339
23    A      -0.339
24    A      -0.339
25    S      -0.339
26    W      -0.339
27    M      -0.339
28    D       1.635
29    S      -0.339
30    S      -0.339
31    G      -0.339
32    L      -0.339
33    M       1.635
34    A      -0.339
35    F      -0.339
36    E       1.635
37    K       1.635
38    M       1.635
39    R      -0.339
40    K      -0.339
41    S       1.635
42    A      -0.339
43    E      -0.339
44    N      -0.339
45    S      -0.339
46    L       1.635
47    R       1.635
48    V      -0.339
49    E       1.635
50    Q      -0.339
51    V      -0.339
52    Y      -0.339
53    E      -0.339
54    P       1.635
55    R       1.635
56    T       1.635
57    W       1.635
58    E       1.635
59    D       1.635
60    A       1.635
61    V      -0.339
62    A      -0.339
63    E      -0.339
64    E       1.635
65    T      -0.259
66    L       1.635
67    R      -0.262
68    N      -1.540
69    Q      -1.540
70    L      -1.540
71    T      -0.339
72    A      -0.339
73    L      -0.339
74    R      -0.339
75    I      -1.540
76    S      -1.540
77    V      -1.540
78    E      -0.339
79    E      -0.262
80    M      -0.259
81    T      -1.540
82    Q       1.635
83    R      -1.000    *
84    S      -1.000    *
85    Q      -0.368
86    Y      -0.368
87    E       1.635
88    R      -0.368
89    Y      -0.368
90    S      -0.262
91    E      -0.339
92    F      -1.540
93    G      -0.339
94    E      -0.259
95    V      -0.368
96    D      -0.262
97    L      -1.540
98    L      -0.262
99    L      -1.540
100   P      -0.339
101   L      -0.339
102   M      -0.262
103   R      -1.540
104   N      -0.339
105   L       1.635
106   E      -0.259
107   M      -1.540
108   R      -1.540
109   S      -0.262
110   D      -1.540
111   D      -0.339
112   T      -0.339
113   N      -0.262
114   L      -1.540
115   D      -0.259
116   V      -0.259
117   K      -0.339
118   Q      -1.540
119   I       1.635
120   P      -0.262
121   S      -1.540
122   G       1.635
123   E       1.635
124   E      -1.540
125   K      -0.262
126   A      -1.540
127   Q      -0.262
128   L      -0.368
129   L       1.635
130   E      -0.368
131   R      -0.262
132   F      -1.540
133   R      -0.339
134   S      -1.540
135   C      -0.339
136   L      -0.368
137   V      -0.368
138   S      -0.368
139   L       1.635
140   I      -0.368
141   R      -0.368
142   L       1.635
143   K      -0.368
144   S      -0.368
145   K      -0.368
146   L       1.635
147   G      -0.368
148   V      -0.368
149   A       1.635
150   M      -0.368
151   V      -0.368
152   N      -0.368
153   S      -0.368
154   L      -0.368
155   T      -0.368
156   N      -0.368
157   K      -0.368
158   D       1.635
159   M      -0.368
160   R      -0.368
161   A      -0.368
162   A      -0.368
163   L      -0.368
164   D      -0.368
165   E      -0.368
166   T      -0.368
167   K      -0.368
168   S      -0.368
169   V      -0.368
170   S      -0.368
171   R      -0.368
172   T      -0.368
173   I       1.635
174   S      -0.368
175   M       1.635
176   L      -0.368
177   K       1.635
178   E      -0.368
179   C      -0.368
180   I      -0.368
181   R      -0.368
182   S       1.635
183   L       1.635
184   V      -0.368
* gap fraction no less than  0.50; conservation set to M-S
  M: mean;  S: standard deviation

al2co - The parameters are:

Input alignment file - 398.paln
Output conservation - STDOUT
Weighting scheme - independent-count based
Conservation calculation method - entropy-based
Window size - 1
Conservation normalized to zero mean and unity variance
Gap fraction to suppress calculation -  0.50

        10         20         30         40         50         60 
MSENKSVNTT NIKAAISELA LGAASWMDSS GLMAFEKMRK SAENSLRVEQ VYEPRTWEDA 
        70         80         90        100        110        120 
VAEETLRNQL TALRISVEEM TQRSQYERYS EFGEVDLLLP LMRNLEMRSD DTNLDVKQIP 
       130        140        150        160        170        180 
SGEEKAQLLE RFRSCLVSLI RLKSKLGVAM VNSLTNKDMR AALDETKSVS RTISMLKECI 
                                                                  RSLV

3D Structures in PDB

Not Available

Comments

Influenza type-D virus (IDV) NS2 is designated as NS2 due to similarity to Influenza A virus (IAV) NEP protein (entry 256) which is implicated in nuclear export of vRNPs. Zhao et al. reported that IDV NS2 accumulate in the cytosol and that it cannot functionally replace IAV virus NS2 in the H1N1 backbone. Through truncation analysis, three peptides were identified as minimal fragment sufficient for directing GFP-fusion nuclear export in an LMB-sensitive manner. Full-length protein also appears to be LMB-sensitive. Mutations that affect export activity was performed in the fragments and not full-length protein. GFP-NES fragments and full-length protein can pull-down CRM1 protein and co-localize in cells. NS2 with alanine mutations to individual NESs and deletion of NES1 and NES2 still retained CRM1 binding activity, and deletion of NES3 is necessary to abolish CRM1 binding. ^{Ref.1Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus, Zhao et al., Viruses, 2020}

References

[1]. "Features of Nuclear Export Signals of NS2 Protein of Influenza D Virus"
Zhao L, Xia H, Huang J, Zheng Y, Liu C, Su J, Ping J. (2020) Viruses, 12(10):E1100 PubMed

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