UniProtKB - A0A0X9JHC1 (A0A0X9JHC1_9INFA)
Protein
Matrix protein 1
Gene
M1
Organism
Influenza A virus (A/chicken/China/028/2014(H7N9))
Status
Functioni
Determines the virion's shape: spherical or filamentous. Clinical isolates of influenza are characterized by the presence of significant proportion of filamentous virions, whereas after multiple passage on eggs or cell culture, virions have only spherical morphology. Filamentous virions are thought to be important to infect neighboring cells, and spherical virions more suited to spread through aerosol between hosts organisms.UniRule annotation
Plays critical roles in virus replication, from virus entry and uncoating to assembly and budding of the virus particle. M1 binding to ribonucleocapsids (RNPs) in nucleus seems to inhibit viral transcription. Interaction of viral NEP with M1-RNP is thought to promote nuclear export of the complex, which is targeted to the virion assembly site at the apical plasma membrane in polarized epithelial cells. Interactions with NA and HA may bring M1, a non-raft-associated protein, into lipid rafts. Forms a continuous shell on the inner side of the lipid bilayer in virion, where it binds the RNP. During virus entry into cell, the M2 ion channel acidifies the internal virion core, inducing M1 dissociation from the RNP. M1-free RNPs are transported to the nucleus, where viral transcription and replication can take place.UniRule annotation
Miscellaneous
Most abundant protein in virion. When expressed alone can form virus-like particles in transfected cells.UniRule annotation
GO - Molecular functioni
- RNA binding Source: UniProtKB-UniRule
- structural constituent of virion Source: UniProtKB-UniRule
GO - Biological processi
- viral budding from plasma membrane Source: UniProtKB-UniRule
Keywordsi
Molecular function | RNA-bindingUniRule annotationARBA annotation |
Names & Taxonomyi
Protein namesi | Recommended name: Matrix protein 1UniRule annotationShort name: M1UniRule annotation |
Gene namesi | Name:M1Imported Synonyms:MUniRule annotation |
Organismi | Influenza A virus (A/chicken/China/028/2014(H7N9))Imported |
Taxonomic identifieri | 1774282 [NCBI] |
Taxonomic lineagei | Viruses › Riboviria › Orthornavirae › Negarnaviricota › Polyploviricotina › Insthoviricetes › Articulavirales › Orthomyxoviridae › Alphainfluenzavirus › |
Proteomesi |
|
Subcellular locationi
- Virion membrane UniRule annotation; Peripheral membrane protein UniRule annotation; Cytoplasmic side UniRule annotation
- Host nucleus UniRule annotation
GO - Cellular componenti
- host cell nucleus Source: UniProtKB-SubCell
- virion membrane Source: UniProtKB-SubCell
Keywords - Cellular componenti
Host nucleusUniRule annotationARBA annotation, MembraneUniRule annotationARBA annotation, Viral matrix proteinUniRule annotationARBA annotation, VirionInteractioni
Subunit structurei
Homodimer and homomultimer.
Interacts with NEP. Binds ribonucleocapsid by both interacting with genomic RNA and NP protein. May interact with HA and NA. Cannot bind NP without genomic RNA.
UniRule annotationFamily & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 158 – 252 | Flu_M1_CInterPro annotationAdd BLAST | 95 |
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 1 – 164 | Membrane-bindingUniRule annotationAdd BLAST | 164 | |
Regioni | 165 – 252 | RNP-bindingUniRule annotationAdd BLAST | 88 |
Motif
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Motifi | 101 – 105 | Nuclear localization signalUniRule annotation | 5 |
Sequence similaritiesi
Belongs to the influenza viruses Matrix protein M1 family.UniRule annotation
Family and domain databases
Gene3Di | 1.10.10.180, 1 hit 1.20.91.10, 1 hit |
HAMAPi | MF_04068, INFV_M1, 1 hit |
InterProi | View protein in InterPro IPR036039, Flu_matrix_M1 IPR013188, Flu_matrix_M1_C IPR001561, Flu_matrix_M1_N IPR015423, Flu_matrix_M1_N_sub1 IPR015799, Flu_matrix_M1_N_sub2 IPR037533, INFV_M1 |
Pfami | View protein in Pfam PF00598, Flu_M1, 1 hit PF08289, Flu_M1_C, 1 hit |
SMARTi | View protein in SMART SM00759, Flu_M1_C, 1 hit |
SUPFAMi | SSF48145, SSF48145, 1 hit |
i Sequence
Sequence statusi: Complete.
A0A0X9JHC1-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MSLLTEVETY VLSIIPSGPL KAEIAQRLED VFAGKNADLE ALMEWIKTRP
60 70 80 90 100
ILSPLTKGIL GFVFTLTVPS ERGLQRRRFV QNALNGNGDP NNMDKAVKLY
110 120 130 140 150
KKLKREMTFH GAKEVALSYS TGALASCMGL IYNRMGTVTA EGALGLVCAT
160 170 180 190 200
CEQIADAQHR SHRQMATTTN PLIRHENRMV LASTTAKAME QMAGSSEQAA
210 220 230 240 250
EAMEVASQAR QMVQAMRTVG THPNSSTGLK DDLIENLQAY QNRMGVQLQR
FK
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | KU318992 Viral cRNA Translation: ALX27980.1 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | KU318992 Viral cRNA Translation: ALX27980.1 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
5WWI | X-ray | 3.19 | E | 99-109 | [»] | |
5WWJ | X-ray | 2.29 | E/F | 99-109 | [»] | |
5WWU | X-ray | 2.79 | E | 99-109 | [»] | |
5WXC | X-ray | 2.29 | E/F | 99-109 | [»] | |
5WXD | X-ray | 3.29 | E | 99-109 | [»] | |
SMRi | A0A0X9JHC1 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Family and domain databases
Gene3Di | 1.10.10.180, 1 hit 1.20.91.10, 1 hit |
HAMAPi | MF_04068, INFV_M1, 1 hit |
InterProi | View protein in InterPro IPR036039, Flu_matrix_M1 IPR013188, Flu_matrix_M1_C IPR001561, Flu_matrix_M1_N IPR015423, Flu_matrix_M1_N_sub1 IPR015799, Flu_matrix_M1_N_sub2 IPR037533, INFV_M1 |
Pfami | View protein in Pfam PF00598, Flu_M1, 1 hit PF08289, Flu_M1_C, 1 hit |
SMARTi | View protein in SMART SM00759, Flu_M1_C, 1 hit |
SUPFAMi | SSF48145, SSF48145, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | A0A0X9JHC1_9INFA | |
Accessioni | A0A0X9JHC1Primary (citable) accession number: A0A0X9JHC1 | |
Entry historyi | Integrated into UniProtKB/TrEMBL: | April 13, 2016 |
Last sequence update: | April 13, 2016 | |
Last modified: | October 7, 2020 | |
This is version 33 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Unreviewed (UniProtKB/TrEMBL) |