Reviewed, UniProtKB/Swiss-Prot Q3ZN06 (NS1AB_HASV4)

Names and origin

Protein names

Recommended name:
    Non-structural polyprotein 1AB
Cleaved into the following 5 chains:
    1- Recommended name:
            Protein p19
    2- Recommended name:
            Transmembrane protein 1A
    3- Recommended name:
            Serine protease p27
                Short name=p27
              EC=3.4.21.-
    4- Recommended name:
            Protein p20
    5- Recommended name:
            RNA-directed RNA polymerase p57
                Short name=p57
              EC=2.7.7.48

Gene names

Name:

ORF1

Organism

Human astrovirus-4 (HAstV-4)

Taxonomic identifier

35300 [NCBI]

Taxonomic lineage

Viruses › ssRNA positive-strand viruses, no DNA stage › Astroviridae › Mamastrovirus

Virus host

Homo sapiens (Human) [TaxID: 9606]

Protein attributes

Sequence length	1415 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Non-structural polyprotein 1AB contains the viral protease participating in the cleavage of the polyprotein into functional products. It contains also the activities necessary for replication of genomic RNA, as well as transcription of subgenomic mRNA By similarity.
Catalytic activity	Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).
Subcellular location	Membrane; Multi-pass membrane proteinPotential.
Post-translational modification	Cleaved presumably by viral and host proteases By similarity.
Sequence similarities	Belongs to the astroviridae polyprotein 1AB family. Contains 1 RdRp catalytic domain.

Ontologies

Keywords
Biological process	RNA replication
Cellular component	Membrane
Coding sequence diversity	Ribosomal frameshifting
Domain	Coiled coil Transmembrane
Ligand	ATP-binding Nucleotide-binding
Molecular function	Hydrolase Nucleotidyltransferase Protease RNA-directed RNA polymerase Thiol protease Transferase
Gene Ontology (GO)
Biological process	transcription, RNA-dependent Inferred from electronic annotation. Source: UniProtKB-KW viral genome replication Inferred from electronic annotation. Source: InterPro
Cellular component	integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	ATP binding Inferred from electronic annotation. Source: UniProtKB-KW RNA binding Inferred from electronic annotation. Source: InterPro RNA-directed RNA polymerase activity Inferred from electronic annotation. Source: InterPro cysteine-type peptidase activity Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Alternative products

This entry describes 2 isoforms produced by ribosomal frameshifting. [Align] [Select]

Isoform nsp1ab (identifier: Q3ZN06-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

Notes: Generated by a ribosomal frameshift at position 900.

Isoform nsp1a (identifier: Q3ZN07-1)

The sequence of this isoform can be found in the external entry Q3ZN07-1.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 1415	1415	Non-structural polyprotein 1AB		PRO_0000327277
	Chain	1 – 175	175	Protein p19 Potential		PRO_0000327278
	Chain	176 – 419	244	Transmembrane protein 1A Potential		PRO_0000327279
	Chain	420 – 664	245	Serine protease p27 Potential		PRO_0000327280
	Chain	665 – 912	248	Protein p20 Potential		PRO_0000327281
	Chain	913 – 1415	503	RNA-directed RNA polymerase p57 Potential		PRO_0000327282
Regions
	Transmembrane	154 – 174	21	Potential
	Transmembrane	239 – 259	21	Potential
	Transmembrane	286 – 306	21	Potential
	Transmembrane	313 – 333	21	Potential
	Transmembrane	344 – 364	21	Potential
	Domain	1160 – 1286	127	RdRp catalytic
	Coiled coil	104 – 142	39	Potential
	Coiled coil	587 – 616	30	Potential
Sites
	Active site	461	1	Charge relay system; for serine protease activity By similarity
	Active site	489	1	Charge relay system; for serine protease activity By similarity
	Active site	551	1	Charge relay system; for serine protease activity By similarity
	Site	175 – 176	2	Cleavage Potential
	Site	419 – 420	2	Cleavage Potential
	Site	664 – 665	2	Cleavage Potential
	Site	912 – 913	2	Cleavage Potential

Sequences

	Sequence		Length	Mass (Da)
	Isoform nsp1ab [UniParc]. Last modified April 8, 2008. Version 2. Checksum: 64A20504EF1736A5	FASTA	1,415	161,278
	10 20 30 40 50 60 MAHGEPYYSS KPDKDFNFGS TMARRQMTPT MVAKLPNFVR NSPQAYDWIV RGLIFPTTGK 70 80 90 100 110 120 TYFQRVVVIT GGLEDGTYGS FVFDGREWVE IYPIEHLNLM SSLKLIHKAN ALQERLRLSQ 130 140 150 160 170 180 EEKATLALDV QFLQHENVRL KELIPKPEPR KIQMKWIIVG AVLTFLSLIP GGYAQSQINN 190 200 210 220 230 240 TIFTDMIAAC KYSTETLTEN LDLRIKLALA NITISDKLDA VRQILNFAFV PRAHWLRTVF 250 260 270 280 290 300 YYIHYYEMWN IFMFVLAIGT VMRSARPGTD LITLATSHLS GFRMAVLPTI PFHTTMTLWV 310 320 330 340 350 360 MNTLMVCYYF DNLLAITLAI LAPILGIIFL CFMEDSNYVS QIRGLIATAV LIAGGHACLT 370 380 390 400 410 420 LTGTTTSLFV VILTCRFIRM ATVFIGTRFE IRDANGKVVA TVPTRIKNVA FDFFQKLKQS 430 440 450 460 470 480 GVRVGVNEFV VIKPGALCVI DTPEGKGTGF FSGNDIVTAA HAVGNNTFVN VCYEGLMYEA 490 500 510 520 530 540 KVRYMPEKDI AFITCPGDLH PTARLKLSKN PDYSCVTVMA YVNEDLVVST AAAMVHGNTL 550 560 570 580 590 600 SYAVRTQDGM SGAPVCDKYG RVLAVHQTNT GYTGGAVIID PTDFHPVKAP SRVELLKEEI 610 620 630 640 650 660 ERLKAQLNSA AENPATAVTQ QPVVTLEQKS VSDSDVVDLV RTAMEREMKV LRDEINGILA 670 680 690 700 710 720 PFLQKKKGKT KHGRGRVRRN LRKGVKLLTE EEYRELLEKG LDRETFLDLI DRIIGERSGY 730 740 750 760 770 780 PDYDDEDYYD EDDDGWGVVG DDVEFDYTEV INFDQAKPTP APRTVKPKTC PEPEAETQPL 790 800 810 820 830 840 DLSQKKEKQL EHEQQVVKST KPQKNEPQPY SQTYGKAPIW ESYDFDWDED DAKFILPAPH 850 860 870 880 890 900 RLTKADEIVL GSKIVKLRTI IETAIKTQNY SALPEAVFEL DKAAYEAGLE GFLQRVKSKK 910 920 930 940 950 960 GSKKLQRAPE DQGAQNYHSL DAWKSLLEPP RERRCVPANF PLLGHLPINR PIFDDKKPRD 970 980 990 1000 1010 1020 DLLGLLPEPT WHAFEEYGPT TWGPQAFIKS FDKFFYAEPI DFFSEYPQLC AFADWATYRE 1030 1040 1050 1060 1070 1080 FRYLEDTRVI HITATEKNTD STPAYPKMNY FDTEENYLEA HGWAPYIREF TRVFKGDKPE 1090 1100 1110 1120 1130 1140 VLWYLFLKKE IIKEEKIRNS DIRQIVCADP IYTRIGACLE AHQNALMKQH TDTSVGQCGW 1150 1160 1170 1180 1190 1200 SPMEGGFKKT MQRLVNKGNK HFIEFDWTRY DGTIPPALFK HIKEIRWNFI NKDQREKYKH 1210 1220 1230 1240 1250 1260 VHEWYVDNLL NRHVLLPSGE VTLQTRGNPS GQFSTTMDNN MVNFWSQAFE FAYFNGPDKD 1270 1280 1290 1300 1310 1320 LWKTYDTVVY GDDRLSTTPS VPDDYEERVI NMYRDIFGMW VKPGKVICRD SIVGLSFCGF 1330 1340 1350 1360 1370 1380 TVNENLEPVP TSPEKLMASL LKPYKILPDL ESLHGKLLCY QLLAAFMAED HPFKVYVEHC 1390 1400 1410 LSRTAKQLRD SGLPARLTEE QLHRIWRGGP KKCDG
	Isoform nsp1a. See Q3ZN07.		–	–

References

[1]	"Molecular characterization of human astrovirus type 4." Barthel J., Rethwilm A., Rohayem J. Submitted (AUG-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA]. Strain: Isolate Dresden.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AY720891 Genomic RNA. Translation: AAW51878.1. Sequence problems.
3D structure databases
ModBase	Search...
Family and domain databases
InterPro	IPR001205. RNA_pol_P3D. IPR007094. RNA_pol_PSvir. [Graphical view]
Pfam	PF00680. RdRP_1. 1 hit. [Graphical view]
PROSITE	PS50507. RDRP_SSRNA_POS. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

NS1AB_HASV4

Accession

Primary (citable) accession number: Q3ZN06

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 8, 2008
Last sequence update:	April 8, 2008
Last modified:	November 25, 2008
This is version 20 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

Virus (Virus annotation project)

Relevant documents

SIMILARITY comments

Index of protein domains and families