Descriptions

HSPA8 (or hsc70) is a heat shock cognate protein involved in many cellular processes. During recovery from stress, HSPA8, initially accumulating in the nucleoplasm for folding/refolding of proteins, transiently concentrates in nucleoli for nucleolar morphology and function restoration. The inhibitory region is positioned at one of the three domains of HSPA8 protein, which is the N-terminal ATPase domain, specifically in residues 263-287 of domain IIB. Under normal growth conditions, the constitutive nucleolar targeting function that is provided by residues 225-262 is diminished by the autoinhibitory element located in residues 263-287. When cells recover from stress, the autoinhibitory element is inactivated, and the constitutive nucleolar targeting function restores.

Autoinhibitory domains (AIDs)

Target domain

2-138 (N-terminal DNA-binding domain);459-491 (Signal response domain)

Relief mechanism

PTM

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q90643

Entry ID Method Resolution Chain Position Source
AF-Q90643-F1 Predicted AlphaFoldDB

No variants for Q90643

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q90643

No associated diseases with Q90643

3 regional properties for Q90643

Type Name Position InterPro Accession
conserved_site Heat shock protein 70, conserved site 6 - 13 IPR018181-1
conserved_site Heat shock protein 70, conserved site 194 - 207 IPR018181-2
conserved_site Heat shock protein 70, conserved site 332 - 346 IPR018181-3

Functions

Description
EC Number
Subcellular Localization
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

2 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
nucleus A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.

2 GO annotations of molecular function

Name Definition
DNA-binding transcription factor activity, RNA polymerase II-specific A DNA-binding transcription factor activity that modulates the transcription of specific gene sets transcribed by RNA polymerase II.
RNA polymerase II cis-regulatory region sequence-specific DNA binding Binding to a specific upstream regulatory DNA sequence (transcription factor recognition sequence or binding site) located in cis relative to the transcription start site (i.e., on the same strand of DNA) of a gene transcribed by RNA polymerase II.

7 GO annotations of biological process

Name Definition
defense response to virus Reactions triggered in response to the presence of a virus that act to protect the cell or organism.
immune system process Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
positive regulation of DNA-templated transcription Any process that activates or increases the frequency, rate or extent of cellular DNA-templated transcription.
positive regulation of type I interferon production Any process that activates or increases the frequency, rate, or extent of type I interferon production. Type I interferons include the interferon-alpha, beta, delta, episilon, zeta, kappa, tau, and omega gene families.
regulation of transcription by RNA polymerase II Any process that modulates the frequency, rate or extent of transcription mediated by RNA polymerase II.
toll-like receptor signaling pathway The series of molecular signals initiated by a ligand binding to a toll-like receptor of a target cell. Toll-like receptors directly bind pattern motifs from a variety of microbial sources to initiate an innate immune response.
TRIF-dependent toll-like receptor signaling pathway The series of molecular signals initiated by a ligand binding to a toll-like receptor where the TRIF adaptor mediates transduction of the signal. Toll-like receptors directly bind pattern motifs from a variety of microbial sources to initiate an innate immune response.

4 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q90871 IRF8 Interferon regulatory factor 8 Gallus gallus (Chicken) PR
Q98925 IRF2 Interferon regulatory factor 2 Gallus gallus (Chicken) PR
Q92985 IRF7 Interferon regulatory factor 7 Homo sapiens (Human) EV
P70434 Irf7 Interferon regulatory factor 7 Mus musculus (Mouse) SS
10 20 30 40 50 60
MPAIGIDLGT TYSCVGVYQH GKVEIIANDQ GNRTTPSYVA FTDSERLIGD PAKNQVAMNP
70 80 90 100 110 120
RNTVFDAKRL IGRKYDDPKI AEDMKHWPFK VVSDGGKPKI GVEYKGESKR FAPEEISSMV
130 140 150 160 170 180
LTKMKETAEA YLGESITDAV ITVPAYFNDS QRQATKDAGH IAGLNVLRII NEPTAAALAY
190 200 210 220 230 240
GLDKNLKGER NVLIFDLGGG TFDVSILTID EGSLFEVRST AGDTHLGGED FDNRLVTHLA
250 260 270 280 290 300
DEFKRKYKKD LRSNPRALRR LRTAAERAKR TLSSSTEATI EIDALFEGQD FYTKVSRARF
310 320 330 340 350 360
EELCADLFRN TLQPVEKALN DAKMDKGQIH DIVLVGGSTR IPKVQSLLQD FFHGKNLNLS
370 380 390 400 410 420
INPDEAVAYG AAVQAAILSG DQSGKIQDVL LVDVAPLSLG IETAGGVMTK LIERNCRIPC
430 440 450 460 470 480
KQTKTFSTYA DNQPGVSIQV YEGERAMTKD NNALGTFDLS GIPPAPRGVP QIEVTFDLDA
490 500 510 520 530 540
NGILNVSAKE MSTGKAKNIT IKNDKGRLSQ AEIDRMVNEA EKYADEDEKH RQRITSRNAL
550 560 570 580 590 600
ESYVFNVKQA VEQAPAGKLD EADKNSVLDK CNDTIRWLDS NTTAEKEEFD HKLEELTRHC
610 620 630 640
SPIMTKMHQQ GAGAGAGGPG ANCGQQAGGF GGYSGPTVEE VD