Descriptions

The eukaryote-specific J-protein Zuo1 is an Hsp70 co-chaperone that is primarily associated with ribosomes and widely accepted to play an important role in the folding of nascent polypeptides. However, evidence from several organisms indicates that Zuo1 also has a direct role in transcriptional regulation. Zuo1 activates directly the zinc cluster transcription factor Pdr1 via a four-helix bundle formed by the C-terminal domain (CTD), which is 86 residues of Zuo1 (348-433) in Saccharomyces cerevisiae. Among these, the first helix (348-364) plays a role as an autoinhibitory domain on the remaining helixes (365-433) and prevents activation of Pdr1. Both truncation of the helix I and unfolding of the CTD by variants (Zou1-L411R or Zuo1-K351/355P) lead to the release of autoinhibition resulting in the high activation of the Pdr1.

Autoinhibitory domains (AIDs)

Target domain

365-433 (C-terminal domain helices)

Relief mechanism

Others

Assay

Deletion assay, Mutagenesis experiment, Structural analysis

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

5 structures for P32527

Entry ID Method Resolution Chain Position Source
2LWX NMR - A 348-433 PDB
5DJE X-ray 185 A A/B 166-303 PDB
7X34 EM 310 A C 334-433 PDB
7X3K EM 600 A A 1-433 PDB
AF-P32527-F1 Predicted AlphaFoldDB

4 variants for P32527

Variant ID(s) Position Change Description Diseaes Association Provenance
s07-1063144 6 T>A No SGRP
s07-1063093 23 P>A No SGRP
s07-1062054 369 G>D No SGRP
s07-1062037 375 T>A No SGRP

No associated diseases with P32527

16 regional properties for P32527

Type Name Position InterPro Accession
domain C2 domain 1571 - 1687 IPR000008
domain Dbl homology (DH) domain 1229 - 1415 IPR000219
domain EH domain 14 - 109 IPR000261-1
domain EH domain 214 - 310 IPR000261-2
conserved_site Guanine-nucleotide dissociation stimulator, CDC24, conserved site 1363 - 1388 IPR001331
domain SH3 domain 737 - 798 IPR001452-1
domain SH3 domain 905 - 963 IPR001452-2
domain SH3 domain 994 - 1052 IPR001452-3
domain SH3 domain 1066 - 1130 IPR001452-4
domain SH3 domain 1147 - 1206 IPR001452-5
domain Pleckstrin homology domain 1432 - 1585 IPR001849
domain EF-hand domain 53 - 88 IPR002048-1
domain EF-hand domain 254 - 289 IPR002048-2
binding_site EF-Hand 1, calcium-binding site 66 - 78 IPR018247-1
binding_site EF-Hand 1, calcium-binding site 267 - 279 IPR018247-2
domain Intersectin-1, AP2 binding region 795 - 909 IPR032140

Functions

Description
EC Number
Subcellular Localization
  • Cytoplasm
PANTHER Family PTHR43999 DNAJ HOMOLOG SUBFAMILY C MEMBER 2
PANTHER Subfamily PTHR43999:SF1 DNAJ HOMOLOG SUBFAMILY C MEMBER 2
PANTHER Protein Class chaperone
PANTHER Pathway Category No pathway information available

6 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
mitochondrion A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
nucleolus A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome.
polysome A multiribosomal structure representing a linear array of ribosomes held together by messenger RNA. They represent the active complexes in cellular protein synthesis and are able to incorporate amino acids into polypeptides both in vivo and in vitro.
ribosome An intracellular organelle, about 200 A in diameter, consisting of RNA and protein. It is the site of protein biosynthesis resulting from translation of messenger RNA (mRNA). It consists of two subunits, one large and one small, each containing only protein and RNA. Both the ribosome and its subunits are characterized by their sedimentation coefficients, expressed in Svedberg units (symbol: S). Hence, the prokaryotic ribosome (70S) comprises a large (50S) subunit and a small (30S) subunit, while the eukaryotic ribosome (80S) comprises a large (60S) subunit and a small (40S) subunit. Two sites on the ribosomal large subunit are involved in translation, namely the aminoacyl site (A site) and peptidyl site (P site). Ribosomes from prokaryotes, eukaryotes, mitochondria, and chloroplasts have characteristically distinct ribosomal proteins.

3 GO annotations of molecular function

Name Definition
DNA binding Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
Hsp70 protein binding Binding to a Hsp70 protein, heat shock proteins around 70kDa in size.
ribosome binding Binding to a ribosome.

8 GO annotations of biological process

Name Definition
'de novo' cotranslational protein folding The process of assisting in the correct noncovalent assembly of the ribosome-bound nascent chains of a multidomain protein whilst other parts of the protein are still being translated.
cellular response to cycloheximide Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cycloheximide stimulus. Cycloheximide (actidione) is an antibiotic produced by some Streptomyces species which interferes with protein synthesis in eukaryotes.
negative regulation of cell death Any process that decreases the rate or frequency of cell death. Cell death is the specific activation or halting of processes within a cell so that its vital functions markedly cease, rather than simply deteriorating gradually over time, which culminates in cell death.
positive regulation of transcription from RNA polymerase II promoter in response to stress Any process that increases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
regulation of translational fidelity Any process that modulates the ability of the translational apparatus to interpret the genetic code.
ribosomal subunit export from nucleus The directed movement of a ribosomal subunit from the nucleus into the cytoplasm.
rRNA processing Any process involved in the conversion of a primary ribosomal RNA (rRNA) transcript into one or more mature rRNA molecules.
translational frameshifting A mechanism whereby different proteins may result from a single mRNA molecule, due to a change in the parsing of three nucleotides per codon relative to an initiating AUG codon.

4 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q99543 DNAJC2 DnaJ homolog subfamily C member 2 Homo sapiens (Human) PR
P54103 Dnajc2 DnaJ homolog subfamily C member 2 Mus musculus (Mouse) PR
Q7TQ20 Dnajc2 DnaJ homolog subfamily C member 2 Rattus norvegicus (Rat) PR
Q6NWJ4 dnajc2 DnaJ homolog subfamily C member 2 Danio rerio (Zebrafish) (Brachydanio rerio) PR
10 20 30 40 50 60
MFSLPTLTSD ITVEVNSSAT KTPFVRRPVE PVGKFFLQHA QRTLRNHTWS EFERIEAEKN
70 80 90 100 110 120
VKTVDESNVD PDELLFDTEL ADEDLLTHDA RDWKTADLYA AMGLSKLRFR ATESQIIKAH
130 140 150 160 170 180
RKQVVKYHPD KQSAAGGSLD QDGFFKIIQK AFETLTDSNK RAQYDSCDFV ADVPPPKKGT
190 200 210 220 230 240
DYDFYEAWGP VFEAEARFSK KTPIPSLGNK DSSKKEVEQF YAFWHRFDSW RTFEFLDEDV
250 260 270 280 290 300
PDDSSNRDHK RYIERKNKAA RDKKKTADNA RLVKLVERAV SEDPRIKMFK EEEKKEKERR
310 320 330 340 350 360
KWEREAGARA EAEAKAKAEA EAKAKAESEA KANASAKADK KKAKEAAKAA KKKNKRAIRN
370 380 390 400 410 420
SAKEADYFGD ADKATTIDEQ VGLIVDSLND EELVSTADKI KANAAGAKEV LKESAKTIVD
430
SGKLPSSLLS YFV