IMPTA_XENTR
ID IMPTA_XENTR Reviewed; 318 AA.
AC Q5M8G6;
DT 29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-2005, sequence version 1.
DT 03-AUG-2022, entry version 79.
DE RecName: Full=Protein IMPACT-A;
DE AltName: Full=Imprinted and ancient gene protein homolog A;
GN Name=impact-A; ORFNames=TNeu063h23.1;
OS Xenopus tropicalis (Western clawed frog) (Silurana tropicalis).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Silurana.
OX NCBI_TaxID=8364;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Neurula;
RG Sanger Xenopus tropicalis EST/cDNA project;
RL Submitted (OCT-2006) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RG NIH - Xenopus Gene Collection (XGC) project;
RL Submitted (DEC-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Translational regulator that ensures constant high levels of
CC translation upon a variety of stress conditions, such as amino acid
CC starvation, UV-C irradiation, proteasome inhibitor treatment and
CC glucose deprivation. Plays a role as a negative regulator of the
CC EIF2AK4/GCN2 kinase activity; impairs GCN1-mediated EIF2AK4/GCN2
CC activation, and hence EIF2AK4/GCN2-mediated eIF-2-alpha phosphorylation
CC and subsequent down-regulation of protein synthesis. Plays a role in
CC differentiation of neuronal cells by stimulating neurite outgrowth.
CC {ECO:0000250|UniProtKB:O55091}.
CC -!- SUBUNIT: Interacts with GCN1; prevents the interaction of GCN1 with
CC EIF2AK4/GCN2 and inhibits EIF2AK4/GCN2 kinase activity. Interaction
CC with RPL39; this interaction occurs in a GCN1-independent manner.
CC Associates with ribosomes; this interaction occurs in a GCN1-
CC independent manner. Associates with actin; this interaction occurs in a
CC GCN1-independent manner. {ECO:0000250|UniProtKB:O55091}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:O55091}.
CC -!- SIMILARITY: Belongs to the IMPACT family. {ECO:0000305}.
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DR EMBL; CR760285; CAJ83093.1; -; mRNA.
DR EMBL; BC088032; AAH88032.1; -; mRNA.
DR RefSeq; NP_001011308.1; NM_001011308.1.
DR AlphaFoldDB; Q5M8G6; -.
DR SMR; Q5M8G6; -.
DR STRING; 8364.ENSXETP00000033381; -.
DR PaxDb; Q5M8G6; -.
DR DNASU; 496763; -.
DR GeneID; 496763; -.
DR KEGG; xtr:496763; -.
DR CTD; 55364; -.
DR Xenbase; XB-GENE-947990; impact.
DR eggNOG; KOG3299; Eukaryota.
DR InParanoid; Q5M8G6; -.
DR OrthoDB; 1400092at2759; -.
DR Proteomes; UP000008143; Chromosome 6.
DR Proteomes; UP000790000; Unplaced.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0005844; C:polysome; ISS:UniProtKB.
DR GO; GO:0071468; P:cellular response to acidic pH; ISS:UniProtKB.
DR GO; GO:0034198; P:cellular response to amino acid starvation; ISS:UniProtKB.
DR GO; GO:0072755; P:cellular response to benomyl; ISS:UniProtKB.
DR GO; GO:0042149; P:cellular response to glucose starvation; ISS:UniProtKB.
DR GO; GO:0070301; P:cellular response to hydrogen peroxide; ISS:UniProtKB.
DR GO; GO:1990253; P:cellular response to leucine starvation; ISS:UniProtKB.
DR GO; GO:0071494; P:cellular response to UV-C; ISS:UniProtKB.
DR GO; GO:0140469; P:GCN2-mediated signaling; ISS:UniProtKB.
DR GO; GO:0060548; P:negative regulation of cell death; ISS:UniProtKB.
DR GO; GO:0031953; P:negative regulation of protein autophosphorylation; ISS:UniProtKB.
DR GO; GO:0001933; P:negative regulation of protein phosphorylation; ISS:UniProtKB.
DR GO; GO:0031333; P:negative regulation of protein-containing complex assembly; ISS:UniProtKB.
DR GO; GO:0000122; P:negative regulation of transcription by RNA polymerase II; ISS:UniProtKB.
DR GO; GO:0097201; P:negative regulation of transcription from RNA polymerase II promoter in response to stress; ISS:UniProtKB.
DR GO; GO:1990138; P:neuron projection extension; ISS:UniProtKB.
DR GO; GO:0045666; P:positive regulation of neuron differentiation; ISS:UniProtKB.
DR GO; GO:0071264; P:positive regulation of translational initiation in response to starvation; ISS:UniProtKB.
DR GO; GO:0006446; P:regulation of translational initiation; IBA:GO_Central.
DR Gene3D; 3.10.110.10; -; 1.
DR Gene3D; 3.30.230.30; -; 1.
DR InterPro; IPR023582; Impact.
DR InterPro; IPR001498; Impact_N.
DR InterPro; IPR036956; Impact_N_sf.
DR InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR InterPro; IPR006575; RWD-domain.
DR InterPro; IPR016135; UBQ-conjugating_enzyme/RWD.
DR PANTHER; PTHR16301; PTHR16301; 1.
DR Pfam; PF05773; RWD; 1.
DR Pfam; PF01205; UPF0029; 1.
DR SMART; SM00591; RWD; 1.
DR SUPFAM; SSF54211; SSF54211; 1.
DR SUPFAM; SSF54495; SSF54495; 1.
DR PROSITE; PS50908; RWD; 1.
PE 2: Evidence at transcript level;
KW Cytoplasm; Differentiation; Neurogenesis; Reference proteome; Repressor;
KW Stress response; Translation regulation.
FT CHAIN 1..318
FT /note="Protein IMPACT-A"
FT /id="PRO_0000330856"
FT DOMAIN 14..116
FT /note="RWD"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00179"
FT REGION 296..318
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 300..318
FT /note="Basic and acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 318 AA; 36101 MW; E43D5F779EC5C637 CRC64;
MADTEEENLQ SQIDEVEALT SIYGDEWCVI DEAERIFCIT VSDSSNKPTW TLCLQVILPA
EYPASSPPLY QLNAPWLRGE DRLTLANNLE EIYLQNLGEN ILYQWVEKIR EFLLGKSQTS
DPGPCLKSTS EETDVDDDCE IPAEELNESF KNSMLFGLND SSGVEEIPPI IHGETITDRR
STFQAHLAPV VSPYQVKLIL NKLYENKKIA TATHNIYAYR IYIKERNSFI QDCEDDGETA
AGKRMLHLMQ ILDARDVMVV VSRWYGGILL GPDRFKHINN CARNILMEHK YCSAGEESSK
QTAKSKKVGK ECKKKADH
