Descriptions

Small GTPases couple their GDP/GTP structural cycle to cytosol/membrane alternation to function as versatile molecular switches in the cell. Membrane localization of their active, GTP-bound form is pivotal to their ability to propagate information, and this requires their post-translational modification by lipids.<br>Arf GTPases are modified by a myristate attached to their N-terminus, which is shielded by intramolecular interactions in their inactive state. The myristoylated N-terminus of Arf is autoinhibitory in solution and is displaced by membranes, priming Arf GTPases for activation by their GEFs. Replacement of the N-terminal myristate by a 6xHis-tag preserves autoinhibition, representing that membranes unlock the N-terminal region to facilitate subsequent activation.

Autoinhibitory domains (AIDs)

Target domain

16-138 (Small GTP-binding protein domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for P84083

Entry ID Method Resolution Chain Position Source
AF-P84083-F1 Predicted AlphaFoldDB

No variants for P84083

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for P84083

No associated diseases with P84083

5 regional properties for P84083

Type Name Position InterPro Accession
domain Protein kinase domain 73 - 331 IPR000719
domain EF-hand domain 444 - 513 IPR002048
active_site Serine/threonine-protein kinase, active site 193 - 205 IPR008271
binding_site Protein kinase, ATP binding site 79 - 106 IPR017441
binding_site EF-Hand 1, calcium-binding site 491 - 503 IPR018247

Functions

Description
EC Number
Subcellular Localization
  • Golgi apparatus
  • Cytoplasm, perinuclear region
  • Membrane ; Lipid-anchor
  • Golgi apparatus, trans-Golgi network membrane ; Lipid-anchor
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

4 GO annotations of cellular component

Name Definition
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
Golgi apparatus A membrane-bound cytoplasmic organelle of the endomembrane system that further processes the core oligosaccharides (e.g. N-glycans) added to proteins in the endoplasmic reticulum and packages them into membrane-bound vesicles. The Golgi apparatus operates at the intersection of the secretory, lysosomal, and endocytic pathways.
perinuclear region of cytoplasm Cytoplasm situated near, or occurring around, the nucleus.
plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

2 GO annotations of molecular function

Name Definition
GTP binding Binding to GTP, guanosine triphosphate.
GTPase activity Catalysis of the reaction

3 GO annotations of biological process

Name Definition
intracellular protein transport The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell.
retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum The directed movement of substances from the Golgi back to the endoplasmic reticulum, mediated by vesicles bearing specific protein coats such as COPI or COG.
vesicle-mediated transport A cellular transport process in which transported substances are moved in membrane-bounded vesicles; transported substances are enclosed in the vesicle lumen or located in the vesicle membrane. The process begins with a step that directs a substance to the forming vesicle, and includes vesicle budding and coating. Vesicles are then targeted to, and fuse with, an acceptor membrane.

47 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
Q2KJ96 ARL5A ADP-ribosylation factor-like protein 5A Bos taurus (Bovine) SS
P84081 ARF2 ADP-ribosylation factor 2 Bos taurus (Bovine) SS
P84080 ARF1 ADP-ribosylation factor 1 Bos taurus (Bovine) SS
Q3SZF2 ARF4 ADP-ribosylation factor 4 Bos taurus (Bovine) SS
Q0VC18 ARL4D ADP-ribosylation factor-like protein 4D Bos taurus (Bovine) PR
P49702 ARF5 ADP-ribosylation factor 5 Gallus gallus (Chicken) SS
P61209 Arf1 ADP-ribosylation factor 1 Drosophila melanogaster (Fruit fly) SS
P40945 Arf4 ADP ribosylation factor 4 Drosophila melanogaster (Fruit fly) SS
P61204 ARF3 ADP-ribosylation factor 3 Homo sapiens (Human) EV
A6NH57 ARL5C Putative ADP-ribosylation factor-like protein 5C Homo sapiens (Human) SS
Q969Q4 ARL11 ADP-ribosylation factor-like protein 11 Homo sapiens (Human) PR
Q9Y689 ARL5A ADP-ribosylation factor-like protein 5A Homo sapiens (Human) SS
P18085 ARF4 ADP-ribosylation factor 4 Homo sapiens (Human) EV
P49703 ARL4D ADP-ribosylation factor-like protein 4D Homo sapiens (Human) PR
Q8N4G2 ARL14 ADP-ribosylation factor-like protein 14 Homo sapiens (Human) SS
Q9H0F7 ARL6 ADP-ribosylation factor-like protein 6 Homo sapiens (Human) SS
Q96KC2 ARL5B ADP-ribosylation factor-like protein 5B Homo sapiens (Human) SS
P84077 ARF1 ADP-ribosylation factor 1 Homo sapiens (Human) EV
P84085 ARF5 ADP-ribosylation factor 5 Homo sapiens (Human) EV
Q8IVW1 ARL17A ADP-ribosylation factor-like protein 17 Homo sapiens (Human) SS
P49076 ARF1 ADP-ribosylation factor Zea mays (Maize) SS
P61750 Arf4 ADP-ribosylation factor 4 Mus musculus (Mouse) SS
Q99PE9 Arl4d ADP-ribosylation factor-like protein 4D Mus musculus (Mouse) PR
Q6P068 Arl5c ADP-ribosylation factor-like protein 5C Mus musculus (Mouse) SS
Q80ZU0 Arl5a ADP-ribosylation factor-like protein 5A Mus musculus (Mouse) SS
P61205 Arf3 ADP-ribosylation factor 3 Mus musculus (Mouse) SS
Q9D4P0 Arl5b ADP-ribosylation factor-like protein 5B Mus musculus (Mouse) SS
P84078 Arf1 ADP-ribosylation factor 1 Mus musculus (Mouse) SS
Q8BSL7 Arf2 ADP-ribosylation factor 2 Mus musculus (Mouse) SS
P84084 Arf5 ADP-ribosylation factor 5 Mus musculus (Mouse) SS
P51824 ADP-ribosylation factor 1 Solanum tuberosum (Potato) SS
P51646 Arl5a ADP-ribosylation factor-like protein 5A Rattus norvegicus (Rat) SS
P61206 Arf3 ADP-ribosylation factor 3 Rattus norvegicus (Rat) SS
P61751 Arf4 ADP-ribosylation factor 4 Rattus norvegicus (Rat) SS
P84079 Arf1 ADP-ribosylation factor 1 Rattus norvegicus (Rat) SS
P84082 Arf2 ADP-ribosylation factor 2 Rattus norvegicus (Rat) SS
P62332 Arf6 ADP-ribosylation factor 6 Rattus norvegicus (Rat) SS
P36407 Trim23 E3 ubiquitin-protein ligase TRIM23 Rattus norvegicus (Rat) SS
P51823 ARF ADP-ribosylation factor 2 Oryza sativa subsp. japonica (Rice) SS
Q06396 Os01g0813400 ADP-ribosylation factor 1 Oryza sativa subsp. japonica (Rice) SS
Q10943 arf-1.2 ADP-ribosylation factor 1-like 2 Caenorhabditis elegans SS
P34212 arl-5 ADP-ribosylation factor-like protein 5 Caenorhabditis elegans SS
P40940 ARF3 ADP-ribosylation factor 3 Arabidopsis thaliana (Mouse-ear cress) SS
P36397 ARF1 ADP-ribosylation factor 1 Arabidopsis thaliana (Mouse-ear cress) SS
P0DH91 ARF2-B ADP-ribosylation factor 2-B Arabidopsis thaliana (Mouse-ear cress) SS
Q9LQC8 ARF2-A ADP-ribosylation factor 2-A Arabidopsis thaliana (Mouse-ear cress) SS
Q5M9P8 arl6 ADP-ribosylation factor-like protein 6 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MGLTVSALFS RIFGKKQMRI LMVGLDAAGK TTILYKLKLG EIVTTIPTIG FNVETVEYKN
70 80 90 100 110 120
ICFTVWDVGG QDKIRPLWRH YFQNTQGLIF VVDSNDRERV QESADELQKM LQEDELRDAV
130 140 150 160 170
LLVFANKQDM PNAMPVSELT DKLGLQHLRS RTWYVQATCA TQGTGLYDGL DWLSHELSKR