Descriptions

PACSINs plays a central role in synaptic vesicle recycling and receptor-mediated endocytosis and controlling the cell surface expression of transmembrane proteins. The C-terminal SH3 of human homologous PACSIN2 (Q9UNF0) is an autoinhibitory domain affecting activation of the F-BAR domain. The competing binding of protein ligands to the SH3 or linker domain or posttranslational modifications of PACSIN2 permits activation of the F-BAR domain.

Autoinhibitory domains (AIDs)

Target domain

11-282 (F-BAR domain)

Relief mechanism

Ligand binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

2 structures for O13154

Entry ID Method Resolution Chain Position Source
4BNE X-ray 257 A A/B 1-448 PDB
AF-O13154-F1 Predicted AlphaFoldDB

No variants for O13154

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for O13154

No associated diseases with O13154

5 regional properties for O13154

Type Name Position InterPro Accession
domain FCH domain 16 - 104 IPR001060
domain SH3 domain 388 - 448 IPR001452
domain F-BAR domain 11 - 282 IPR031160
domain PACSIN1/PACSIN2, SH3 domain 391 - 446 IPR035743
domain PACSIN2, F-BAR domain 18 - 275 IPR037453

Functions

Description
EC Number
Subcellular Localization
  • Cell junction, focal adhesion
  • Cytoplasm
  • Cytoplasm, cytoskeleton
  • Cytoplasmic vesicle membrane ; Peripheral membrane protein ; Cytoplasmic side
  • Early endosome
  • Recycling endosome membrane
  • Cell projection, ruffle membrane ; Peripheral membrane protein ; Cytoplasmic side
  • Cell membrane ; Peripheral membrane protein ; Cytoplasmic side
  • Cell projection
  • Membrane, caveola
  • Detected at the neck of flask-shaped caveolae
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

10 GO annotations of cellular component

Name Definition
caveola A membrane raft that forms small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane. Examples include flask-shaped invaginations of the plasma membrane in adipocytes associated with caveolin proteins, and minute pits or incuppings of the cell membrane formed during pinocytosis. Caveolae may be pinched off to form free vesicles within the cytoplasm.
cytoplasm The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
cytoskeleton A cellular structure that forms the internal framework of eukaryotic and prokaryotic cells. The cytoskeleton includes intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles.
cytosol The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
early endosome A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways.
endosome A vacuole to which materials ingested by endocytosis are delivered.
focal adhesion A cell-substrate junction that anchors the cell to the extracellular matrix and that forms a point of termination of actin filaments. In insects focal adhesion has also been referred to as hemi-adherens junction (HAJ).
plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
recycling endosome membrane The lipid bilayer surrounding a recycling endosome.
ruffle membrane The portion of the plasma membrane surrounding a ruffle.

3 GO annotations of molecular function

Name Definition
cytoskeletal protein binding Binding to a protein component of a cytoskeleton (actin, microtubule, or intermediate filament cytoskeleton).
phosphatidic acid binding Binding to phosphatidic acid, any of a class of glycerol phosphate in which both the remaining hydroxyl groups of the glycerol moiety are esterified with fatty acids.
phospholipid binding Binding to a phospholipid, a class of lipids containing phosphoric acid as a mono- or diester.

7 GO annotations of biological process

Name Definition
actin cytoskeleton organization A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures comprising actin filaments and their associated proteins.
caveola assembly The aggregation, arrangement and bonding together of a set of components to form a caveola. A caveola is a plasma membrane raft that forms a small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane.
cytoskeleton organization A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of cytoskeletal structures.
endocytosis A vesicle-mediated transport process in which cells take up external materials or membrane constituents by the invagination of a small region of the plasma membrane to form a new membrane-bounded vesicle.
negative regulation of endocytosis Any process that stops, prevents, or reduces the frequency, rate or extent of endocytosis.
plasma membrane tubulation A membrane tubulation process occurring in a plasma membrane.
regulation of endocytosis Any process that modulates the frequency, rate or extent of endocytosis.

11 homologous proteins in AiPD

UniProt AC Gene Name Protein Name Species Evidence Code
P25623 SYP1 Suppressor of yeast profilin deletion Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast) PR
A7MBI0 PACSIN1 Protein kinase C and casein kinase substrate in neurons protein 1 Bos taurus (Bovine) SS
Q9UKS6 PACSIN3 Protein kinase C and casein kinase substrate in neurons protein 3 Homo sapiens (Human) SS
Q9BY11 PACSIN1 Protein kinase C and casein kinase substrate in neurons protein 1 Homo sapiens (Human) EV
Q9UNF0 PACSIN2 Protein kinase C and casein kinase substrate in neurons protein 2 Homo sapiens (Human) EV
Q61644 Pacsin1 Protein kinase C and casein kinase substrate in neurons protein 1 Mus musculus (Mouse) EV
Q99JB8 Pacsin3 Protein kinase C and casein kinase II substrate protein 3 Mus musculus (Mouse) SS
Q9WVE8 Pacsin2 Protein kinase C and casein kinase substrate in neurons protein 2 Mus musculus (Mouse) EV
Q9Z0W5 Pacsin1 Protein kinase C and casein kinase substrate in neurons protein 1 Rattus norvegicus (Rat) SS
Q9QY17 Pacsin2 Protein kinase C and casein kinase substrate in neurons 2 protein Rattus norvegicus (Rat) SS
Q4V920 pacsin1b Protein kinase C and casein kinase substrate in neurons protein 1 Danio rerio (Zebrafish) (Brachydanio rerio) SS
10 20 30 40 50 60
MSGSYDDSVG VEVSSDSFWE VGNYKRTVKR IDDGHRLCND LMNCIHERAR IEKVYAQQLT
70 80 90 100 110 120
EWAKRWKQLV EKGPQYGTVE RAWCAFMSEA EKVSELHLEV KGSLMNEDFE KIKNWQKEAF
130 140 150 160 170 180
HKQMMGGFKE TKEAEDGFRK AQKPWAKKLK EVEAAKKAYH AACKEEKLAI SRETNSKADP
190 200 210 220 230 240
ALNPEQLKKL QDKVERSKQD VLKTKAKYEK SLKELDNATP QYMENMEQVF EQCQQFEEKR
250 260 270 280 290 300
LRFFREVLLE VQKHLDLSNV ASYKNIYREL EQNIKTADAV EDLRWFRANQ GPGMSMNWPQ
310 320 330 340 350 360
FEDDEWSADL NRTLSRREKK KASDGVTLTG INQTGDQVSQ PNKHSSVSSY EKNQSYPTDW
370 380 390 400 410 420
SDEESNNPFS STDAKGDTNP FDEDTSPVME VRVRALYDYE GQEQDELSFK AGDELTKMEN
430 440
EDEQGWCKGR LDNGQVGLYP ANYVEPIQ