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Overview

Uniprot IDA0A286XEV3
Protein NameF-actin-capping protein subunit beta
Gene NameCAPZB
OrganismCavia porcellus

Kla Sites from experimental identification

Position Flanking peptide
252 SVQTFADKSKQEALK

Function

F-actin-capping proteins bind in a Ca(2+)-independent manner to the fast growing ends of actin filaments (barbed end) thereby blocking the exchange of subunits at these ends. Unlike other capping proteins (such as gelsolin and severin), these proteins do not sever actin filaments. Plays a role in the regulation of cell morphology and cytoskeletal organization. Forms, with CAPZB, the barbed end of the fast growing ends of actin filaments in the dynactin complex and stabilizes dynactin structure. The dynactin multiprotein complex activates the molecular motor dynein for ultra-processive transport along microtubules

Protein Sequence

10 MSDQQLDCAL 20 DLMRRLPPQQ 30 IEKNLSDLID 40 LVPSLCEDLL 50 SSVDQPLKIA 60 RDKMVGKDYL 70 LCDYNRDGDS 80 YRSPWSNKYD 90 PPLEDGAMPS 100 ARLRKLEVEA 110 NNAFDQYRDL 120 YFEGGVSSVY 130 LWDLDHGFAG 140 VILIKKAGDG 150 SKKIKGCWDS 160 IHVVEVQEKS 170 SGRTAHYKLT 180 STVMLWLQTN 190 KSGSGTMNLG 200 GSLTRQMEKD 210 ETVSDCSPHI 220 ANIGRLVEDM 230 ENKIRSTLNE 240 IYFGKTKDIV 250 NGLRSVQTFA 260 DKSKQEALKN 270 DLVEALKRKQ QC

Gene Ontology

Classification GO ID Description
Cellular Component GO:0008290 F-actin capping protein complex
Cellular Component GO:0030017 sarcomere
Molecular Function GO:0051015 actin filament binding
Biological Process GO:0030036 actin cytoskeleton organization
Biological Process GO:0051016 barbed-end actin filament capping
Biological Process GO:0000902 cell morphogenesis
Biological Process GO:0051490 negative regulation of filopodium assembly
Biological Process GO:0010591 regulation of lamellipodium assembly

Reference

[1] Feng J, Chen X, Li R, Xie Y, Zhang X et al.. Lactylome analysis reveals potential target modified proteins in the retina of form-deprivation myopia.. iScience 27(9):110606. 2024 Sep 20. PMID: 39246443.