CDB15:0000158 C3 — ITGAM

Experimentally validated in Human; Orthology-inferred in Mouse, Rat, Frog, Zebrafish, Chicken, Macaque, Pig, Dog, Cow, Chimp, Horse, Marmoset, Sheep

Title

Journal:; Year Published:

Abstract

Isolation of complement-fragment-iC3b-binding proteins by affinity chromatography. The identification of p150,95 as an iC3b-binding protein.

The Biochemical journal, 1985; PubMed, Homo sapiens C3 — Homo sapiens ITGAM
ABSTRACT: The proteins from labelled human spleen membranes and polymorphonuclear leucocytes which bind to the iC3b fragment of complement component C3 were prepared by iC3b-Sepharose chromatography in the presence of bivalent cations. Complement receptor type 3(CR3) was eluted from iC3b-Sepharose by removal of bivalent cations. Complement receptors type 1 and 2 (present in spleen but not in polymorphonuclear leucocytes) were sequentially eluted by an NaCl gradient. An additional protein of Mr 135 000 was eluted from iC3b-Sepharose under the same conditions as those used to elute CR3. Preabsorption of the starting material on an anti-(CR3 beta-subunit) antibody column before iC3b-Sepharose chromatography removed the alpha- and beta-chains of CR3 and the 135 000-Mr protein. Preabsorption with iC3b-Sepharose before the anti-(CR3 beta-subunit) antibody column showed that iC3b binds CR3 and p150,95, the smallest member of the group of three homologous proteins that share the same beta-subunit.
Basic Information on C3
Ligand Name: complement C3
Other Symbols: CPAMD1, ARMD9, C3a, C3b
Ligand Location: secreted based on perplexity, uniprot
Interactions with other Receptors for C3
Basic Information on ITGAM
Receptor Name: integrin subunit alpha M
Other Symbols: CR3A, CD11B, MAC-1, CD11b
Receptor Location: cell membrane based on perplexity, uniprot
HGNC Gene Symbol Report: ITGAM
GeneCards: ITGAM