What integral membrane protein family made of two membrane-spanning chains ( $\alpha$ and $\beta$ )is involved in attaching cells to their extracellular microenvironment?

Question

What integral membrane protein family made of two membrane-spanning chains (

\alpha

and

\beta

)is involved in attaching cells to their extracellular microenvironment?

What integral membrane protein family made of two membrane-spanning chains ( α\alphaα and β\betaβ )is involved in attaching cells to their extracellular microenvironment?