Table 1

Functional properties of the tissue inhibitors of metalloproteinases (TIMPs) (based on reviews [1-4])

Property
TIMP-1
TIMP-2
TIMP-3
TIMP-4

Approximate protein size
28 kDa
21 kDa
24/27 kDa
22 kDa
Localisation
Soluble
Soluble + cell surface
Extracellular matrix
Cell surface, tissue-specific
Intracellular activation
Receptor(s) Nuclear translocation
Receptor(s)
No
Not known
Proteinase type inhibition
Secreted MMP, ADAMTS
Secreted MMP, MT-MMP
MT-MMP, ADAMTS
Secreted MMP, MT-MMP
Apoptosis
Inhibits (BCL-2 regulation)
Inhibits
Promotes (TACE, death receptors)
Promotes
Angiogenesis
Inhibits
Inhibits
Inhibits
Inhibits
Proliferation
Stimulates
Stimulates
Inhibits
Stimulates
Tumour growth
Promotes
Promotes
Inhibits
Not known
Knockout mice
Resistance to Pseudomonas infection
Impaired pro-MMP2 activation
Lung emphysema, chronic hepatitis. High TNF-α
Not known

ADAMTS, a disintegrin and metalloproteinase domain with thrombospondin motifs; MMP, matrix metallproteinase; MT-MMP, membrane-type matrix metalloproteinase; TACE, tumour-necrosis-factor-α-converting enzyme; TIMP, tissue inhibitor of metalloproteinases; TNF, tumour necrosis factor.

Bokarewa et al. Arthritis Research & Therapy 2005 7:R1014   doi:10.1186/ar1771

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