Sequence analysis of the Cs1-MMP cDNA.
A, Nucleotide sequence of the Cs1-MMP cDNA. The
deduced amino acid sequence is shown below the coding sequence and the
asterisk indicates the termination codon. The white arrow denotes the
5′ end of the partial cDNA. The dotted line indicates poly(A) stretches
intervening within positions 403 through 434 and responsible for
oligo(dT) priming during reverse transcription leading to the synthesis
of the partial cDNA. The black arrow denotes the putative signal
peptide cleavage site. The single-underlined sequence represents the
propeptide motif characteristic of the propeptide domain.
Double-underlined sequences indicate the zinc-binding consensus
sequence and the Met-turn-like motif characteristics of the catalytic
domain. Cs1-MMP polyadenylation sites at the 3′ end of the sequence,
identified by RACE-PCR, are indicated with a dot. The EMBL data library
accession number is AJ133371. B, Schematic representation of the
predicted Cs1-MMP protein showing the pre-pro-enzyme, which displays
all the hallmark motifs of MMPs, propeptide, zinc binding, and Met-turn
motifs.