Claims for Patent: 5,453,371

Summary for Patent: 5,453,371

Title:	Bacterial collagenase gene of Vibrio alginolyticus
Abstract:	A collagenase gene derived from bacteria of the species Vibrio alginolyticus is disclosed. A recombinant vector containing the gene, a host cell transformed with a plasmid containing the gene and a process for the production of a collagenase by using the host cells are also disclosed.
Inventor(s):	Shibano; Yuji (Toyonaka, JP), Morihara; Kazuyuki (Shimonoseki, JP), Okuda; Kenji (Yokohama, JP), Fukushima; Jun (Tokyo, JP)
Assignee:	Suntory Limited (Osaka, JP)
Application Number:	07/618,946
Patent Claims:	1. An isolated and purified gene encoding a collagenase of Vibrio alginolyticus and having a restriction map as shown in FIG. 1. 2. A recombinant vector comprising the gene of claim 1. 3. An E. coli host cell transformed with a plasmid comprising the gene of claim 1. 4. A process for the production of a collagenase which comprises cultivating the E. coli host cell of claim 3 to express the collagenase, and recovering the collagenase. 5. The gene according to claim 1, which is the 2.7 kb HpaI-EcoRV fragment shown in the restriction map of FIG. 1. 6. A recombinant vector comprising the gene of claim 5. 7. An E. coli host cell transformed with a plasmid comprising the gene of claim 5. 8. A process for the production of a collagenase which comprises cultivating the E. coli cell of claim 7 to express the collagenase, and recovering the collagenase. 9. The gene according to claim 5, wherein said collagenase comprises peptide fragments of the formulas (a) to (t), the peptide fragments of the formulas (a) and (c) to (t) being shown in SEQ ID Nos. 3-21: (a): S Q L S R (b): I Y R (c): Y T G N A S S V V K (d): A S S I G A E D E F M A A N A G R E (e): E S V D A F V N (f): Q G N W I N Y K (g): M G Y E E G Y F H Q S L (h): A L G D F A L R (i): W G Y L A V R (j): A G Y Y A E (k): V W W S E (l): W V T P A V K E (m): L D G R F D L Y G G F S H P T E K (n): Y N D N I S F (o): S S T D Y G K Y A G P I F D (p): G D P S Q P G N I P N F I A Y E (q): Y V H Y L D G R F D (r): T A S Y Y A D C S E (s): W N D Q Y (t): G Y T G G G S D E L wherein A is alanine, C is cysteine, D is aspartic acid, E is glutamic acid, F is phenylalanine, G is glycine, H is histidine, I is isoleucine, K is lysine, L is leucine, M is methionine, N is asparagine, P is proline, Q is glutamine, R is arginine, S is serine, T is threonine, V is valine, W is tryptophan and Y is tyrosine. 10. An isolated and purified gene encoding a collagenase having an amino acid sequence comprising the amino acid sequence of the following formula as shown in SEQ ID No. 22: ##STR2## wherein X is hydrogen, and wherein A is alanine, C is cysteine, D is aspartic acid, E is glutamic acid, F is phenylalanine, G is glycine, H is histidine, I is isoleucine, K is lysine, L is leucine, M is methionine, N is asparagine, P is proline, Q is glutamine, R is arginine, S is serine, T is threonine, V is valine, W is tryptophan and Y is tyrosine. 11. An isolated and purified gene encoding a collagenase having an amino acid sequence consisting of the amino acid sequence of the following formula as shown in SEQ ID No. 22: ##STR3## wherein X is hydrogen, and wherein A is alanine, C is cysteine, D is aspartic acid, E is glutamic acid, F is phenylalanine, G is glycine, H is histidine, I is isoleucine, K is lysine, L is leucine, M is methionine, N is asparagine, P is proline, Q is glutamine, R is arginine, S is serine, T is threonine, V is valine, W is tryptophan and Y is tyrosine. 12. A recombinant vector comprising the gene of claim 10 or 11. 13. An E. coli host cell transformed with a plasmid comprising the gene of claim 10 or 11. 14. A process for the production of a collagenase which comprises cultivating the host cells of claim 13 to express the collagenase, and recovering the collagenase. 15. An isolated and purified gene encoding a collagenase precursor having an amino acid sequence comprising the amino acid sequence of the following formula as shown. in SEQ ID No. 23: ##STR4## wherein X is a polypeptide of the formula: ##STR5## and wherein A is alanine, C is cysteine, D is aspartic acid, E is glutamic acid, F is phenylalanine, G is glycine, H is histidine, I is isoleucine, K is lysine, L is leucine, M is methionine, N is asparagine, P is proline, Q is glutamine, R is arginine, S is serine, T is threonine, V is valine, W is tryptophan and Y is tyrosine. 16. An isolated and purified gene encoding a collagenase precursor having an amino acid sequence consisting of the amino acid sequence of the following formula as shown in SEQ ID No. 23: ##STR6## wherein X is a polypeptide of the formula: ##STR7## and wherein A is alanine, C is cysteine, D is aspartic acid, E is glutamic acid, F is phenylalanine, G is glycine, H is histidine, I is isoleucine, K is lysine, L is leucine, M is methionine, N is asparagine, P is proline, Q is glutamine, R is arginine, S is serine, T is threonine, V is valine, W is tryptophan and Y is tryosine. 17. A recombinant vector comprising the gene of claim 15 or 16. 18. An E. coli host cell transformed with a plasmid comprising the gene of claim 15 or 16. 19. A process for the production of a collagenase which comprises cultivating the host cells of claim 18 to express the collagenase, and recovering the collagenase. 20. An isolated and purified gene encoding a collagenase of Vibrio alginolyticus which comprises a DNA sequence of the following formula as shown in SEQ ID No. 24: ##STR8## wherein Z is hydrogen. 21. An isolated and purified gene encoding a collagenase precursor of Vibrio alginolyticus which comprises a DNA sequence of the following formula as shown in SEQ ID No. 25: ##STR9## wherein Z is a DNA sequence of the formula: ##STR10## 22. A process for the production of a collagenase of Vibrio alginolyticus which comprises: inserting Bam HI linker into Hpa I site at Base No. 1213 on a DNA fragment of 7 kb composing the plasmid pLCO-1 of Escherichia coli JM 101 (FERM BP-3113) and inserting Sal I linker into Eco RV site at Base No. 3936 on the DNA fragment; cleaving said pLCO-1 containing the two linkers with Bam HI and Sal I to obtain a DNA fragment of 2.7 kb containing an entire collagenase gene; inserting said DNA fragment into Bam HI/Sal I site of a vector to obtain a recombinant plasmid; transforming Escherichia coli with said recombinant plasmid to obtain host cells; cultivating said host cells to express the collagenase; and recovering the collagenase.

Details for Patent 5,453,371

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Smith & Nephew, Inc.	SANTYL	collagenase	Ointment	101995	06/04/1965		2012-09-26