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尖吻蝮蛇血凝酶-B
专利权人:
BEIJING KONRUNS PHARMACEUTICAL CO., LTD;北京康辰药业有限公司;WANG, Xijuan;王锡娟; LTD;BEIJING KONRUNS PHARMACEUTICAL CO.
发明人:
SUN, Di,孙狄
申请号:
CNCN2013/000375
公开号:
WO2014/075374A1
申请日:
2013.04.01
申请国别(地区):
CN
年份:
2014
代理人:
摘要:
The present invention provides agkistrodon acutus hemocoagulase-B. The agkistrodon acutus hemocoagulase-B is high-activity hemocoagulase separated from agkistrodon acutus venom. The hemocoagulase is a single-stranded glycoprotein comprising 236 amino acids, and has an amino acid sequence shown as SEQ ID No. 1. The strand comprises 6 pairs of disulfide bonds; the molecular weight of SDS-PAGE is approximately 35kD; the molecular weight after deglycosylation is 26116.7Da; and an isoelectric point (pI) is 6.0. A hemocoagulase molecule is modified by heterozygotic polysaccharides at an Asn 77, 100, 229 site. The hemocoagulase is serine proteinase. The present invention further provides a separation and purification method of the hemocoagulase. The method comprise: removing undissolved substances by using pretreatment; performing anion-exchange column chromatography for two times and Sephdex-G75 molecular sieve chromatography for one time; obtaining an active elution peak; performing dialysis and lyophilization, so as to obtain the high-purity agkistrodon acutus venom hemocoagulase. The activity of the agkistrodon acutus venom hemocoagulase is not less than 2000U/mg; the purity in the HPLC analysis can exceed 95%; and the yield is 0.25% to 0.30% calculated according to the weight of an agkistrodon acutus venom raw material.La présente invention concerne l'hémocoagulase-B d'agkistrodon acutus. L'hémocoagulase-B d'agkistrodon acutus est une hémocoagulase de grande activité séparée du venin d'agkistrodon acutus. L'hémocoagulase est une glycoprotéine simple brin comprenant 236 acides aminés, et a une séquence d'acides aminés représentée par SEQ ID No. 1. Le brin comprend 6 paires de liaisons disulfure ; le poids moléculaire de SDS-PAGE est d'environ 35 kD ; le poids moléculaire après déglycosylation est de 26 116,7 Da ; et un point isoélectrique (pI) est de 6,0. Une molécule d'hémocoagulase est modifiée par des polysaccharides hétérozygotes au niveau d'un site Asn77, 100, 229
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/
相关发明人
sun, di
孙狄
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