应用
从肺炎克雷伯氏菌中分离的柠檬酸裂解酶可用于消化低分子量人乳组分(>5 kDa,简称为 5kF)。
生化/生理作用
柠檬酸裂解酶存在于若干微生物中,用于催化柠檬酸盐裂解的第一步,形成草乙酸和乙酸盐。该酶含有 3 个多肽亚基,α-亚基(转移酶)、β-亚基(酰基裂解酶)和 γ-亚基(酰基-载体蛋白)。
单位定义
在 pH 7.6,25℃ 条件下,一个单位每分钟将 1.0 μmole 柠檬酸盐转化为草乙酸。
外形
冻干品,含有牛血清白蛋白、蔗糖和 MgSO4
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
含少量动物源组分生物产品
常规特殊物品
Genetics and molecular research : GMR, 3(2), 273-281 (2004-07-22)
Citrate is present in many natural substrates, such as milk, vegetables and fruits, and its metabolism by lactic acid bacteria (LAB) plays an important role in food fermentation. The industrial importance of LAB stems mainly from their ability to convert
European journal of biochemistry, 192(1), 161-166 (1990-08-28)
The primary structure of the beta-subunit (acyl lyase subunit) of citrate lyase from Klebsiella pneumoniae (ATCC 13,882) was determined with protein chemical methods. The polypeptide chain consists of 289 amino acid residues and has a molecular mass of 31,352 Da.
FEMS microbiology letters, 174(2), 231-238 (1999-05-26)
The citMCDEFGRP cluster from Leuconostoc paramesenteroides involved in citrate utilization was cloned and its nucleotide sequence determined. Homology of the inferred gene products with characterized enzymes reveals that citP encodes the citrate permease P, citC the citrate ligase and citDEF
Archives of microbiology, 175(1), 75-78 (2001-03-29)
Hydrogenobacter thermophilus strain TK-6 was observed to grow anaerobically on nitrate as an electron acceptor when molecular hydrogen was used as an energy source. Nitrite was detected as the product of a respiratory reaction. 15NO, 15N2O, and 15N2 were detected
Citric acid mediates the iron absorption from low molecular weight human milk fractions
Journal of Agricultural and Food Chemistry, 61(46), 11151-11157 (2013)
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