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Cloning and Characterization of Cellulase Gene (cel5C) from Cow Rumen Metagenomic Library
김민근, 디렌 바르만, 강태호, 김정호, 김훈, 윤한대, Kim. Min-Keun, Barman. Dhirendra Nath, Kang. Tae-Ho, Kim. Jung-Ho, Kim. Hoon, Yun. Han-Dae 한국생명과학회 생명과학회지 10 Pages
한국생명과학회 생명과학회지 2012, Vol.22 No.4 437-446 (10 pages)
한우의 반추위에서 게놈 DNA를 분리하여 메타게놈 은행을 구축한 다음 섬유소분해효소를 암호화하는 유전자를 클로닝 및 유전자를 선별하였다. 선별된 유전자의 DNA 염기서열 및 아미노산 서열을 분석하고 유전산물의 생화학적인 특성을 조사하였다. $cel$5C 유전자는 1,125 bp로 374개의 아미노산 잔기를 가진 단백질을 암호화하였으며 이 단백질 분자량은 42 kDa이었다. 이 효소의 최적 pH는 4 근방이었으며 최적 온도는 $50^{circ}C$ 부근이었다. $cel$5C 유전자의 internal primer를 사용하여 인공적으로 배양할 수 있는 49종의... -
Cloning and Characterization of a Novel Carboxylesterase Gene from Cow Rumen Metagenomic Library
아스라풀 이스람, 김민근, 아라디아, 스리니 래디, 김은진, 김정호, 김훈, 윤한대, Asraful Islam. Shah Md., Kim. Min-Keun, Renukaradhya. K. Math, Srinivasa. Reddy R.N., Kim. E 한국생명과학회 생명과학회지 8 Pages
한국생명과학회 생명과학회지 2010, Vol.20 No.9 1306-1313 (8 pages)
한우의 반추위에서 게놈 DNA를 분리하여 메타게놈 은행을 구축한 다음 carboxylesterase를 암호화하는 유전자를 클로닝 및 유전자를 선별하였다. 선별된 유전자의 DNA 염기서열 및 아미노산 서열을 분석하고 유전산물의 생화학적인 특성을 조사하였다. est1R 유전자는 2,465 bp로 366개의 아미노산 잔기를 가진 단백질을 암호화하였으며 이 단백질의 이론적인 분자량은 61,166 Da이었다. Est1R단백질은 PNB carboxylesterase (P37967), acetylcholinesterase (1EEAA) 및 chain A (1H23A)와 각각 5.9%, 6.1%, 6.1% 상동성을 가지고 있었다.... -
Cloning of α-Amylase Gene from Unculturable Bacterium Using Cow Rumen Metagenome
조수정, 윤한대, Cho. Soo-Jeong, Yun. Han-Dae 한국생명과학회 생명과학회지 9 Pages
한국생명과학회 생명과학회지 2005, Vol.15 No.6 1013-1021 (9 pages)
미생물 메타게놈은 특이한 생체촉매의 다양한 원료로 제공된다. 한우의 반추위에서 게놈 DNA를 분리한 후 메타게놈 은행을 구축하고 $alpha$-amlylase를 암호화하는 유전자를 클로닝하여 DNA 및 아미노산 서열을 밝히고 생화적 특징을 조사하였다. amyA유전자는 1,893 bp로 631개의 아미노산 잔기를 가진 단백질을 암호화였으며 효소의 분자량은 단백질 전기영동 결과 약 71,000 Da으로 확인되었다. 이 효소를 다른 아밀라제와 비교한 결과 $21-59\%$의 상동성을 보였다. AnyA는 pH $6.40\%$에서 최적 활성을 나타내었고, pl값은... -
16S rDNA Analysis 9f Bacterial Diversity in Three Fractions of Cow Rumen
CHO. Soo-Jeong, CHO. Kye-Man, SHIN. Eun-Chule, LIM. Woo-Jin, HONG. Su-Young, CHOI. Byoung-Rock, Kang. Jung-Mi, LEE. Sun-Mi, KIM. Yong-He 한국미생물생명공학회 Journal of microbiology and biotechnology 10 Pages
한국미생물생명공학회 Journal of microbiology and biotechnology 2006, Vol.16 No.1 92-101 (10 pages)
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Left abomasal displacement between the uterus and rumen during bovine twin pregnancy
Bart Pardon*, Geert Vertenten, Pieter Cornillie, Stijn Schauvliege, Frank Gasthuys, Gunther van Loon, Piet Deprez 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 4호 16 437-440 (4 pages)
distension, but no ping sounds. An unusually high position of the gravid uterine horn on the left side was observed with ultrasound. Left exploratory laparotomy confirmed that the abomasum was displaced to the left and entrapped between the rumen and twin gravid uterine horn. A left surgical approach was necessary to correct the condition. Both animals recovered and gave birth to healthy twins. The present cases indicate that the subomental position of a heavy twin gravid uterine horn is a... -
Cloning and Identification of a New Group Esterase (Est5S) from Noncultured Rumen Bacterium
Kim. Min Keun, Kang. Tae Ho, Kim. Jungho, Kim. Hoon, Yun. Han Dae 한국미생물생명공학회 Journal of microbiology and biotechnology 10 Pages
한국미생물생명공학회 Journal of microbiology and biotechnology 2012, Vol.22 No.8 1044-1053 (10 pages)
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Comparative study on the aflatoxin B1 degradation ability of rumen fluid from Holstein steers and Korean native goats
Santi Devi Upadhaya, Ha Guyn Sung, Chan Hee Lee, Se Young Lee, Sun Woo Kim, Kyung Jin Cho, Jong K. Ha* 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2009, 제 10권 제 1호 5 29-34 (6 pages)
by collecting rumen fluid at different times (0, 3, 6, 9 and 12 h) after feeding. Cannulated Holstein steers (740 ± 10 kg bw) and Korean native goats (26 ± 3 kg bw) were fed a 60% timothy and 40% commercial diet with free access to water. Rumen fluid from Korean native goats demonstrated higher (p ＜ 0.01) aflatoxin B1 degradability than Holstein steers. However, filtration method had no significant influence on degradability. In addition, aflatoxin degradation did not depend upon rume... -
Ultrasonographic ovarian dynamic, plasma progesterone, and non-esterified fatty acids in lame postpartum dairy cows
Pedro Melendez, Veronica Gomez, Hans Bothe, Francisco Rodriguez, Juan Velez, Hernando Lopez, Julian Bartolome, Louis Archbald 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 3호 16 462-467 (6 pages)
The objective of this study was to compare ovulation rate, number of large ovarian follicles, and concentrations of plasma progesterone (P4) and non-esterified fatty acids (NEFA) between lame (n = 10) and non-lame (n = 10) lactating Holstein cows. The study was conducted in an organic dairy farm, and cows were evaluated by undertaking ultrasonography and blood sampling every 3 days from 30 days postpartum for a period of 34 days. Cows which became lame during the first 30 days postpartum... -
Retrospective surveillance of metabolic parameters affecting reproductive performance of Japanese Black breeding cows
Urara Watanabe, Mitsuhiro Takagi*, Osamu Yamato, Takeshige Otoi, Koji Okamoto 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 15 283-288 (6 pages)
This retrospective study was conducted to confirm the relationship between pre- and postpartum metabolic parameters and postpartum reproductive performance and to clarify seasonal characteristics of the metabolic parameters by using our metabolic profile test (MPT) database of Japanese Black breeding herds. In evaluation 1, MPT databases of blood samples from multiparous cows collected prepartum and postpartum were divided into two groups according to calving interval, and each MPT parameter was... -
Oxidative response of neutrophils to platelet-activating factor is altered during acute ruminal acidosis induced by oligofructose in heifers
Claudia Concha, María Daniella Carretta, Pablo Alarcón, Ivan Conejeros, Diego Gallardo, Alejandra Isabel H 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 7 217-224 (8 pages)
Reactive oxygen species (ROS) production is one of the main mechanisms used to kill microbes during innate immune response. D-lactic acid, which is augmented during acute ruminal acidosis, reduces platelet activating factor (PAF)-induced ROS production and L-selectin shedding in bovine neutrophils in vitro. This study was conducted to investigate whether acute ruminal acidosis induced by acute oligofructose overload in heifers interferes with ROS production and L-selectin shedding in blood...
