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Author Chiba, K.; Ikai, A.; Kawamura-Konishi, Y.; Kihara, H.
Title (up) Kinetic study on myoglobin refolding monitored by five optical probe stopped-flow methods Type Journal Article
Year 1994 Publication Proteins Abbreviated Journal Proteins
Volume 19 Issue 2 Pages 110-119
Keywords Animals; Chromatography, Gel; Circular Dichroism; Horses; Kinetics; Metmyoglobin/analogs & derivatives/chemistry; Myoglobin/*chemistry; *Protein Folding; Spectrometry, Fluorescence; Spectrophotometry, Ultraviolet; Urea
Abstract The refolding kinetics of horse cyanometmyoglobin induced by concentration jump of urea was investigated by five optical probe stopped-flow methods: absorption at 422 nm, tryptophyl fluorescence at around 340 nm, circular dichroism (CD) at 222 nm, CD at 260 nm, and CD at 422 nm. In the refolding process, we detected three phases with rate constants of > 1 x 10(2) s-1, (4.5-9.3) s-1, and (2-5) x 10(-3) s-1. In the fastest phase, a substantial amount of secondary structure (approximately 40%) is formed within the dead time of the CD stopped-flow apparatus (10.7 ms). The kinetic intermediate populated in the fastest phase is shown to capture a hemindicyanide, suggesting that a “heme pocket precursor” recognized by hemindicyanide must be constructed within the dead time. In the middle phase, most of secondary and tertiary structures, especially around the captured hemindicyanide, have been constructed. In the slowest phase, we detected a minor structural rearrangement accompanying the ligand-exchange reaction in the fifth coordination of ferric iron. We present a possible model for the refolding process of myoglobin in the presence of the heme group.
Address Laboratory of Biodynamics, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Kanagawa, Japan
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ISSN 0887-3585 ISBN Medium
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Notes PMID:8090705 Approved no
Call Number Equine Behaviour @ team @ Serial 3799
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Author Premack D; Premack AJ
Title (up) Levels of causal understanding in chimpanzees and children Type Journal Article
Year 1994 Publication Cognition Abbreviated Journal
Volume 50 Issue Pages 347
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3072
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Author Manson, J.H.
Title (up) Male aggression: a cost of female mate choice in Cayo Santiago rhesus macaques Type Journal Article
Year 1994 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 48 Issue Pages 473-475
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Notes 10.1006/anbe.1994.1262 Approved no
Call Number Equine Behaviour @ team @ Serial 4888
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Author Barber, J.A.; Crowell-Davis, S.L.
Title (up) Maternal behavior of Belgian (Equus caballus) mares Type Journal Article
Year 1994 Publication Applied Animal Behaviour Science Abbreviated Journal Appl. Anim. Behav. Sci.
Volume 41 Issue 3-4 Pages 161-189
Keywords Belgian; Draft horse; Ontogeny; Maternal aggression; Maternal behavior; Nursing behavior; Recumbency response
Abstract The relationship between ten Belgian mares and their offspring was studied from the first day of foal life to 17 weeks of age. Mares and foals spent more time at greater distances from each other as foals matured. Mares exhibited the recumbency response, being in closer proximity to their foals when foals were recumbent than when they were upright. Foals initiated the majority of nursing bouts. Frequency and duration of nursing bouts and percentage of time resting recumbently declined as foals matured. Foals also terminated the their foals, and they were most likely to do so in the first month of foal life. Maternal initiation of nursing. There was usually no discernible foal response to maternal aggression. Little difference between maternal behavior directed towards colts and fillies was found for all aspects of the study. Maternal behavior in the Belgian draft horse was similar to that reported for other equid breeds.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 2268
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Author Thun, R.; Schwarz-Porsche, D.
Title (up) Nebennierenrinde Type Book Whole
Year 1994 Publication Veterinärmedizinische Endokrinologie. Abbreviated Journal
Volume Issue 3. Aufl. Pages 309-351
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Publisher Verlag Gustav Fischer Place of Publication Jena, Stuttgart Editor F.H.Döcke
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5998
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Author Ballou, J.
Title (up) Population Biology Type Book Chapter
Year 1994 Publication Przewalski’s horse: The History and Biology of an Endangered Species Abbreviated Journal
Volume Issue Pages
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Publisher tate University of New York Press Place of Publication Albany Editor Boyd,L.;Houpt, C.A
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5187
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Author Boyd, L.; Houpt, K..A.
Title (up) Przewalski's Horse. The History and Biology of an Endangered Species Type Book Whole
Year 1994 Publication Abbreviated Journal SUNY Press
Volume Issue Pages 313
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Publisher SUNY Press Place of Publication Editor
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ISSN ISBN 9780791418895 Medium
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Notes from Professor Hans Klingels Equine Reference List Approved yes
Call Number Serial 971
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Author Connor, R.J.; Kawaoka, Y.; Webster, R.G.; Paulson, J.C.
Title (up) Receptor specificity in human, avian, and equine H2 and H3 influenza virus isolates Type Journal Article
Year 1994 Publication Virology Abbreviated Journal Virology
Volume 205 Issue 1 Pages 17-23
Keywords Amino Acid Sequence; Amino Acids/genetics; Animals; Carbohydrate Sequence; Chick Embryo; Hemagglutinin Glycoproteins, Influenza Virus; Hemagglutinins, Viral/genetics; Influenza A virus/*metabolism; Molecular Sequence Data; Receptors, Virus/*metabolism; Species Specificity; Viral Envelope Proteins/genetics
Abstract The receptor specificity of 56 H2 and H3 influenza virus isolates from various animal species has been determined to test the relevance of receptor specificity to the ecology of influenza virus. The results show that the receptor specificity of both H2 and H3 isolates evaluated for sialic acid linkage specificity and inhibition of hemagglutination by horse serum correlates with the species of origin, as postulated earlier for H3 strains based on a limited survey of five human, three avian, and one equine strain. Elucidation of the amino acid sequence of several human H2 receptor variants and analysis of known sequences of H2 and H3 isolates revealed that receptor specificity varies in association with an amino acid change at residues 228 in addition to the change at residue 226 previously documented to affect receptor specificity of H3 but not H1 isolates. Residues 226 and 228 are leucine and serine in human isolates, which preferentially bind sialic acid alpha 2,6-galactose beta 1,4-N-acetyl glucosamine (SA alpha 2,6Gal), and glutamine and glycine in avian and equine isolates, which exhibit specificity for sialic acid alpha-2,3-galactose beta-1,3-N-acetyl galactosamine (SA alpha 2,3Gal). The results demonstrate that the correlation of receptor specificity and species of origin is maintained across both H2 and H3 influenza virus serotypes and provide compelling evidence that influenza virus hosts exert selective pressure to maintain the receptor specificity characteristics of strains isolated from that species.
Address Department of Biological Chemistry, UCLA School of Medicine 90024-1737
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Language English Summary Language Original Title
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ISSN 0042-6822 ISBN Medium
Area Expedition Conference
Notes PMID:7975212 Approved no
Call Number Equine Behaviour @ team @ Serial 2662
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Author Heyes CM
Title (up) Reflections on self-recognition in primates Type Journal Article
Year 1994 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.
Volume 47 Issue Pages 909
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 3005
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Author Judge, P.G.; de Waal, F.B.; Paul, K.S.; Gordon, T.P.
Title (up) Removal of a trauma-inflicting alpha matriline from a group of rhesus macaques to control severe wounding Type Journal Article
Year 1994 Publication Laboratory animal science Abbreviated Journal Lab Anim Sci
Volume 44 Issue 4 Pages 344-350
Keywords *Aggression; Animals; Female; *Macaca mulatta; Male; *Monkey Diseases; *Social Dominance; Wounds and Injuries/epidemiology/prevention & control/*veterinary
Abstract Wounding in an 83-member group of rhesus macaques (Macaca mulatta) housed at the Yerkes Regional Primate Research Center Field Station became excessive to the point that intervention was deemed necessary. When observations indicated that three females from the group's alpha matriline were principally responsible for the wounding, the matriline (N = 7) was removed from the group. This study was conducted to document an atypical pattern of wounding in this group and to evaluate the effectiveness of removal as a procedure for controlling injuries. The aggression rates of 21 adult subjects and the wounds of all group members were recorded before and after the removal procedure and compared with those in a similar-sized group. Removing the alpha matriline did not alter aggression rates in the group or the rank order among the remaining matrilines. Aggression rates in the experimental group were also not significantly different from those in the comparison group before or after the removal. With the alpha matriline present, wounding levels in the group were significantly higher than those in the comparison group. After removal of the matriline, the frequency of wounds decreased significantly to levels similar to those of the comparison group. The pattern of excess wounding attributed to the extracted alpha females was idiosyncratic, involving removal of large patches of skin from the hindquarters of adult females or removal of the distal portion of the fingers, toes, or tail from juveniles.(ABSTRACT TRUNCATED AT 250 WORDS)
Address Yerkes Regional Primate Research Center, Emory University, Atlanta, GA 30329
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Language English Summary Language Original Title
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Series Volume Series Issue Edition
ISSN 0023-6764 ISBN Medium
Area Expedition Conference
Notes PMID:7983846 Approved no
Call Number refbase @ user @ Serial 207
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