structure and interpretation of computer programs pdf python

Ngày tải lên: 05/04/2014, 01:31

Ngày tải lên: 13/08/2014, 16:20

... A (1979) Involvement of histone H1 in the organization of the nucleosome and of the salt-dependent superstructures of chromatin. J Cell Biol 83, 403–427. Active chromatin and DNase I hypersensitive ... with binding of both MOF and Tip60 (equivalent to Esa1 in yeast NuA4) [124,130]. However, in human cells depletion of MOF, but not Tip60, results in reduced global levels of AcH4-K16 and defective ... acetylation and deacetyla- tion, and transient recruitment of remodellers and transcription factors. A cycle of transcription commences with the recruit- ment of transcription factors and co-factors...

Ngày tải lên: 14/02/2014, 18:20

... to T hr49) and TmAFP (blue, residues Asn29fiGly41). Letters de note the five residues of on e of the three sides of s bwAFP o r s ix residues of on e of two sides of T mAFP. T he strands that make ... Overlap of X-ray structure with 5 °C NMR structure using the main chain of residues Ser12 fiThr70 in t he structure a lignment. (B) O verlap of the X-ray structure with the 30 °C NMR structure ... [31,32,36] and their three- dimensional structures were determined [34,37–40]. In subsequent sections, we describe the structure and dynamics of each protein, and present a comparison of s bwAFP and TmAFPwitheachotherandwithproteinsthathavea similar...

Ngày tải lên: 19/02/2014, 16:20

... model of the role of point of view in problem solving. SUMMARY We have reported here a three pronged approach to the study of problem solving action and report: I) the collected of data ... of data on problem solving and talk about problem solving, 2) development of a process model of these behaviors, and 3) use of coding techniques to extract traces of "critical phenomena" ... efforts on two types of problem solving phenomena: the changes in the problem solver's organization of the problem ("point of view"), and systematic multl-utterance structures used...

Ngày tải lên: 21/02/2014, 20:20

... minidomain and the zinc-binding domain of the zinc finger protein Ynr046w [25] (Fig. 8). The fit of the heavy atoms (Ca, C, and N) from three b-strands and the a-helices of both the closed and the open ... TA, Gargaro AR & Feeney J (1999) Structure and dynamics in solution of the complex of Lactobacillus casei dihydrofolate reduc- NMR structure and function of the eRF1 C-domain A. B. Mantsyzov ... variation of pH in the range between 6.3 and 7.7, of ionic strength between 25 and 100 mm NaCl and of temperature between 278 and 313 K did not lead to any detectable change in the populations of the...

Ngày tải lên: 06/03/2014, 11:20

... helices A V and B V at the surface of domain V. Gly621 and Gly617 are in the area of contact with the 1095 and 2473 regions of 23S RNA. The two helices are facing the ribosome, and the four-stranded ... 666 and 670, within one b-strand of domain V, are also important for interdomain interac- tions. The N-terminal part of the strand interacts with the N-terminal part of helix C G in domain G, and ... occupancy of GDP in the nucleotide-binding site. Therefore, we present here the apo structure of S. aureus EF-G. Overall structure and comparison with previous EF-G structures All five domains of S....

Ngày tải lên: 06/03/2014, 22:21

... hypotheses and providing proof of concept and statistical evidence for many of them. Over the next few years, it will become essential to investigate more of the details of the field, and establish ... and sequence, and this controls the topology of the final structures and is related to the direction of the G-rich strands making up the core. Loops may link positions on the top (or bottom) of the ... hybrid, with three strands in one direction and one in the other, and a mixture of loop types [14]. Which of these struc- tures is preferred depends on the sequence and length of the loops – in general,...

Ngày tải lên: 23/03/2014, 03:20

... surface potential of AFP (left) and PAF (right) structures representing the orientation of the side chain lysine resi- dues. Lys9, Lys35 and Lys38 of PAF and Lys9, Lys32 and Arg35 of AFP are the ... of the adjacent Lys9 and Lys39. Similarly, Asp23 stabilizes the juxtaposed Lys15 and Lys17 side chains. The hydrophobic strand b4 is located between Cys43 and Asp46 and, as a central strand of ... [14]. The 3D molecular structure of PAF consists of five b-strands connected by three small loops involving b-turn motifs (loops 1, 2 and 4) and the large loop 3 (Fig. 9). The b-strands create two orthogonally...

Ngày tải lên: 29/03/2014, 23:20

Ngày tải lên: 30/03/2014, 10:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 07/08/2014, 03:22

Ngày tải lên: 07/08/2014, 10:21

Ngày tải lên: 11/08/2014, 05:21

Ngày tải lên: 14/08/2014, 10:22

Ngày tải lên: 14/08/2014, 10:22

Ngày tải lên: 14/08/2014, 16:21

Ngày tải lên: 12/12/2013, 00:15

... different object in the same piece of memory. Either way, the outcome of using dangling reference would be undefined. All bets would be off. ã You'd try and destroy the same object more ... runs in its own thread and can execute only at certain times (typically when your application reaches the end of a method). While it runs, other The Life and Times of an Object First, let's ... tremendously useful and free you, the programmer, from tedious housekeeping chores that are easy to get wrong. They allow you to concentrate on the logic of the program itself and be more productive....

Ngày tải lên: 15/12/2013, 00:15

... many lower priced computers. By the end of the 1980s most universities were making use of Unix computers in computer science and engineering programs. This created a wealth of graduates who ... directories called ’.profile’ or ’.login’. These are used when a user logs. Some of the standard Linux commands for files and directories are listed below. Most of the file and directory names ... computers Development - software authoring 2.1.5 Advantages and Disadvantages A partial list of advantages and disadvantages is given below. The cost, stability and open nature of the system have...

Ngày tải lên: 22/12/2013, 20:17