Contacts of the strand formed by residues 434 - 437 (chain A) in PDB entry 3CKM
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with ALA 434 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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373A MSE 3.8 8.1 - - + -
378A VAL* 3.6 41.0 - - + +
381A PRO* 3.8 2.5 - - - +
382A LEU* 3.0 27.1 + - - +
432A THR* 3.9 3.5 - - - +
433A THR* 1.3 83.7 + - - +
435A LEU* 1.3 61.0 + - - +
458A LEU* 3.5 6.6 - - - +
459A ALA* 3.1 17.5 - - + +
461A TYR* 4.4 0.4 - - + -
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Residues in contact with LEU 435 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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373A MSE 3.7 4.7 - - - -
382A LEU* 3.2 32.8 - - + +
384A ALA* 3.8 21.5 - - + -
421A VAL* 4.0 9.2 - - + -
434A ALA* 1.3 75.1 - - - +
436A TYR* 1.3 70.3 + - - +
437A ALA* 4.2 12.8 - - + +
444A LEU* 5.5 1.3 - - + -
447A MSE 5.0 4.3 - - + -
451A LEU* 3.9 27.6 - - + -
458A LEU* 3.9 19.1 - - + -
459A ALA 2.9 7.2 + - - +
460A ILE* 4.4 14.1 - - + -
461A TYR* 2.8 34.8 + - - +
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Residues in contact with TYR 436 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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362A PRO 4.8 1.0 + - - -
365A GLU* 3.8 3.7 + - - +
366A ALA* 3.6 37.8 + - + +
369A ALA* 3.4 24.9 - - + -
373A MSE 3.7 17.1 - - + +
382A LEU 2.8 8.9 + - - +
383A VAL* 3.4 7.4 - - + -
384A ALA 2.8 27.0 + - - +
385A MSE 3.8 15.0 - - + -
398A PHE* 3.6 21.3 - + + -
435A LEU* 1.3 73.5 - - - +
437A ALA* 1.3 59.9 + - - +
438A VAL* 3.8 20.7 - - + +
461A TYR* 3.3 17.7 - - + -
462A ALA* 3.8 25.1 - - - -
463A SER* 3.7 18.8 - - - -
487A SER* 5.0 0.6 + - - -
562A TRP* 4.9 0.7 - + - -
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Residues in contact with ALA 437 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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384A ALA* 3.5 9.0 - - + +
435A LEU* 4.0 15.0 - - + -
436A TYR* 1.3 75.3 - - - +
438A VAL* 1.3 65.5 + - - +
439A ALA 4.0 1.3 + - - -
444A LEU* 4.0 16.8 - - + +
447A MSE 3.9 28.3 - - + -
461A TYR 3.0 8.3 + - - +
462A ALA* 3.3 27.4 - - - +
463A SER 3.8 2.3 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il