Contacts of the helix formed by residues 367 - 371 (chain E) in PDB entry 1MKD
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 367 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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363E ASP 3.5 12.2 + - - +
364E ILE 2.9 13.3 + - - +
366E LEU* 1.3 77.8 - - - +
368E THR* 1.3 58.7 + - - +
369E ASP 3.1 12.3 + - - +
372E LYS* 4.7 8.6 - - - +
376E LEU* 3.6 31.7 - - + +
408E GLN* 3.7 26.5 - - + +
412E HIS* 3.9 8.2 + - - -
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Residues in contact with THR 368 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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297E HIS* 4.3 16.9 + - + -
327E GLU* 3.6 8.4 - - - +
364E ILE 3.7 10.3 - - - +
365E VAL* 2.6 31.4 + - - +
367E ALA* 1.3 77.3 - - - +
369E ASP* 1.3 64.3 + - - +
370E MET* 3.2 9.0 + - - +
408E GLN 6.1 0.4 - - - +
411E VAL* 4.3 24.7 - - + +
412E HIS* 4.5 12.5 + - - +
415E ASP* 4.1 23.4 - - + +
2010E MG 3.6 14.4 - - - -
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Residues in contact with ASP 369 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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306E ASN* 4.0 10.8 + - - -
324E SER* 2.7 31.4 + - - +
327E GLU* 3.6 28.3 - - + +
366E LEU 3.5 16.2 + - - +
367E ALA 3.1 4.4 - - - +
368E THR* 1.3 79.4 + - - +
370E MET* 1.3 67.4 + - - +
371E SER* 3.0 29.3 + - - -
372E LYS* 3.0 23.6 + - + +
373E HIS* 3.9 1.9 + - - -
412E HIS* 5.2 0.9 - - - -
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Residues in contact with MET 370 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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327E GLU* 4.7 1.2 + - - -
368E THR 3.2 9.2 + - - +
369E ASP* 1.3 74.0 + - - +
371E SER* 1.3 56.5 + - - +
372E LYS 3.0 5.3 + - - -
373E HIS* 3.1 28.8 + - + +
412E HIS* 3.8 24.5 - - - -
416E LEU* 4.0 18.8 - - + -
469E PHE* 5.4 3.1 - - + -
473E ILE* 3.8 35.2 - - + -
3005E ZAR 3.3 41.5 - - + +
391J SER* 5.3 21.6 - - - +
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Residues in contact with SER 371 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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369E ASP* 3.0 24.8 + - - -
370E MET* 1.3 77.0 - - - +
372E LYS* 1.3 65.6 + - - +
373E HIS 3.4 0.4 - - - -
374E MET* 5.1 3.0 + - - +
375E ASN* 4.6 7.3 + - - -
389J VAL 5.4 6.1 - - - +
391J SER* 6.1 4.0 - - - +
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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