Contacts of the helix formed by residues 434 - 438 (chain B) in PDB entry 4QQ4
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 TYR 434 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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418A LYS* 5.6 2.3 + - - -
446A CYS* 4.0 18.5 + - + -
447A GLU* 3.9 33.7 - - + -
2004A CL 3.9 14.4 - - + -
413B CYS* 3.7 3.8 - - - -
414B ASP* 4.2 3.8 - - + -
415B ALA* 3.9 24.9 - - + -
432B LYS* 3.1 44.8 - - + +
433B TRP* 1.3 90.2 - - - +
435B CYS* 1.3 67.8 + - - +
436B SER* 4.0 5.2 - - - +
437B ASN* 2.8 36.2 + - - +
2002B UNX 3.7 24.4 + - - -
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Residues in contact with CYS 435 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2004A CL 4.1 2.9 - - + +
413B CYS* 3.4 13.0 - - - -
416B CYS* 3.8 1.3 - - - -
420B ARG* 3.3 37.9 - - - -
433B TRP* 3.7 9.5 - - - -
434B TYR* 1.3 72.7 - - - +
436B SER* 1.3 56.5 + - - +
438B ASN* 2.9 21.0 + - - +
443B PHE 4.1 2.9 - - - +
444B ARG* 3.2 17.1 - - - -
445B ASN* 3.5 25.1 - - - +
446B CYS 3.8 0.4 - - - +
2001B ZN 2.4 34.5 - - - -
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Residues in contact with SER 436 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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445A ASN* 3.5 31.2 + - - +
447A GLU* 5.1 3.3 + - - -
2004A CL 3.6 20.1 - - - +
434B TYR* 3.0 5.3 + - - -
435B CYS* 1.3 77.3 - - - +
437B ASN* 1.3 62.6 + - - +
438B ASN 3.4 0.2 - - - -
444B ARG* 3.3 32.1 + - - +
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Residues in contact with ASN 437 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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447A GLU* 2.9 26.9 + - - +
426B MET* 5.9 0.2 - - - +
430B PRO* 5.2 5.0 - - + +
432B LYS 4.5 2.1 - - - +
433B TRP* 3.7 26.0 + - + +
434B TYR* 2.8 41.7 + - - +
436B SER* 1.3 77.9 + - - +
438B ASN* 1.3 64.3 + - - +
439B PRO* 3.3 8.1 - - - +
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Residues in contact with ASN 438 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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420B ARG* 3.7 21.2 - - - +
421B LYS 4.1 11.8 + - - +
422B LEU* 4.2 0.3 - - - +
423B PRO* 5.8 0.5 - - - +
433B TRP* 3.7 15.2 - - + -
435B CYS 2.9 17.3 + - - +
436B SER 3.4 1.0 - - - -
437B ASN* 1.3 75.9 - - - +
439B PRO* 1.3 73.2 - - - +
440B ASP* 3.0 31.6 + - - +
443B PHE* 2.9 37.0 + - - +
444B ARG* 2.8 30.8 + - - -
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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